cost-model/pkg/kubecost/allocation_test.go

package kubecost

import (
	"encoding/json"
	"fmt"
	"math"
	"testing"
	"time"

	"github.com/kubecost/cost-model/pkg/util"
)

func TestAllocation_Add(t *testing.T) {
	var nilAlloc *Allocation
	zeroAlloc := &Allocation{}

	// nil + nil == nil
	nilNilSum, err := nilAlloc.Add(nilAlloc)
	if err != nil {
		t.Fatalf("Allocation.Add unexpected error: %s", err)
	}
	if nilNilSum != nil {
		t.Fatalf("Allocation.Add failed; exp: nil; act: %s", nilNilSum)
	}

	// nil + zero == zero
	nilZeroSum, err := nilAlloc.Add(zeroAlloc)
	if err != nil {
		t.Fatalf("Allocation.Add unexpected error: %s", err)
	}
	if nilZeroSum == nil || nilZeroSum.TotalCost() != 0.0 {
		t.Fatalf("Allocation.Add failed; exp: 0.0; act: %s", nilZeroSum)
	}

	cpuPrice := 0.02
	gpuPrice := 2.00
	ramPrice := 0.01
	pvPrice := 0.00005
	gib := 1024.0 * 1024.0 * 1024.0

	s1 := time.Date(2021, time.January, 1, 0, 0, 0, 0, time.UTC)
	e1 := time.Date(2021, time.January, 1, 12, 0, 0, 0, time.UTC)
	hrs1 := e1.Sub(s1).Hours()
	a1 := &Allocation{
		Start:                 s1,
		End:                   e1,
		Properties:            &AllocationProperties{},
		CPUCoreHours:          2.0 * hrs1,
		CPUCoreRequestAverage: 2.0,
		CPUCoreUsageAverage:   1.0,
		CPUCost:               2.0 * hrs1 * cpuPrice,
		CPUCostAdjustment:     3.0,
		GPUHours:              1.0 * hrs1,
		GPUCost:               1.0 * hrs1 * gpuPrice,
		GPUCostAdjustment:     2.0,
		PVs: PVAllocations{
			disk: {
				ByteHours: 100.0 * gib * hrs1,
				Cost:      100.0 * hrs1 * pvPrice,
			},
		},
		PVCostAdjustment:       4.0,
		RAMByteHours:           8.0 * gib * hrs1,
		RAMBytesRequestAverage: 8.0 * gib,
		RAMBytesUsageAverage:   4.0 * gib,
		RAMCost:                8.0 * hrs1 * ramPrice,
		RAMCostAdjustment:      1.0,
		SharedCost:             2.00,
		ExternalCost:           1.00,
		RawAllocationOnly:      &RawAllocationOnlyData{},
	}
	a1b := a1.Clone()

	s2 := time.Date(2021, time.January, 1, 6, 0, 0, 0, time.UTC)
	e2 := time.Date(2021, time.January, 1, 24, 0, 0, 0, time.UTC)
	hrs2 := e1.Sub(s1).Hours()
	a2 := &Allocation{
		Start:                  s2,
		End:                    e2,
		Properties:             &AllocationProperties{},
		CPUCoreHours:           1.0 * hrs2,
		CPUCoreRequestAverage:  1.0,
		CPUCoreUsageAverage:    1.0,
		CPUCost:                1.0 * hrs2 * cpuPrice,
		GPUHours:               0.0,
		GPUCost:                0.0,
		RAMByteHours:           8.0 * gib * hrs2,
		RAMBytesRequestAverage: 0.0,
		RAMBytesUsageAverage:   8.0 * gib,
		RAMCost:                8.0 * hrs2 * ramPrice,
		NetworkCost:            0.01,
		LoadBalancerCost:       0.05,
		SharedCost:             0.00,
		ExternalCost:           1.00,
		RawAllocationOnly:      &RawAllocationOnlyData{},
	}
	a2b := a2.Clone()

	act, err := a1.Add(a2)
	if err != nil {
		t.Fatalf("Allocation.Add: unexpected error: %s", err)
	}

	// Neither Allocation should be mutated
	if !a1.Equal(a1b) {
		t.Fatalf("Allocation.Add: a1 illegally mutated")
	}
	if !a2.Equal(a2b) {
		t.Fatalf("Allocation.Add: a1 illegally mutated")
	}

	// Costs should be cumulative
	if !util.IsApproximately(a1.TotalCost()+a2.TotalCost(), act.TotalCost()) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.TotalCost()+a2.TotalCost(), act.TotalCost())
	}
	if !util.IsApproximately(a1.CPUCost+a2.CPUCost, act.CPUCost) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.CPUCost+a2.CPUCost, act.CPUCost)
	}
	if !util.IsApproximately(a1.CPUCostAdjustment+a2.CPUCostAdjustment, act.CPUCostAdjustment) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.CPUCostAdjustment+a2.CPUCostAdjustment, act.CPUCostAdjustment)
	}
	if !util.IsApproximately(a1.GPUCost+a2.GPUCost, act.GPUCost) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.GPUCost+a2.GPUCost, act.GPUCost)
	}
	if !util.IsApproximately(a1.GPUCostAdjustment+a2.GPUCostAdjustment, act.GPUCostAdjustment) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.GPUCostAdjustment+a2.GPUCostAdjustment, act.GPUCostAdjustment)
	}
	if !util.IsApproximately(a1.RAMCost+a2.RAMCost, act.RAMCost) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.RAMCost+a2.RAMCost, act.RAMCost)
	}
	if !util.IsApproximately(a1.RAMCostAdjustment+a2.RAMCostAdjustment, act.RAMCostAdjustment) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.RAMCostAdjustment+a2.RAMCostAdjustment, act.RAMCostAdjustment)
	}
	if !util.IsApproximately(a1.PVCost()+a2.PVCost(), act.PVCost()) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.PVCost()+a2.PVCost(), act.PVCost())
	}
	if !util.IsApproximately(a1.NetworkCost+a2.NetworkCost, act.NetworkCost) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.NetworkCost+a2.NetworkCost, act.NetworkCost)
	}
	if !util.IsApproximately(a1.LoadBalancerCost+a2.LoadBalancerCost, act.LoadBalancerCost) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.LoadBalancerCost+a2.LoadBalancerCost, act.LoadBalancerCost)
	}
	if !util.IsApproximately(a1.SharedCost+a2.SharedCost, act.SharedCost) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.SharedCost+a2.SharedCost, act.SharedCost)
	}
	if !util.IsApproximately(a1.ExternalCost+a2.ExternalCost, act.ExternalCost) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.ExternalCost+a2.ExternalCost, act.ExternalCost)
	}

	// ResourceHours should be cumulative
	if !util.IsApproximately(a1.CPUCoreHours+a2.CPUCoreHours, act.CPUCoreHours) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.CPUCoreHours+a2.CPUCoreHours, act.CPUCoreHours)
	}
	if !util.IsApproximately(a1.RAMByteHours+a2.RAMByteHours, act.RAMByteHours) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.RAMByteHours+a2.RAMByteHours, act.RAMByteHours)
	}
	if !util.IsApproximately(a1.PVByteHours()+a2.PVByteHours(), act.PVByteHours()) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", a1.PVByteHours()+a2.PVByteHours(), act.PVByteHours())
	}

	// Minutes should be the duration between min(starts) and max(ends)
	if !act.Start.Equal(a1.Start) || !act.End.Equal(a2.End) {
		t.Fatalf("Allocation.Add: expected %s; actual %s", NewWindow(&a1.Start, &a2.End), NewWindow(&act.Start, &act.End))
	}
	if act.Minutes() != 1440.0 {
		t.Fatalf("Allocation.Add: expected %f; actual %f", 1440.0, act.Minutes())
	}

	// Requests and Usage should be averaged correctly
	// CPU requests = (2.0*12.0 + 1.0*18.0)/(24.0) = 1.75
	// CPU usage = (1.0*12.0 + 1.0*18.0)/(24.0) = 1.25
	// RAM requests = (8.0*12.0 + 0.0*18.0)/(24.0) = 4.00
	// RAM usage = (4.0*12.0 + 8.0*18.0)/(24.0) = 8.00
	if !util.IsApproximately(1.75, act.CPUCoreRequestAverage) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", 1.75, act.CPUCoreRequestAverage)
	}
	if !util.IsApproximately(1.25, act.CPUCoreUsageAverage) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", 1.25, act.CPUCoreUsageAverage)
	}
	if !util.IsApproximately(4.00*gib, act.RAMBytesRequestAverage) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", 4.00*gib, act.RAMBytesRequestAverage)
	}
	if !util.IsApproximately(8.00*gib, act.RAMBytesUsageAverage) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", 8.00*gib, act.RAMBytesUsageAverage)
	}

	// Efficiency should be computed accurately from new request/usage
	// CPU efficiency = 1.25/1.75 = 0.7142857
	// RAM efficiency = 8.00/4.00 = 2.0000000
	// Total efficiency = (0.7142857*0.72 + 2.0*1.92)/(2.64) = 1.6493506
	if !util.IsApproximately(0.7142857, act.CPUEfficiency()) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", 0.7142857, act.CPUEfficiency())
	}
	if !util.IsApproximately(2.0000000, act.RAMEfficiency()) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", 2.0000000, act.RAMEfficiency())
	}
	if !util.IsApproximately(1.279690, act.TotalEfficiency()) {
		t.Fatalf("Allocation.Add: expected %f; actual %f", 1.279690, act.TotalEfficiency())
	}

	if act.RawAllocationOnly != nil {
		t.Errorf("Allocation.Add: Raw only data must be nil after an add")
	}
}

func TestAllocation_Share(t *testing.T) {
	cpuPrice := 0.02
	gpuPrice := 2.00
	ramPrice := 0.01
	pvPrice := 0.00005
	gib := 1024.0 * 1024.0 * 1024.0

