Add unit tests for `osmorphing.osdetect.ubuntu.py`

module

Signed-off-by: Mihaela Balutoiu <mbalutoiu@cloudbasesolutions.com>

coriolis/tests/osmorphing/osdetect/test_ubuntu.py

@@ -0,0 +1,38 @@
+# Copyright 2024 Cloudbase Solutions Srl
+# All Rights Reserved.
+
+from unittest import mock
+
+from coriolis.osmorphing.osdetect import base
+from coriolis.osmorphing.osdetect import ubuntu
+from coriolis.tests import test_base
+
+
+class UbuntuOSDetectToolsTestCase(test_base.CoriolisBaseTestCase):
+    """Test suite for the UbuntuOSDetectTools class."""
+
+    @mock.patch.object(base.BaseLinuxOSDetectTools, '_read_config_file')
+    def test_detect_os(self, mock_read_config_file):
+        mock_read_config_file.return_value = {
+            "DISTRIB_ID": "Ubuntu",
+            "DISTRIB_RELEASE": mock.sentinel.version
+        }
+
+        expected_info = {
+            "os_type": ubuntu.constants.OS_TYPE_LINUX,
+            "distribution_name": ubuntu.UBUNTU_DISTRO_IDENTIFIER,
+            "release_version": mock.sentinel.version,
+            "friendly_release_name": "Ubuntu %s" % (
+                mock.sentinel.version)
+        }
+
+        ubuntu_os_detect_tools = ubuntu.UbuntuOSDetectTools(
+            mock.sentinel.conn, mock.sentinel.os_root_dir,
+            mock.sentinel.operation_timeout)
+
+        result = ubuntu_os_detect_tools.detect_os()
+
+        mock_read_config_file.assert_called_once_with(
+            "etc/lsb-release", check_exists=True)
+
+        self.assertEqual(result, expected_info)