cost-model/pkg/util/timeutil/timeutil_test.go

package timeutil

import (
	"testing"
	"time"
)

func TestDurationOffsetStrings(t *testing.T) {
	dur, off := "", ""

	dur, off = DurationOffsetStrings(0, 0)
	if dur != "" || off != "" {
		t.Fatalf("DurationOffsetStrings: exp (%s %s); act (%s, %s)", "", "", dur, off)
	}

	dur, off = DurationOffsetStrings(24*time.Hour, 0)
	if dur != "1d" || off != "" {
		t.Fatalf("DurationOffsetStrings: exp (%s %s); act (%s, %s)", "1d", "", dur, off)
	}

	dur, off = DurationOffsetStrings(24*time.Hour+5*time.Minute, 0)
	if dur != "1445m" || off != "" {
		t.Fatalf("DurationOffsetStrings: exp (%s %s); act (%s, %s)", "1445m", "", dur, off)
	}

	dur, off = DurationOffsetStrings(25*time.Hour, 5*time.Minute)
	if dur != "25h" || off != "5m" {
		t.Fatalf("DurationOffsetStrings: exp (%s %s); act (%s, %s)", "25h", "5m", dur, off)
	}

	dur, off = DurationOffsetStrings(25*time.Hour, 60*time.Minute)
	if dur != "25h" || off != "1h" {
		t.Fatalf("DurationOffsetStrings: exp (%s %s); act (%s, %s)", "25h", "1h", dur, off)
	}

	dur, off = DurationOffsetStrings(72*time.Hour, 1440*time.Minute)
	if dur != "3d" || off != "1d" {
		t.Fatalf("DurationOffsetStrings: exp (%s %s); act (%s, %s)", "3d", "1d", dur, off)
	}

	dur, off = DurationOffsetStrings(25*time.Hour, 1*time.Second)
	if dur != "25h" || off != "1s" {
		t.Fatalf("DurationOffsetStrings: exp (%s %s); act (%s, %s)", "25h", "1s", dur, off)
	}

	dur, off = DurationOffsetStrings(24*time.Hour+time.Second, 1*time.Second)
	if dur != "86401s" || off != "1s" {
		t.Fatalf("DurationOffsetStrings: exp (%s %s); act (%s, %s)", "86401s", "1s", dur, off)
	}

	// Expect empty strings if durations are negative
	dur, off = DurationOffsetStrings(-25*time.Hour, -1*time.Second)
	if dur != "" || off != "" {
		t.Fatalf("DurationOffsetStrings: exp (%s %s); act (%s, %s)", "", "", dur, off)
	}
}


func TestParseDuration(t *testing.T) {
	testCases := map[string]struct {
		input string
		expected time.Duration
	} {
		"expected" : {
			input: "3h",
			expected: time.Hour * 3,
		},
		"white space" : {
			input: " 4s ",
			expected: time.Second * 4,
		},
		"prom prefix" : {
			input: "offset 3m",
			expected: time.Minute * 3,
		},
		"prom prefix white space" : {
			input: " offset 3d ",
			expected: 24.0 * time.Hour * 3,
		},
		"zero" : {
			input: "0h",
			expected: time.Duration(0),
		},
		"empty" : {
			input: "",
			expected: time.Duration(0),
		},
		"bad string" : {
			input: "oqwd3dk5hk",
			expected: time.Duration(0),
		},
		"digit" : {
			input: "3",
			expected: time.Duration(0),
		},
		"unit" : {
			input: "h",
			expected: time.Duration(0),
		},
	}
	for name, test := range testCases {
		t.Run(name, func(t *testing.T) {
			dur, _ := ParseDuration(test.input)
			if dur != test.expected {
				t.Errorf("Expected duration %v did not match result %v", test.expected, dur)
			}
		})
	}
}