	s1 := time.Date(2021, time.January, 1, 0, 0, 0, 0, time.UTC)
	e1 := time.Date(2021, time.January, 1, 12, 0, 0, 0, time.UTC)
	hrs1 := e1.Sub(s1).Hours()
	a1 := &Allocation{
		Start:                 s1,
		End:                   e1,
		Properties:            &AllocationProperties{},
		CPUCoreHours:          2.0 * hrs1,
		CPUCoreRequestAverage: 2.0,
		CPUCoreUsageAverage:   1.0,
		CPUCost:               2.0 * hrs1 * cpuPrice,
		CPUCostAdjustment:     3.0,
		GPUHours:              1.0 * hrs1,
		GPUCost:               1.0 * hrs1 * gpuPrice,
		GPUCostAdjustment:     2.0,
		PVs: PVAllocations{
			disk: {
				ByteHours: 100.0 * gib * hrs1,
				Cost:      100.0 * hrs1 * pvPrice,
			},
		},
		PVCostAdjustment:       4.0,
		RAMByteHours:           8.0 * gib * hrs1,
		RAMBytesRequestAverage: 8.0 * gib,
		RAMBytesUsageAverage:   4.0 * gib,
		RAMCost:                8.0 * hrs1 * ramPrice,
		RAMCostAdjustment:      1.0,
		SharedCost:             2.00,
		ExternalCost:           1.00,
	}
	a1b := a1.Clone()

	s2 := time.Date(2021, time.January, 1, 6, 0, 0, 0, time.UTC)
	e2 := time.Date(2021, time.January, 1, 24, 0, 0, 0, time.UTC)
	hrs2 := e1.Sub(s1).Hours()
	a2 := &Allocation{
		Start:                  s2,
		End:                    e2,
		Properties:             &AllocationProperties{},
		CPUCoreHours:           1.0 * hrs2,
		CPUCoreRequestAverage:  1.0,
		CPUCoreUsageAverage:    1.0,
		CPUCost:                1.0 * hrs2 * cpuPrice,
		GPUHours:               0.0,
		GPUCost:                0.0,
		RAMByteHours:           8.0 * gib * hrs2,
		RAMBytesRequestAverage: 0.0,
		RAMBytesUsageAverage:   8.0 * gib,
		RAMCost:                8.0 * hrs2 * ramPrice,
		NetworkCost:            0.01,
		LoadBalancerCost:       0.05,
		SharedCost:             0.00,
		ExternalCost:           1.00,
	}
	a2b := a2.Clone()

	act, err := a1.Share(a2)
	if err != nil {
		t.Fatalf("Allocation.Share: unexpected error: %s", err)
	}

	// Neither Allocation should be mutated
	if !a1.Equal(a1b) {
		t.Fatalf("Allocation.Share: a1 illegally mutated")
	}
	if !a2.Equal(a2b) {
		t.Fatalf("Allocation.Share: a1 illegally mutated")
	}

	// SharedCost and TotalCost should reflect increase by a2.TotalCost
	if !util.IsApproximately(a1.TotalCost()+a2.TotalCost(), act.TotalCost()) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.TotalCost()+a2.TotalCost(), act.TotalCost())
	}
	if !util.IsApproximately(a1.SharedCost+a2.TotalCost(), act.SharedCost) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.SharedCost+a2.TotalCost(), act.SharedCost)
	}

	// Costs should match before (expect TotalCost and SharedCost)
	if !util.IsApproximately(a1.CPUTotalCost(), act.CPUTotalCost()) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.CPUTotalCost(), act.CPUTotalCost())
	}
	if !util.IsApproximately(a1.GPUTotalCost(), act.GPUTotalCost()) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.GPUTotalCost(), act.GPUTotalCost())
	}
	if !util.IsApproximately(a1.RAMTotalCost(), act.RAMTotalCost()) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.RAMTotalCost(), act.RAMTotalCost())
	}
	if !util.IsApproximately(a1.PVTotalCost(), act.PVTotalCost()) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.PVTotalCost(), act.PVTotalCost())
	}
	if !util.IsApproximately(a1.NetworkCost, act.NetworkCost) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.NetworkCost, act.NetworkCost)
	}
	if !util.IsApproximately(a1.LoadBalancerCost, act.LoadBalancerCost) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.LoadBalancerCost, act.LoadBalancerCost)
	}
	if !util.IsApproximately(a1.ExternalCost, act.ExternalCost) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.ExternalCost, act.ExternalCost)
	}

	// ResourceHours should match before
	if !util.IsApproximately(a1.CPUCoreHours, act.CPUCoreHours) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.CPUCoreHours, act.CPUCoreHours)
	}
	if !util.IsApproximately(a1.RAMByteHours, act.RAMByteHours) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.RAMByteHours, act.RAMByteHours)
	}
	if !util.IsApproximately(a1.PVByteHours(), act.PVByteHours()) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.PVByteHours(), act.PVByteHours())
	}

	// Minutes should match before
	if !act.Start.Equal(a1.Start) || !act.End.Equal(a1.End) {
		t.Fatalf("Allocation.Share: expected %s; actual %s", NewWindow(&a1.Start, &a1.End), NewWindow(&act.Start, &act.End))
	}
	if act.Minutes() != a1.Minutes() {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.Minutes(), act.Minutes())
	}

	// Requests and Usage should match before
	if !util.IsApproximately(a1.CPUCoreRequestAverage, act.CPUCoreRequestAverage) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.CPUCoreRequestAverage, act.CPUCoreRequestAverage)
	}
	if !util.IsApproximately(a1.CPUCoreUsageAverage, act.CPUCoreUsageAverage) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.CPUCoreUsageAverage, act.CPUCoreUsageAverage)
	}
	if !util.IsApproximately(a1.RAMBytesRequestAverage, act.RAMBytesRequestAverage) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.RAMBytesRequestAverage, act.RAMBytesRequestAverage)
	}
	if !util.IsApproximately(a1.RAMBytesUsageAverage, act.RAMBytesUsageAverage) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.RAMBytesUsageAverage, act.RAMBytesUsageAverage)
	}

	// Efficiency should match before
	if !util.IsApproximately(a1.CPUEfficiency(), act.CPUEfficiency()) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.CPUEfficiency(), act.CPUEfficiency())
	}
	if !util.IsApproximately(a1.RAMEfficiency(), act.RAMEfficiency()) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.RAMEfficiency(), act.RAMEfficiency())
	}
	if !util.IsApproximately(a1.TotalEfficiency(), act.TotalEfficiency()) {
		t.Fatalf("Allocation.Share: expected %f; actual %f", a1.TotalEfficiency(), act.TotalEfficiency())
	}
}

func TestAllocation_AddDifferentController(t *testing.T) {
	a1 := &Allocation{
		Properties: &AllocationProperties{
			Container:  "container",
			Pod:        "pod",
			Namespace:  "ns",
			Cluster:    "cluster",
			Controller: "controller 1",
		},
	}
	a2 := a1.Clone()
	a2.Properties.Controller = "controller 2"

	result, err := a1.Add(a2)
	if err != nil {
		t.Fatalf("Allocation.Add: unexpected error: %s", err)
	}

	if result.Properties.Controller == "" {
		t.Errorf("Adding allocations whose properties only differ in controller name should not result in an empty string controller name.")
	}

}

func TestAllocation_MarshalJSON(t *testing.T) {
	start := time.Date(2021, time.January, 1, 0, 0, 0, 0, time.UTC)
	end := time.Date(2021, time.January, 2, 0, 0, 0, 0, time.UTC)
	hrs := 24.0

	gib := 1024.0 * 1024.0 * 1024.0

	cpuPrice := 0.02
	gpuPrice := 2.00
	ramPrice := 0.01
	pvPrice := 0.00005

	before := &Allocation{
		Name: "cluster1/namespace1/node1/pod1/container1",
		Properties: &AllocationProperties{
			Cluster:   "cluster1",
			Node:      "node1",
			Namespace: "namespace1",
			Pod:       "pod1",
			Container: "container1",
		},
		Window:                NewWindow(&start, &end),
		Start:                 start,
		End:                   end,
		CPUCoreHours:          2.0 * hrs,
		CPUCoreRequestAverage: 2.0,
		CPUCoreUsageAverage:   1.0,
		CPUCost:               2.0 * hrs * cpuPrice,
		CPUCostAdjustment:     3.0,
		GPUHours:              1.0 * hrs,
		GPUCost:               1.0 * hrs * gpuPrice,
		GPUCostAdjustment:     2.0,
		NetworkCost:           0.05,
		LoadBalancerCost:      0.02,
		PVs: PVAllocations{
			disk: {
				ByteHours: 100.0 * gib * hrs,
				Cost:      100.0 * hrs * pvPrice,
			},
		},
		PVCostAdjustment:       4.0,
		RAMByteHours:           8.0 * gib * hrs,
		RAMBytesRequestAverage: 8.0 * gib,
		RAMBytesUsageAverage:   4.0 * gib,
		RAMCost:                8.0 * hrs * ramPrice,
		RAMCostAdjustment:      1.0,
		SharedCost:             2.00,
		ExternalCost:           1.00,
		RawAllocationOnly:      &RawAllocationOnlyData{},
	}

	data, err := json.Marshal(before)
	if err != nil {
		t.Fatalf("Allocation.MarshalJSON: unexpected error: %s", err)
	}

	after := &Allocation{}
	err = json.Unmarshal(data, after)
	if err != nil {
		t.Fatalf("Allocation.UnmarshalJSON: unexpected error: %s", err)
	}

	// TODO:CLEANUP fix json marshaling of Window so that all of this works.
	// In the meantime, just set the Window so that we can test the rest.
	after.Window = before.Window.Clone()
	// TODO Sean: fix JSON marshaling of PVs
	after.PVs = before.PVs
	if !after.Equal(before) {
		t.Fatalf("Allocation.MarshalJSON: before and after are not equal")
	}
}

func TestAllocationSet_generateKey(t *testing.T) {
	var alloc *Allocation
	var key string

	props := []string{
		AllocationClusterProp,
	}

	key = alloc.generateKey(props, nil)
	if key != "" {
		t.Fatalf("generateKey: expected \"\"; actual \"%s\"", key)
	}

	alloc = &Allocation{}
	alloc.Properties = &AllocationProperties{
		Cluster: "cluster1",
		Labels: map[string]string{
			"app": "app1",
			"env": "env1",
		},
	}

	key = alloc.generateKey(props, nil)
	if key != "cluster1" {
		t.Fatalf("generateKey: expected \"cluster1\"; actual \"%s\"", key)
	}

	props = []string{
		AllocationClusterProp,
		AllocationNamespaceProp,
		"label:app",
	}

	key = alloc.generateKey(props, nil)
	if key != "cluster1//app=app1" {
		t.Fatalf("generateKey: expected \"cluster1//app=app1\"; actual \"%s\"", key)
	}

	alloc.Properties = &AllocationProperties{
		Cluster:   "cluster1",
		Namespace: "namespace1",
		Labels: map[string]string{
			"app": "app1",
			"env": "env1",
		},
	}
	key = alloc.generateKey(props, nil)
	if key != "cluster1/namespace1/app=app1" {
		t.Fatalf("generateKey: expected \"cluster1/namespace1/app=app1\"; actual \"%s\"", key)
	}

	props = []string{
		AllocationDepartmentProp,
		AllocationEnvironmentProp,
		AllocationOwnerProp,
		AllocationProductProp,
		AllocationTeamProp,
	}

	labelConfig := NewLabelConfig()

	alloc.Properties = &AllocationProperties{
		Cluster:   "cluster1",
		Namespace: "namespace1",
		Labels: map[string]string{
			labelConfig.DepartmentLabel:  "dept1",
			labelConfig.EnvironmentLabel: "envt1",
			labelConfig.OwnerLabel:       "ownr1",
			labelConfig.ProductLabel:     "prod1",
			labelConfig.TeamLabel:        "team1",
		},
	}
	key = alloc.generateKey(props, nil)
	if key != "dept1/envt1/ownr1/prod1/team1" {
		t.Fatalf("generateKey: expected \"dept1/envt1/ownr1/prod1/team1\"; actual \"%s\"", key)
	}

	// Ensure that labels with illegal Prometheus characters in LabelConfig
	// still match their sanitized values. Ensure also that multiple comma-
	// separated values work.

	labelConfig.DepartmentLabel = "prom/illegal-department"
	labelConfig.EnvironmentLabel = " env "
	labelConfig.OwnerLabel = "$owner%"
	labelConfig.ProductLabel = "app.kubernetes.io/app"
	labelConfig.TeamLabel = "team,app.kubernetes.io/team,k8s-team"

	alloc.Properties = &AllocationProperties{
		Cluster:   "cluster1",
		Namespace: "namespace1",
		Labels: map[string]string{
			"prom_illegal_department": "dept1",
			"env":                     "envt1",
			"_owner_":                 "ownr1",
			"team":                    "team1",
			"app_kubernetes_io_app":   "prod1",
			"app_kubernetes_io_team":  "team2",
		},
	}

	props = []string{
		AllocationDepartmentProp,
		AllocationEnvironmentProp,
		AllocationOwnerProp,
		AllocationProductProp,
		AllocationTeamProp,
	}

	key = alloc.generateKey(props, labelConfig)
	if key != "dept1/envt1/ownr1/prod1/team1/team2/__unallocated__" {
		t.Fatalf("generateKey: expected \"dept1/envt1/ownr1/prod1/team1/team2/__unallocated__\"; actual \"%s\"", key)
	}
}

func TestNewAllocationSet(t *testing.T) {
	// TODO niko/etl
}

func assertAllocationSetTotals(t *testing.T, as *AllocationSet, msg string, err error, length int, totalCost float64) {
	if err != nil {
		t.Fatalf("AllocationSet.AggregateBy[%s]: unexpected error: %s", msg, err)
	}
	if as.Length() != length {
		t.Fatalf("AllocationSet.AggregateBy[%s]: expected set of length %d, actual %d", msg, length, as.Length())
	}
	if math.Round(as.TotalCost()*100) != math.Round(totalCost*100) {
		t.Fatalf("AllocationSet.AggregateBy[%s]: expected total cost %.2f, actual %.2f", msg, totalCost, as.TotalCost())
	}
}

func assertAllocationTotals(t *testing.T, as *AllocationSet, msg string, exps map[string]float64) {
	as.Each(func(k string, a *Allocation) {
		if exp, ok := exps[a.Name]; ok {
			if math.Round(a.TotalCost()*100) != math.Round(exp*100) {
				t.Fatalf("AllocationSet.AggregateBy[%s]: expected total cost %f, actual %f", msg, exp, a.TotalCost())
			}
		} else {
			t.Fatalf("AllocationSet.AggregateBy[%s]: unexpected allocation: %s", msg, a.Name)
		}
	})
}

func assertAllocationWindow(t *testing.T, as *AllocationSet, msg string, expStart, expEnd time.Time, expMinutes float64) {
	as.Each(func(k string, a *Allocation) {
		if !a.Start.Equal(expStart) {
			t.Fatalf("AllocationSet.AggregateBy[%s]: expected start %s, actual %s", msg, expStart, a.Start)
		}
		if !a.End.Equal(expEnd) {
			t.Fatalf("AllocationSet.AggregateBy[%s]: expected end %s, actual %s", msg, expEnd, a.End)
		}
		if a.Minutes() != expMinutes {
			t.Fatalf("AllocationSet.AggregateBy[%s]: expected minutes %f, actual %f", msg, expMinutes, a.Minutes())
		}
	})
}

func printAllocationSet(msg string, as *AllocationSet) {
	fmt.Printf("--- %s ---\n", msg)
	as.Each(func(k string, a *Allocation) {
		fmt.Printf(" > %s\n", a)
	})
}

func TestAllocationSet_AggregateBy(t *testing.T) {
	// Test AggregateBy against the following workload topology, which is
	// generated by GenerateMockAllocationSet:

	// | Hierarchy                              | Cost |  CPU |  RAM |  GPU |   PV |  Net |  LB  |
	// +----------------------------------------+------+------+------+------+------+------+------+
	//   cluster1:
	//     idle:                                  20.00   5.00  15.00   0.00   0.00   0.00   0.00
	//     namespace1:
	//       pod1:
	//         container1: [app=app1, env=env1]   16.00   1.00  11.00   1.00   1.00   1.00   1.00
	//       pod-abc: (deployment1)
	//         container2:                         6.00   1.00   1.00   1.00   1.00   1.00   1.00
	//       pod-def: (deployment1)
	//         container3:                         6.00   1.00   1.00   1.00   1.00   1.00   1.00
	//     namespace2:
	//       pod-ghi: (deployment2)
	//         container4: [app=app2, env=env2]    6.00   1.00   1.00   1.00   1.00   1.00   1.00
	//         container5: [app=app2, env=env2]    6.00   1.00   1.00   1.00   1.00   1.00   1.00
	//       pod-jkl: (daemonset1)
	//         container6: {service1}              6.00   1.00   1.00   1.00   1.00   1.00   1.00
	// +-----------------------------------------+------+------+------+------+------+------+------+
	//   cluster1 subtotal                        66.00  11.00  31.00   6.00   6.00   6.00   6.00
	// +-----------------------------------------+------+------+------+------+------+------+------+
	//   cluster2:
	//     idle:                                  10.00   5.00   5.00   0.00   0.00   0.00   0.00
	//     namespace2:
	//       pod-mno: (deployment2)
	//         container4: [app=app2]              6.00   1.00   1.00   1.00   1.00   1.00   1.00
	//         container5: [app=app2]              6.00   1.00   1.00   1.00   1.00   1.00   1.00
	//       pod-pqr: (daemonset1)
	//         container6: {service1}              6.00   1.00   1.00   1.00   1.00   1.00   1.00
	//     namespace3:
	//       pod-stu: (deployment3)
	//         container7: an[team=team1]          6.00   1.00   1.00   1.00   1.00   1.00   1.00
	//       pod-vwx: (statefulset1)
	//         container8: an[team=team2]          6.00   1.00   1.00   1.00   1.00   1.00   1.00
	//         container9: an[team=team1]          6.00   1.00   1.00   1.00   1.00   1.00   1.00
	// +----------------------------------------+------+------+------+------+------+------+------+
	//   cluster2 subtotal                        46.00  11.00  11.00   6.00   6.00   6.00   6.00
	// +----------------------------------------+------+------+------+------+------+------+------+
	//   total                                   112.00  22.00  42.00  12.00  12.00  12.00  12.00
	// +----------------------------------------+------+------+------+------+------+------+------+

	// Scenarios to test:

	// 1  Single-aggregation
	// 1a AggregationProperties=(Cluster)
	// 1b AggregationProperties=(Namespace)
	// 1c AggregationProperties=(Pod)
	// 1d AggregationProperties=(Container)
	// 1e AggregationProperties=(ControllerKind)
	// 1f AggregationProperties=(Controller)
	// 1g AggregationProperties=(Service)
	// 1h AggregationProperties=(Label:app)

	// 2  Multi-aggregation
	// 2a AggregationProperties=(Cluster, Namespace)
	// 2b AggregationProperties=(Namespace, Label:app)
	// 2c AggregationProperties=(Cluster, Namespace, Pod, Container)
	// 2d AggregationProperties=(Label:app, Label:environment)

	// 3  Share idle
	// 3a AggregationProperties=(Namespace) ShareIdle=ShareWeighted
	// 3b AggregationProperties=(Namespace) ShareIdle=ShareEven (TODO niko/etl)

	// 4  Share resources
	// 4a Share namespace ShareEven
	// 4b Share cluster ShareWeighted
	// 4c Share label ShareEven
	// 4d Share overhead ShareWeighted

	// 5  Filters
	// 5a Filter by cluster with separate idle
	// 5b Filter by cluster with shared idle
	// TODO niko/idle more filter tests

	// 6  Combinations and options
	// 6a SplitIdle
	// 6b Share idle with filters
	// 6c Share resources with filters
	// 6d Share idle and share resources
	// 6e IdleByNode

	// 7  Edge cases and errors
	// 7a Empty AggregationProperties
	// 7b Filter all
	// 7c Share all
	// 7d Share and filter the same allocations

	// Definitions and set-up:

	var as *AllocationSet
	var err error

	endYesterday := time.Now().UTC().Truncate(day)
	startYesterday := endYesterday.Add(-day)

	numClusters := 2
	numNamespaces := 3
	numPods := 9
	numContainers := 9
	numControllerKinds := 3
	numControllers := 5
	numServices := 1
	numLabelApps := 2

	// By default, idle is reported as a single, merged allocation
	numIdle := 1
	// There will only ever be one __unallocated__
	numUnallocated := 1
	// There are two clusters, so each gets an idle entry when they are split
	numSplitIdleCluster := 2

	// There are two clusters, so each gets an idle entry when they are split
	numSplitIdleNode := 4

	activeTotalCost := 82.0
	idleTotalCost := 30.0
	sharedOverheadHourlyCost := 7.0

	// Match Functions
	isNamespace3 := func(a *Allocation) bool {
		ns := a.Properties.Namespace
		return ns == "namespace3"
	}

	isApp1 := func(a *Allocation) bool {
		ls := a.Properties.Labels
		if app, ok := ls["app"]; ok && app == "app1" {
			return true
		}
		return false
	}

	// Filters
	isCluster := func(matchCluster string) func(*Allocation) bool {
		return func(a *Allocation) bool {
			cluster := a.Properties.Cluster
			return cluster == matchCluster
		}
	}

	isNamespace := func(matchNamespace string) func(*Allocation) bool {
		return func(a *Allocation) bool {
			namespace := a.Properties.Namespace
			return namespace == matchNamespace
		}
	}

	end := time.Now().UTC().Truncate(day)
	start := end.Add(-day)

	// Tests:
	cases := map[string]struct {
		start       time.Time
		aggBy       []string
		aggOpts     *AllocationAggregationOptions
		numResults  int
		totalCost   float64
		results     map[string]float64
		windowStart time.Time
		windowEnd   time.Time
		expMinutes  float64
	}{
		// 1  Single-aggregation

		// 1a AggregationProperties=(Cluster)
		"1a": {
			start:      start,
			aggBy:      []string{AllocationClusterProp},
			aggOpts:    nil,
			numResults: numClusters + numIdle,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"cluster1": 46.00,
				"cluster2": 36.00,
				IdleSuffix: 30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1b AggregationProperties=(Namespace)
		"1b": {
			start:      start,
			aggBy:      []string{AllocationNamespaceProp},
			aggOpts:    nil,
			numResults: numNamespaces + numIdle,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace1": 28.00,
				"namespace2": 36.00,
				"namespace3": 18.00,
				IdleSuffix:   30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1c AggregationProperties=(Pod)
		"1c": {
			start:      start,
			aggBy:      []string{AllocationPodProp},
			aggOpts:    nil,
			numResults: numPods + numIdle,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"pod-jkl":  6.00,
				"pod-stu":  6.00,
				"pod-abc":  6.00,
				"pod-pqr":  6.00,
				"pod-def":  6.00,
				"pod-vwx":  12.00,
				"pod1":     16.00,
				"pod-mno":  12.00,
				"pod-ghi":  12.00,
				IdleSuffix: 30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1d AggregationProperties=(Container)
		"1d": {
			start:      start,
			aggBy:      []string{AllocationContainerProp},
			aggOpts:    nil,
			numResults: numContainers + numIdle,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"container2": 6.00,
				"container9": 6.00,
				"container6": 12.00,
				"container3": 6.00,
				"container4": 12.00,
				"container7": 6.00,
				"container8": 6.00,
				"container5": 12.00,
				"container1": 16.00,
				IdleSuffix:   30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1e AggregationProperties=(ControllerKind)
		"1e": {
			start:      start,
			aggBy:      []string{AllocationControllerKindProp},
			aggOpts:    nil,
			numResults: numControllerKinds + numIdle + numUnallocated,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"daemonset":       12.00,
				"deployment":      42.00,
				"statefulset":     12.00,
				IdleSuffix:        30.00,
				UnallocatedSuffix: 16.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1f AggregationProperties=(Controller)
		"1f": {
			start:      start,
			aggBy:      []string{AllocationControllerProp},
			aggOpts:    nil,
			numResults: numControllers + numIdle + numUnallocated,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"deployment:deployment2":   24.00,
				"daemonset:daemonset1":     12.00,
				"deployment:deployment3":   6.00,
				"statefulset:statefulset1": 12.00,
				"deployment:deployment1":   12.00,
				IdleSuffix:                 30.00,
				UnallocatedSuffix:          16.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1g AggregationProperties=(Service)
		"1g": {
			start:      start,
			aggBy:      []string{AllocationServiceProp},
			aggOpts:    nil,
			numResults: numServices + numIdle + numUnallocated,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"service1":        12.00,
				IdleSuffix:        30.00,
				UnallocatedSuffix: 70.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1h AggregationProperties=(Label:app)
		"1h": {
			start:      start,
			aggBy:      []string{"label:app"},
			aggOpts:    nil,
			numResults: numLabelApps + numIdle + numUnallocated,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"app=app1":        16.00,
				"app=app2":        24.00,
				IdleSuffix:        30.00,
				UnallocatedSuffix: 42.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1i AggregationProperties=(deployment)
		"1i": {
			start:      start,
			aggBy:      []string{AllocationDeploymentProp},
			aggOpts:    nil,
			numResults: 3 + numIdle + numUnallocated,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"deployment1":     12.00,
				"deployment2":     24.00,
				"deployment3":     6.00,
				IdleSuffix:        30.00,
				UnallocatedSuffix: 40.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1j AggregationProperties=(Annotation:team)
		"1j": {
			start:      start,
			aggBy:      []string{"annotation:team"},
			aggOpts:    nil,
			numResults: 2 + numIdle + numUnallocated,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"team=team1":      12.00,
				"team=team2":      6.00,
				IdleSuffix:        30.00,
				UnallocatedSuffix: 64.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1k AggregationProperties=(daemonSet)
		"1k": {
			start:      start,
			aggBy:      []string{AllocationDaemonSetProp},
			aggOpts:    nil,
			numResults: 1 + numIdle + numUnallocated,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"daemonset1":      12.00,
				IdleSuffix:        30.00,
				UnallocatedSuffix: 70.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 1l AggregationProperties=(statefulSet)
		"1l": {
			start:      start,
			aggBy:      []string{AllocationStatefulSetProp},
			aggOpts:    nil,
			numResults: 1 + numIdle + numUnallocated,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"statefulset1":    12.00,
				IdleSuffix:        30.00,
				UnallocatedSuffix: 70.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 2  Multi-aggregation

		// 2a AggregationProperties=(Cluster, Namespace)
		// 2b AggregationProperties=(Namespace, Label:app)
		// 2c AggregationProperties=(Cluster, Namespace, Pod, Container)
		// 2d AggregationProperties=(Label:app, Label:environment)
		"2d": {
			start:      start,
			aggBy:      []string{"label:app", "label:env"},
			aggOpts:    nil,
			numResults: 3 + numIdle + numUnallocated,
			totalCost:  activeTotalCost + idleTotalCost,
			// sets should be {idle, unallocated, app1/env1, app2/env2, app2/unallocated}
			results: map[string]float64{
				"app=app1/env=env1":                         16.00,
				"app=app2/env=env2":                         12.00,
				"app=app2/" + UnallocatedSuffix:             12.00,
				IdleSuffix:                                  30.00,
				UnallocatedSuffix + "/" + UnallocatedSuffix: 42.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 2e AggregationProperties=(Cluster, Label:app, Label:environment)
		"2e": {
			start:      start,
			aggBy:      []string{AllocationClusterProp, "label:app", "label:env"},
			aggOpts:    nil,
			numResults: 6,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"cluster1/app=app2/env=env2": 12.00,
				"__idle__":                   30.00,
				"cluster1/app=app1/env=env1": 16.00,
				"cluster1/" + UnallocatedSuffix + "/" + UnallocatedSuffix: 18.00,
				"cluster2/app=app2/" + UnallocatedSuffix:                  12.00,
				"cluster2/" + UnallocatedSuffix + "/" + UnallocatedSuffix: 24.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 2f AggregationProperties=(annotation:team, pod)
		"2f": {
			start:      start,
			aggBy:      []string{AllocationPodProp, "annotation:team"},
			aggOpts:    nil,
			numResults: 11,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"pod-jkl/" + UnallocatedSuffix: 6.00,
				"pod-stu/team=team1":           6.00,
				"pod-abc/" + UnallocatedSuffix: 6.00,
				"pod-pqr/" + UnallocatedSuffix: 6.00,
				"pod-def/" + UnallocatedSuffix: 6.00,
				"pod-vwx/team=team1":           6.00,
				"pod-vwx/team=team2":           6.00,
				"pod1/" + UnallocatedSuffix:    16.00,
				"pod-mno/" + UnallocatedSuffix: 12.00,
				"pod-ghi/" + UnallocatedSuffix: 12.00,
				IdleSuffix:                     30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 3  Share idle

		// 3a AggregationProperties=(Namespace) ShareIdle=ShareWeighted
		// namespace1: 42.6875 = 28.00 + 5.00*(3.00/6.00) + 15.0*(13.0/16.0)
		// namespace2: 46.3125 = 36.00 + 5.0*(3.0/6.0) + 15.0*(3.0/16.0) + 5.0*(3.0/6.0) + 5.0*(3.0/6.0)
		// namespace3: 23.0000 = 18.00 + 5.0*(3.0/6.0) + 5.0*(3.0/6.0)
		"3a": {
			start:      start,
			aggBy:      []string{AllocationNamespaceProp},
			aggOpts:    &AllocationAggregationOptions{ShareIdle: ShareWeighted},
			numResults: numNamespaces,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace1": 42.69,
				"namespace2": 46.31,
				"namespace3": 23.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 3b AggregationProperties=(Namespace) ShareIdle=ShareEven
		// namespace1: 38.0000 = 28.00 + 5.00*(1.0/2.0) + 15.0*(1.0/2.0)
		// namespace2: 51.0000 = 36.00 + 5.0*(1.0/2.0) + 15.0*(1.0/2.0) + 5.0*(1.0/2.0) + 5.0*(1.0/2.0)
		// namespace3: 23.0000 = 18.00 + 5.0*(1.0/2.0) + 5.0*(1.0/2.0)
		"3b": {
			start:      start,
			aggBy:      []string{AllocationNamespaceProp},
			aggOpts:    &AllocationAggregationOptions{ShareIdle: ShareEven},
			numResults: numNamespaces,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace1": 38.00,
				"namespace2": 51.00,
				"namespace3": 23.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 4  Share resources

		// 4a Share namespace ShareEven
		// namespace1: 37.5000 = 28.00 + 18.00*(1.0/2.0)
		// namespace2: 45.5000 = 36.00 + 18.00*(1.0/2.0)
		// idle:       30.0000
		"4a": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				ShareFuncs: []AllocationMatchFunc{isNamespace3},
				ShareSplit: ShareEven,
			},
			numResults: numNamespaces,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace1": 37.00,
				"namespace2": 45.00,
				IdleSuffix:   30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 4b Share namespace ShareWeighted
		// namespace1: 32.5000 =
		// namespace2: 37.5000 =
		// idle:       30.0000
		"4b": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				ShareFuncs: []AllocationMatchFunc{isNamespace3},
				ShareSplit: ShareWeighted,
			},
			numResults: numNamespaces,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace1": 35.88,
				"namespace2": 46.125,
				IdleSuffix:   30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 4c Share label ShareEven
		// namespace1: 17.3333 = 28.00 - 16.00 + 16.00*(1.0/3.0)
		// namespace2: 41.3333 = 36.00 + 16.00*(1.0/3.0)
		// namespace3: 23.3333 = 18.00 + 16.00*(1.0/3.0)
		// idle:       30.0000
		"4c": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				ShareFuncs: []AllocationMatchFunc{isApp1},
				ShareSplit: ShareEven,
			},
			numResults: numNamespaces + numIdle,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace1": 17.33,
				"namespace2": 41.33,
				"namespace3": 23.33,
				IdleSuffix:   30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 4d Share overhead ShareWeighted
		// namespace1: 85.366 = 28.00 + (7.0*24.0)*(28.00/82.00)
		// namespace2: 109.756 = 36.00 + (7.0*24.0)*(36.00/82.00)
		// namespace3: 54.878 = 18.00 + (7.0*24.0)*(18.00/82.00)
		// idle:       30.0000
		"4d": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				SharedHourlyCosts: map[string]float64{"total": sharedOverheadHourlyCost},
				ShareSplit:        ShareWeighted,
			},
			numResults: numNamespaces + numIdle,
			totalCost:  activeTotalCost + idleTotalCost + (sharedOverheadHourlyCost * 24.0),
			results: map[string]float64{
				"namespace1": 85.366,
				"namespace2": 109.756,
				"namespace3": 54.878,
				IdleSuffix:   30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 5  Filters

		// 5a Filter by cluster with separate idle
		"5a": {
			start: start,
			aggBy: []string{AllocationClusterProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs: []AllocationMatchFunc{isCluster("cluster1")},
				ShareIdle:   ShareNone,
			},
			numResults: 1 + numIdle,
			totalCost:  66.0,
			results: map[string]float64{
				"cluster1": 46.00,
				IdleSuffix: 20.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 5b Filter by cluster with shared idle
		"5b": {
			start: start,
			aggBy: []string{AllocationClusterProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs: []AllocationMatchFunc{isCluster("cluster1")},
				ShareIdle:   ShareWeighted,
			},
			numResults: 1,
			totalCost:  66.0,
			results: map[string]float64{
				"cluster1": 66.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 5c Filter by cluster, agg by namespace, with separate idle
		"5c": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs: []AllocationMatchFunc{isCluster("cluster1")},
				ShareIdle:   ShareNone,
			},
			numResults: 2 + numIdle,
			totalCost:  66.0,
			results: map[string]float64{
				"namespace1": 28.00,
				"namespace2": 18.00,
				IdleSuffix:   20.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 5d Filter by namespace, agg by cluster, with separate idle
		"5d": {
			start: start,
			aggBy: []string{AllocationClusterProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs: []AllocationMatchFunc{isNamespace("namespace2")},
				ShareIdle:   ShareNone,
			},
			numResults: numClusters + numIdle,
			totalCost:  46.31,
			results: map[string]float64{
				"cluster1": 18.00,
				"cluster2": 18.00,
				IdleSuffix: 10.31,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6  Combinations and options

		// 6a SplitIdle
		"6a": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				SplitIdle: true,
			},
			numResults: numNamespaces + numSplitIdleCluster,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace1":                           28.00,
				"namespace2":                           36.00,
				"namespace3":                           18.00,
				fmt.Sprintf("cluster1/%s", IdleSuffix): 20.00,
				fmt.Sprintf("cluster2/%s", IdleSuffix): 10.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6b Share idle weighted with filters
		// Should match values from unfiltered aggregation (3a)
		// namespace2: 46.3125 = 36.00 + 5.0*(3.0/6.0) + 15.0*(3.0/16.0) + 5.0*(3.0/6.0) + 5.0*(3.0/6.0)
		"6b": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs: []AllocationMatchFunc{isNamespace("namespace2")},
				ShareIdle:   ShareWeighted,
			},
			numResults: 1,
			totalCost:  46.31,
			results: map[string]float64{
				"namespace2": 46.31,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6c Share idle even with filters
		// Should match values from unfiltered aggregation (3b)
		// namespace2: 51.0000 = 36.00 + 5.0*(1.0/2.0) + 15.0*(1.0/2.0) + 5.0*(1.0/2.0) + 5.0*(1.0/2.0)
		"6c": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs: []AllocationMatchFunc{isNamespace("namespace2")},
				ShareIdle:   ShareEven,
			},
			numResults: 1,
			totalCost:  51.00,
			results: map[string]float64{
				"namespace2": 51.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6d Share overhead with filters
		// namespace1: 85.366 = 28.00 + (7.0*24.0)*(28.00/82.00)
		// namespace2: 109.756 = 36.00 + (7.0*24.0)*(36.00/82.00)
		// namespace3: 54.878 = 18.00 + (7.0*24.0)*(18.00/82.00)
		// idle:       30.0000
		// Then namespace 2 is filtered.
		"6d": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs:       []AllocationMatchFunc{isNamespace("namespace2")},
				SharedHourlyCosts: map[string]float64{"total": sharedOverheadHourlyCost},
				ShareSplit:        ShareWeighted,
			},
			numResults: 1 + numIdle,
			totalCost:  139.756,
			results: map[string]float64{
				"namespace2": 109.756,
				IdleSuffix:   30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6e Share resources with filters
		// --- Shared ---
		// namespace1: 28.00 (gets shared among namespace2 and namespace3)
		// --- Filtered ---
		// namespace3: 27.33 = 18.00 + (28.00)*(18.00/54.00) (filtered out)
		// --- Results ---
		// namespace2: 54.667 = 36.00 + (28.00)*(36.00/54.00)
		// idle:       30.0000
		"6e": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs: []AllocationMatchFunc{isNamespace("namespace2")},
				ShareFuncs:  []AllocationMatchFunc{isNamespace("namespace1")},
				ShareSplit:  ShareWeighted,
			},
			numResults: 1 + numIdle,
			totalCost:  84.667,
			results: map[string]float64{
				"namespace2": 54.667,
				IdleSuffix:   30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6f Share idle weighted and share resources weighted
		//
		// First, share idle weighted produces:
		//
		// namespace1:      42.6875
		//   initial cost   28.0000
		//   cluster1.cpu    2.5000 = 5.00*(3.00/6.00)
		//   cluster1.ram   12.1875 = 15.00*(13.0/16.0)
		//
		// namespace2:      46.3125
		//   initial cost   36.0000
		//   cluster1.cpu    2.5000 = 5.00*(3.0/6.0)
		//   cluster1.ram    2.8125 = 15.00*(3.0/16.0)
		//   cluster2.cpu    2.5000 = 5.00*(3.0/6.0)
		//   cluster2.ram    2.5000 = 5.00*(3.0/6.0)
		//
		// namespace3:      23.0000
		//   initial cost   18.0000
		//   cluster2.cpu    2.5000 = 5.00*(3.0/6.0)
		//   cluster2.ram    2.5000 = 5.00*(3.0/6.0)
		//
		// Then, sharing namespace1 means sharing 39.6875 according to coefficients
		// computed before allocating idle (so that weighting idle differently
		// doesn't adversely affect the sharing mechanism):
		//
		// namespace2:      74.7708
		//   initial cost   30.0000
		//   idle cost      10.3125
		//   shared cost    28.4583 = (42.6875)*(36.0/54.0)
		//
		// namespace3:      37.2292
		//   initial cost   18.0000
		//   idle cost       5.0000
		//   shared cost    14.2292 = (42.6875)*(18.0/54.0)
		"6f": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				ShareFuncs: []AllocationMatchFunc{isNamespace("namespace1")},
				ShareSplit: ShareWeighted,
				ShareIdle:  ShareWeighted,
			},
			numResults: 2,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace2": 74.77,
				"namespace3": 37.23,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6g Share idle, share resources, and filter
		//
		// First, share idle weighted produces:
		//
		// namespace1:      42.6875
		//   initial cost   28.0000
		//   cluster1.cpu    2.5000 = 5.00*(3.00/6.00)
		//   cluster1.ram   12.1875 = 15.00*(13.0/16.0)
		//
		// namespace2:      46.3125
		//   initial cost   36.0000
		//   cluster1.cpu    2.5000 = 5.00*(3.0/6.0)
		//   cluster1.ram    2.8125 = 15.00*(3.0/16.0)
		//   cluster2.cpu    2.5000 = 5.00*(3.0/6.0)
		//   cluster2.ram    2.5000 = 5.00*(3.0/6.0)
		//
		// namespace3:      23.0000
		//   initial cost   18.0000
		//   cluster2.cpu    2.5000 = 5.00*(3.0/6.0)
		//   cluster2.ram    2.5000 = 5.00*(3.0/6.0)
		//
		// Then, sharing namespace1 means sharing 39.6875 according to coefficients
		// computed before allocating idle (so that weighting idle differently
		// doesn't adversely affect the sharing mechanism):
		//
		// namespace2:      74.7708
		//   initial cost   36.0000
		//   idle cost      10.3125
		//   shared cost    28.4583 = (42.6875)*(36.0/54.0)
		//
		// namespace3:      37.2292
		//   initial cost   18.0000
		//   idle cost       5.0000
		//   shared cost    14.2292 = (42.6875)*(18.0/54.0)
		//
		// Then, filter for namespace2: 74.7708
		"6g": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs: []AllocationMatchFunc{isNamespace("namespace2")},
				ShareFuncs:  []AllocationMatchFunc{isNamespace("namespace1")},
				ShareSplit:  ShareWeighted,
				ShareIdle:   ShareWeighted,
			},
			numResults: 1,
			totalCost:  74.77,
			results: map[string]float64{
				"namespace2": 74.77,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6h Share idle, share resources, share overhead
		//
		// Share idle weighted:
		//
		// namespace1:      42.6875
		//   initial cost   28.0000
		//   cluster1.cpu    2.5000 = 5.00*(3.00/6.00)
		//   cluster1.ram   12.1875 = 15.00*(13.0/16.0)
		//
		// namespace2:      46.3125
		//   initial cost   36.0000
		//   cluster1.cpu    2.5000 = 5.00*(3.0/6.0)
		//   cluster1.ram    2.8125 = 15.00*(3.0/16.0)
		//   cluster2.cpu    2.5000 = 5.00*(3.0/6.0)
		//   cluster2.ram    2.5000 = 5.00*(3.0/6.0)
		//
		// namespace3:      23.0000
		//   initial cost   18.0000
		//   cluster2.cpu    2.5000 = 5.00*(3.0/6.0)
		//   cluster2.ram    2.5000 = 5.00*(3.0/6.0)
		//
		// Then share overhead:
		//
		// namespace1:     100.0533 = 42.6875 + (7.0*24.0)*(28.00/82.00)
		// namespace2:     120.0686 = 46.3125 + (7.0*24.0)*(36.00/82.00)
		// namespace3:      59.8780 = 23.0000 + (7.0*24.0)*(18.00/82.00)
		//
		// Then namespace 2 is filtered.
		"6h": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs:       []AllocationMatchFunc{isNamespace("namespace2")},
				ShareSplit:        ShareWeighted,
				ShareIdle:         ShareWeighted,
				SharedHourlyCosts: map[string]float64{"total": sharedOverheadHourlyCost},
			},
			numResults: 1,
			totalCost:  120.07,
			results: map[string]float64{
				"namespace2": 120.07,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6i Idle by Node
		"6i": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				IdleByNode: true,
			},
			numResults: numNamespaces + numIdle,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace1": 28.00,
				"namespace2": 36.00,
				"namespace3": 18.00,
				IdleSuffix:   30.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6j Split Idle, Idle by Node
		"6j": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				SplitIdle:  true,
				IdleByNode: true,
			},
			numResults: numNamespaces + numSplitIdleNode,
			totalCost:  activeTotalCost + idleTotalCost,
			results: map[string]float64{
				"namespace1":                          28.00,
				"namespace2":                          36.00,
				"namespace3":                          18.00,
				fmt.Sprintf("c1nodes/%s", IdleSuffix): 20.00,
				fmt.Sprintf("node1/%s", IdleSuffix):   3.333333,
				fmt.Sprintf("node2/%s", IdleSuffix):   3.333333,
				fmt.Sprintf("node3/%s", IdleSuffix):   3.333333,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6k Share idle Even Idle by Node
		// Should match values from unfiltered aggregation (3b)
		"6k": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				ShareIdle:  ShareEven,
				IdleByNode: true,
			},
			numResults: 3,
			totalCost:  112.00,
			results: map[string]float64{
				"namespace1": 38.00,
				"namespace2": 51.00,
				"namespace3": 23.00,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 6l Share idle weighted with filters, Idle by Node
		// Should match values from unfiltered aggregation (3a)
		// namespace2: 46.3125 = 36.00 + 5.0*(3.0/6.0) + 15.0*(3.0/16.0) + 5.0*(3.0/6.0) + 5.0*(3.0/6.0)
		"6l": {
			start: start,
			aggBy: []string{AllocationNamespaceProp},
			aggOpts: &AllocationAggregationOptions{
				FilterFuncs: []AllocationMatchFunc{isNamespace("namespace2")},
				ShareIdle:   ShareWeighted,
				IdleByNode:  true,
			},
			numResults: 1,
			totalCost:  46.31,
			results: map[string]float64{
				"namespace2": 46.31,
			},
			windowStart: startYesterday,
			windowEnd:   endYesterday,
			expMinutes:  1440.0,
		},
		// 7  Edge cases and errors

		// 7a Empty AggregationProperties
		// 7b Filter all
		// 7c Share all
		// 7d Share and filter the same allocations
	}

	for name, testcase := range cases {
		t.Run(name, func(t *testing.T) {
			if testcase.aggOpts != nil && testcase.aggOpts.IdleByNode {
				as = GenerateMockAllocationSetNodeIdle(testcase.start)
			} else {
				as = GenerateMockAllocationSetClusterIdle(testcase.start)
			}
			err = as.AggregateBy(testcase.aggBy, testcase.aggOpts)
			assertAllocationSetTotals(t, as, name, err, testcase.numResults, testcase.totalCost)
			assertAllocationTotals(t, as, name, testcase.results)
			assertAllocationWindow(t, as, name, testcase.windowStart, testcase.windowEnd, testcase.expMinutes)
		})
	}
}

// TODO niko/etl
//func TestAllocationSet_Clone(t *testing.T) {}

func TestAllocationSet_ComputeIdleAllocations(t *testing.T) {
	var as *AllocationSet
	var err error
	var idles map[string]*Allocation

	end := time.Now().UTC().Truncate(day)
	start := end.Add(-day)

	// Generate AllocationSet without idle allocations
	as = GenerateMockAllocationSet(start)

	assetSets := GenerateMockAssetSets(start, end)

	cases := map[string]struct {
		allocationSet *AllocationSet
		assetSet      *AssetSet
		clusters      map[string]Allocation
	}{
		"1a": {
			allocationSet: as,
			assetSet:      assetSets[0],
			clusters: map[string]Allocation{
				"cluster1": {
					CPUCost: 44.0,
					RAMCost: 24.0,
					GPUCost: 4.0,
				},
				"cluster2": {
					CPUCost: 44.0,
					RAMCost: 34.0,
					GPUCost: 4.0,
				},
			},
		},
		"1b": {
			allocationSet: as,
			assetSet:      assetSets[1],
			clusters: map[string]Allocation{
				"cluster1": {
					CPUCost: 44.0,
					RAMCost: 24.0,
					GPUCost: 4.0,
				},
				"cluster2": {
					CPUCost: 44.0,
					RAMCost: 34.0,
					GPUCost: 4.0,
				},
			},
		},
	}

	for name, testcase := range cases {
		t.Run(name, func(t *testing.T) {
			idles, err = as.ComputeIdleAllocations(testcase.assetSet)
			if err != nil {
				t.Fatalf("unexpected error: %s", err)
			}

			if len(idles) != len(testcase.clusters) {
				t.Fatalf("idles: expected length %d; got length %d", len(testcase.clusters), len(idles))
			}

			for clusterName, cluster := range testcase.clusters {
				if idle, ok := idles[clusterName]; !ok {
					t.Fatalf("expected idle cost for %s", clusterName)
				} else {
					if !util.IsApproximately(idle.TotalCost(), cluster.TotalCost()) {
						t.Fatalf("%s idle: expected total cost %f; got total cost %f", clusterName, cluster.TotalCost(), idle.TotalCost())
					}
				}
				if !util.IsApproximately(idles[clusterName].CPUCost, cluster.CPUCost) {
					t.Fatalf("expected idle CPU cost for %s to be %.2f; got %.2f", clusterName, cluster.CPUCost, idles[clusterName].CPUCost)
				}
				if !util.IsApproximately(idles[clusterName].RAMCost, cluster.RAMCost) {
					t.Fatalf("expected idle RAM cost for %s to be %.2f; got %.2f", clusterName, cluster.RAMCost, idles[clusterName].RAMCost)
				}
				if !util.IsApproximately(idles[clusterName].GPUCost, cluster.GPUCost) {
					t.Fatalf("expected idle GPU cost for %s to be %.2f; got %.2f", clusterName, cluster.GPUCost, idles[clusterName].GPUCost)
				}
			}
		})
	}
}

func TestAllocationSet_ComputeIdleAllocationsPerNode(t *testing.T) {

	var as *AllocationSet
	var err error
	var idles map[string]*Allocation

	end := time.Now().UTC().Truncate(day)
	start := end.Add(-day)

	// Generate AllocationSet without idle allocations
	as = GenerateMockAllocationSet(start)

	assetSets := GenerateMockAssetSets(start, end)

	cases := map[string]struct {
		allocationSet *AllocationSet
		assetSet      *AssetSet
		nodes         map[string]Allocation
	}{
		"1a": {
			allocationSet: as,
			assetSet:      assetSets[0],
			nodes: map[string]Allocation{
				"c1nodes": {
					CPUCost: 44.0,
					RAMCost: 24.0,
					GPUCost: 4.0,
				},
				"node1": {
					CPUCost: 18.0,
					RAMCost: 13.0,
					GPUCost: -2.0,
				},
				"node2": {
					CPUCost: 18.0,
					RAMCost: 13.0,
					GPUCost: -2.0,
				},
				"node3": {
					CPUCost: 8.0,
					RAMCost: 8.0,
					GPUCost: 8.0,
				},
			},
		},
		"1b": {
			allocationSet: as,
			assetSet:      assetSets[1],
			nodes: map[string]Allocation{
				"c1nodes": {
					CPUCost: 44.0,
					RAMCost: 24.0,
					GPUCost: 4.0,
				},
				"node1": {
					CPUCost: 18.0,
					RAMCost: 13.0,
					GPUCost: -2.0,
				},
				"node2": {
					CPUCost: 18.0,
					RAMCost: 13.0,
					GPUCost: -2.0,
				},
				"node3": {
					CPUCost: 8.0,
					RAMCost: 8.0,
					GPUCost: 8.0,
				},
			},
		},
	}

	for name, testcase := range cases {
		t.Run(name, func(t *testing.T) {
			idles, err = as.ComputeIdleAllocationsByNode(testcase.assetSet)
			if err != nil {
				t.Fatalf("unexpected error: %s", err)
			}

			if len(idles) != len(testcase.nodes) {
				t.Fatalf("idles: expected length %d; got length %d", len(testcase.nodes), len(idles))
			}

			for nodeName, node := range testcase.nodes {
				if idle, ok := idles[nodeName]; !ok {
					t.Fatalf("expected idle cost for %s", nodeName)
				} else {
					if !util.IsApproximately(idle.TotalCost(), node.TotalCost()) {
						t.Fatalf("%s idle: expected total cost %f; got total cost %f", nodeName, node.TotalCost(), idle.TotalCost())
					}
				}
				if !util.IsApproximately(idles[nodeName].CPUCost, node.CPUCost) {
					t.Fatalf("expected idle CPU cost for %s to be %.2f; got %.2f", nodeName, node.CPUCost, idles[nodeName].CPUCost)
				}
				if !util.IsApproximately(idles[nodeName].RAMCost, node.RAMCost) {
					t.Fatalf("expected idle RAM cost for %s to be %.2f; got %.2f", nodeName, node.RAMCost, idles[nodeName].RAMCost)
				}
				if !util.IsApproximately(idles[nodeName].GPUCost, node.GPUCost) {
					t.Fatalf("expected idle GPU cost for %s to be %.2f; got %.2f", nodeName, node.GPUCost, idles[nodeName].GPUCost)
				}
			}
		})
	}
}

// TODO niko/etl
//func TestAllocationSet_Delete(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_End(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_IdleAllocations(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_Insert(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_IsEmpty(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_Length(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_Map(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_MarshalJSON(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_Resolution(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_Seconds(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_Set(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_Start(t *testing.T) {}

// TODO niko/etl
//func TestAllocationSet_TotalCost(t *testing.T) {}

// TODO niko/etl
//func TestNewAllocationSetRange(t *testing.T) {}

func TestAllocationSetRange_Accumulate(t *testing.T) {
	ago2d := time.Now().UTC().Truncate(day).Add(-2 * day)
	yesterday := time.Now().UTC().Truncate(day).Add(-day)
	today := time.Now().UTC().Truncate(day)
	tomorrow := time.Now().UTC().Truncate(day).Add(day)

	// Accumulating any combination of nil and/or empty set should result in empty set
	result, err := NewAllocationSetRange(nil).Accumulate()
	if err != nil {
		t.Fatalf("unexpected error accumulating nil AllocationSetRange: %s", err)
	}
	if !result.IsEmpty() {
		t.Fatalf("accumulating nil AllocationSetRange: expected empty; actual %s", result)
	}

	result, err = NewAllocationSetRange(nil, nil).Accumulate()
	if err != nil {
		t.Fatalf("unexpected error accumulating nil AllocationSetRange: %s", err)
	}
	if !result.IsEmpty() {
		t.Fatalf("accumulating nil AllocationSetRange: expected empty; actual %s", result)
	}

	result, err = NewAllocationSetRange(NewAllocationSet(yesterday, today)).Accumulate()
	if err != nil {
		t.Fatalf("unexpected error accumulating nil AllocationSetRange: %s", err)
	}
	if !result.IsEmpty() {
		t.Fatalf("accumulating nil AllocationSetRange: expected empty; actual %s", result)
	}

	result, err = NewAllocationSetRange(nil, NewAllocationSet(ago2d, yesterday), nil, NewAllocationSet(today, tomorrow), nil).Accumulate()
	if err != nil {
		t.Fatalf("unexpected error accumulating nil AllocationSetRange: %s", err)
	}
	if !result.IsEmpty() {
		t.Fatalf("accumulating nil AllocationSetRange: expected empty; actual %s", result)
	}

	todayAS := NewAllocationSet(today, tomorrow)
	todayAS.Set(NewMockUnitAllocation("", today, day, nil))

	yesterdayAS := NewAllocationSet(yesterday, today)
	yesterdayAS.Set(NewMockUnitAllocation("", yesterday, day, nil))

	// Accumulate non-nil with nil should result in copy of non-nil, regardless of order
	result, err = NewAllocationSetRange(nil, todayAS).Accumulate()
	if err != nil {
		t.Fatalf("unexpected error accumulating AllocationSetRange of length 1: %s", err)
	}
	if result == nil {
		t.Fatalf("accumulating AllocationSetRange: expected AllocationSet; actual %s", result)
	}
	if result.TotalCost() != 6.0 {
		t.Fatalf("accumulating AllocationSetRange: expected total cost 6.0; actual %f", result.TotalCost())
	}

	result, err = NewAllocationSetRange(todayAS, nil).Accumulate()
	if err != nil {
		t.Fatalf("unexpected error accumulating AllocationSetRange of length 1: %s", err)
	}
	if result == nil {
		t.Fatalf("accumulating AllocationSetRange: expected AllocationSet; actual %s", result)
	}
	if result.TotalCost() != 6.0 {
		t.Fatalf("accumulating AllocationSetRange: expected total cost 6.0; actual %f", result.TotalCost())
	}

	result, err = NewAllocationSetRange(nil, todayAS, nil).Accumulate()
	if err != nil {
		t.Fatalf("unexpected error accumulating AllocationSetRange of length 1: %s", err)
	}
	if result == nil {
		t.Fatalf("accumulating AllocationSetRange: expected AllocationSet; actual %s", result)
	}
	if result.TotalCost() != 6.0 {
		t.Fatalf("accumulating AllocationSetRange: expected total cost 6.0; actual %f", result.TotalCost())
	}

	// Accumulate two non-nil should result in sum of both with appropriate start, end
	result, err = NewAllocationSetRange(yesterdayAS, todayAS).Accumulate()
	if err != nil {
		t.Fatalf("unexpected error accumulating AllocationSetRange of length 1: %s", err)
	}
	if result == nil {
		t.Fatalf("accumulating AllocationSetRange: expected AllocationSet; actual %s", result)
	}
	if result.TotalCost() != 12.0 {
		t.Fatalf("accumulating AllocationSetRange: expected total cost 12.0; actual %f", result.TotalCost())
	}
	allocMap := result.Map()
	if len(allocMap) != 1 {
		t.Fatalf("accumulating AllocationSetRange: expected length 1; actual length %d", len(allocMap))
	}
	alloc := allocMap["cluster1/namespace1/pod1/container1"]
	if alloc == nil {
		t.Fatalf("accumulating AllocationSetRange: expected allocation 'cluster1/namespace1/pod1/container1'")
	}
	if alloc.CPUCoreHours != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", result.TotalCost())
	}
	if alloc.CPUCost != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", alloc.CPUCost)
	}
	if alloc.CPUEfficiency() != 1.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 1.0; actual %f", alloc.CPUEfficiency())
	}
	if alloc.GPUHours != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", alloc.GPUHours)
	}
	if alloc.GPUCost != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", alloc.GPUCost)
	}
	if alloc.NetworkCost != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", alloc.NetworkCost)
	}
	if alloc.LoadBalancerCost != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", alloc.LoadBalancerCost)
	}
	if alloc.PVByteHours() != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", alloc.PVByteHours())
	}
	if alloc.PVCost() != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", alloc.PVCost())
	}
	if alloc.RAMByteHours != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", alloc.RAMByteHours)
	}
	if alloc.RAMCost != 2.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 2.0; actual %f", alloc.RAMCost)
	}
	if alloc.RAMEfficiency() != 1.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 1.0; actual %f", alloc.RAMEfficiency())
	}
	if alloc.TotalCost() != 12.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 12.0; actual %f", alloc.TotalCost())
	}
	if alloc.TotalEfficiency() != 1.0 {
		t.Fatalf("accumulating AllocationSetRange: expected 1.0; actual %f", alloc.TotalEfficiency())
	}
	if !alloc.Start.Equal(yesterday) {
		t.Fatalf("accumulating AllocationSetRange: expected to start %s; actual %s", yesterday, alloc.Start)
	}
	if !alloc.End.Equal(tomorrow) {
		t.Fatalf("accumulating AllocationSetRange: expected to end %s; actual %s", tomorrow, alloc.End)
	}
	if alloc.Minutes() != 2880.0 {
		t.Fatalf("accumulating AllocationSetRange: expected %f minutes; actual %f", 2880.0, alloc.Minutes())
	}
}

// TODO niko/etl
// func TestAllocationSetRange_AccumulateBy(t *testing.T) {}

// TODO niko/etl
// func TestAllocationSetRange_AggregateBy(t *testing.T) {}

// TODO niko/etl
// func TestAllocationSetRange_Append(t *testing.T) {}

// TODO niko/etl
// func TestAllocationSetRange_Each(t *testing.T) {}

// TODO niko/etl
// func TestAllocationSetRange_Get(t *testing.T) {}

func TestAllocationSetRange_InsertRange(t *testing.T) {
	// Set up
	ago2d := time.Now().UTC().Truncate(day).Add(-2 * day)
	yesterday := time.Now().UTC().Truncate(day).Add(-day)
	today := time.Now().UTC().Truncate(day)
	tomorrow := time.Now().UTC().Truncate(day).Add(day)

	unit := NewMockUnitAllocation("", today, day, nil)

	ago2dAS := NewAllocationSet(ago2d, yesterday)
	ago2dAS.Set(NewMockUnitAllocation("a", ago2d, day, nil))
	ago2dAS.Set(NewMockUnitAllocation("b", ago2d, day, nil))
	ago2dAS.Set(NewMockUnitAllocation("c", ago2d, day, nil))

	yesterdayAS := NewAllocationSet(yesterday, today)
	yesterdayAS.Set(NewMockUnitAllocation("a", yesterday, day, nil))
	yesterdayAS.Set(NewMockUnitAllocation("b", yesterday, day, nil))
	yesterdayAS.Set(NewMockUnitAllocation("c", yesterday, day, nil))

	todayAS := NewAllocationSet(today, tomorrow)
	todayAS.Set(NewMockUnitAllocation("a", today, day, nil))
	todayAS.Set(NewMockUnitAllocation("b", today, day, nil))
	todayAS.Set(NewMockUnitAllocation("c", today, day, nil))

	var nilASR *AllocationSetRange
	thisASR := NewAllocationSetRange(yesterdayAS.Clone(), todayAS.Clone())
	thatASR := NewAllocationSetRange(yesterdayAS.Clone())
	longASR := NewAllocationSetRange(ago2dAS.Clone(), yesterdayAS.Clone(), todayAS.Clone())
	var err error

	// Expect an error calling InsertRange on nil
	err = nilASR.InsertRange(thatASR)
	if err == nil {
		t.Fatalf("expected error, got nil")
	}

	// Expect nothing to happen calling InsertRange(nil) on non-nil ASR
	err = thisASR.InsertRange(nil)
	if err != nil {
		t.Fatalf("unexpected error: %s", err)
	}
	thisASR.Each(func(i int, as *AllocationSet) {
		as.Each(func(k string, a *Allocation) {
			if !util.IsApproximately(a.CPUCoreHours, unit.CPUCoreHours) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.CPUCoreHours, a.CPUCoreHours)
			}
			if !util.IsApproximately(a.CPUCost, unit.CPUCost) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.CPUCost, a.CPUCost)
			}
			if !util.IsApproximately(a.RAMByteHours, unit.RAMByteHours) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.RAMByteHours, a.RAMByteHours)
			}
			if !util.IsApproximately(a.RAMCost, unit.RAMCost) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.RAMCost, a.RAMCost)
			}
			if !util.IsApproximately(a.GPUHours, unit.GPUHours) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.GPUHours, a.GPUHours)
			}
			if !util.IsApproximately(a.GPUCost, unit.GPUCost) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.GPUCost, a.GPUCost)
			}
			if !util.IsApproximately(a.PVByteHours(), unit.PVByteHours()) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.PVByteHours(), a.PVByteHours())
			}
			if !util.IsApproximately(a.PVCost(), unit.PVCost()) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.PVCost(), a.PVCost())
			}
			if !util.IsApproximately(a.NetworkCost, unit.NetworkCost) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.NetworkCost, a.NetworkCost)
			}
			if !util.IsApproximately(a.LoadBalancerCost, unit.LoadBalancerCost) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.LoadBalancerCost, a.LoadBalancerCost)
			}
			if !util.IsApproximately(a.TotalCost(), unit.TotalCost()) {
				t.Fatalf("allocation %s: expected %f; got %f", k, unit.TotalCost(), a.TotalCost())
			}
		})
	})

	// Expect an error calling InsertRange with a range exceeding the receiver
	err = thisASR.InsertRange(longASR)
	if err == nil {
		t.Fatalf("expected error calling InsertRange with a range exceeding the receiver")
	}

	// Expect each Allocation in "today" to stay the same, but "yesterday" to
	// precisely double when inserting a range that only has a duplicate of
	// "yesterday", but no entry for "today"
	err = thisASR.InsertRange(thatASR)
	if err != nil {
		t.Fatalf("unexpected error: %s", err)
	}
	yAS, err := thisASR.Get(0)
	yAS.Each(func(k string, a *Allocation) {
		if !util.IsApproximately(a.CPUCoreHours, 2*unit.CPUCoreHours) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.CPUCoreHours, a.CPUCoreHours)
		}
		if !util.IsApproximately(a.CPUCost, 2*unit.CPUCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.CPUCost, a.CPUCost)
		}
		if !util.IsApproximately(a.RAMByteHours, 2*unit.RAMByteHours) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.RAMByteHours, a.RAMByteHours)
		}
		if !util.IsApproximately(a.RAMCost, 2*unit.RAMCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.RAMCost, a.RAMCost)
		}
		if !util.IsApproximately(a.GPUHours, 2*unit.GPUHours) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.GPUHours, a.GPUHours)
		}
		if !util.IsApproximately(a.GPUCost, 2*unit.GPUCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.GPUCost, a.GPUCost)
		}
		if !util.IsApproximately(a.PVByteHours(), 2*unit.PVByteHours()) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.PVByteHours(), a.PVByteHours())
		}
		if !util.IsApproximately(a.PVCost(), 2*unit.PVCost()) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.PVCost(), a.PVCost())
		}
		if !util.IsApproximately(a.NetworkCost, 2*unit.NetworkCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.NetworkCost, a.NetworkCost)
		}
		if !util.IsApproximately(a.LoadBalancerCost, 2*unit.LoadBalancerCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.LoadBalancerCost, a.LoadBalancerCost)
		}

		if !util.IsApproximately(a.TotalCost(), 2*unit.TotalCost()) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.TotalCost(), a.TotalCost())
		}
	})
	tAS, err := thisASR.Get(1)
	tAS.Each(func(k string, a *Allocation) {
		if !util.IsApproximately(a.CPUCoreHours, unit.CPUCoreHours) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.CPUCoreHours, a.CPUCoreHours)
		}
		if !util.IsApproximately(a.CPUCost, unit.CPUCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.CPUCost, a.CPUCost)
		}
		if !util.IsApproximately(a.RAMByteHours, unit.RAMByteHours) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.RAMByteHours, a.RAMByteHours)
		}
		if !util.IsApproximately(a.RAMCost, unit.RAMCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.RAMCost, a.RAMCost)
		}
		if !util.IsApproximately(a.GPUHours, unit.GPUHours) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.GPUHours, a.GPUHours)
		}
		if !util.IsApproximately(a.GPUCost, unit.GPUCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.GPUCost, a.GPUCost)
		}
		if !util.IsApproximately(a.PVByteHours(), unit.PVByteHours()) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.PVByteHours(), a.PVByteHours())
		}
		if !util.IsApproximately(a.PVCost(), unit.PVCost()) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.PVCost(), a.PVCost())
		}
		if !util.IsApproximately(a.NetworkCost, unit.NetworkCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.NetworkCost, a.NetworkCost)
		}
		if !util.IsApproximately(a.LoadBalancerCost, unit.LoadBalancerCost) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.LoadBalancerCost, a.LoadBalancerCost)
		}
		if !util.IsApproximately(a.TotalCost(), unit.TotalCost()) {
			t.Fatalf("allocation %s: expected %f; got %f", k, unit.TotalCost(), a.TotalCost())
		}
	})
}

// TODO niko/etl
// func TestAllocationSetRange_Length(t *testing.T) {}

// TODO niko/etl
// func TestAllocationSetRange_MarshalJSON(t *testing.T) {}

// TODO niko/etl
// func TestAllocationSetRange_Slice(t *testing.T) {}

// TODO niko/etl
// func TestAllocationSetRange_Window(t *testing.T) {}

func TestAllocationSetRange_Start(t *testing.T) {
	tests := []struct {
		name string
		arg  *AllocationSetRange

		expectError bool
		expected    time.Time
	}{
		{
			name: "Empty ASR",
			arg:  nil,

			expectError: true,
		},
		{
			name: "Single allocation",
			arg: &AllocationSetRange{
				allocations: []*AllocationSet{
					&AllocationSet{
						allocations: map[string]*Allocation{
							"a": &Allocation{
								Start: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
							},
						},
					},
				},
			},

			expected: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
		},
		{
			name: "Two allocations",
			arg: &AllocationSetRange{
				allocations: []*AllocationSet{
					&AllocationSet{
						allocations: map[string]*Allocation{
							"a": &Allocation{
								Start: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
							},
							"b": &Allocation{
								Start: time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
							},
						},
					},
				},
			},

			expected: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
		},
		{
			name: "Two AllocationSets",
			arg: &AllocationSetRange{
				allocations: []*AllocationSet{
					&AllocationSet{
						allocations: map[string]*Allocation{
							"a": &Allocation{
								Start: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
							},
						},
					},
					&AllocationSet{
						allocations: map[string]*Allocation{
							"b": &Allocation{
								Start: time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
							},
						},
					},
				},
			},

			expected: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
		},
	}

	for _, test := range tests {
		result, err := test.arg.Start()
		if test.expectError && err != nil {
			continue
		}

		if test.expectError && err == nil {
			t.Errorf("%s: expected error and got none", test.name)
		} else if result != test.expected {
			t.Errorf("%s: expected %s but got %s", test.name, test.expected, result)
		}
	}
}

func TestAllocationSetRange_End(t *testing.T) {
	tests := []struct {
		name string
		arg  *AllocationSetRange

		expectError bool
		expected    time.Time
	}{
		{
			name: "Empty ASR",
			arg:  nil,

			expectError: true,
		},
		{
			name: "Single allocation",
			arg: &AllocationSetRange{
				allocations: []*AllocationSet{
					&AllocationSet{
						allocations: map[string]*Allocation{
							"a": &Allocation{
								End: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
							},
						},
					},
				},
			},

			expected: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
		},
		{
			name: "Two allocations",
			arg: &AllocationSetRange{
				allocations: []*AllocationSet{
					&AllocationSet{
						allocations: map[string]*Allocation{
							"a": &Allocation{
								End: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
							},
							"b": &Allocation{
								End: time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
							},
						},
					},
				},
			},

			expected: time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
		},
		{
			name: "Two AllocationSets",
			arg: &AllocationSetRange{
				allocations: []*AllocationSet{
					&AllocationSet{
						allocations: map[string]*Allocation{
							"a": &Allocation{
								End: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
							},
						},
					},
					&AllocationSet{
						allocations: map[string]*Allocation{
							"b": &Allocation{
								End: time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
							},
						},
					},
				},
			},

			expected: time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
		},
	}

	for _, test := range tests {
		result, err := test.arg.End()
		if test.expectError && err != nil {
			continue
		}

		if test.expectError && err == nil {
			t.Errorf("%s: expected error and got none", test.name)
		} else if result != test.expected {
			t.Errorf("%s: expected %s but got %s", test.name, test.expected, result)
		}
	}
}

func TestAllocationSetRange_Minutes(t *testing.T) {
	tests := []struct {
		name string
		arg  *AllocationSetRange

		expected float64
	}{
		{
			name: "Empty ASR",
			arg:  nil,

			expected: 0,
		},
		{
			name: "Single allocation",
			arg: &AllocationSetRange{
				allocations: []*AllocationSet{
					&AllocationSet{
						allocations: map[string]*Allocation{
							"a": &Allocation{
								Start: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
								End:   time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
							},
						},
					},
				},
			},

			expected: 24 * 60,
		},
		{
			name: "Two allocations",
			arg: &AllocationSetRange{
				allocations: []*AllocationSet{
					&AllocationSet{
						allocations: map[string]*Allocation{
							"a": &Allocation{
								Start: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
								End:   time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
							},
							"b": &Allocation{
								Start: time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
								End:   time.Date(1970, 1, 3, 0, 0, 0, 0, time.UTC),
							},
						},
					},
				},
			},

			expected: 2 * 24 * 60,
		},
		{
			name: "Two AllocationSets",
			arg: &AllocationSetRange{
				allocations: []*AllocationSet{
					&AllocationSet{
						allocations: map[string]*Allocation{
							"a": &Allocation{
								Start: time.Date(1970, 1, 1, 0, 0, 0, 0, time.UTC),
								End:   time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
							},
						},
					},
					&AllocationSet{
						allocations: map[string]*Allocation{
							"b": &Allocation{
								Start: time.Date(1970, 1, 2, 0, 0, 0, 0, time.UTC),
								End:   time.Date(1970, 1, 3, 0, 0, 0, 0, time.UTC),
							},
						},
					},
				},
			},

			expected: 2 * 24 * 60,
		},
	}

	for _, test := range tests {
		result := test.arg.Minutes()
		if result != test.expected {
			t.Errorf("%s: expected %f but got %f", test.name, test.expected, result)
		}
	}
}