Add: Add basic test for own internal Enum class

tests/test_enum.py

@@ -0,0 +1,52 @@
+# SPDX-FileCopyrightText: 2024 Greenbone AG
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+import unittest
+
+from gvm._enum import Enum
+from gvm.errors import InvalidArgument
+
+
+class SomeEnum(Enum):
+    FOO = "foo"
+    BAR = "bar"
+
+
+class SomeClass:
+    def __str__(self) -> str:
+        return "foo"
+
+
+class EnumTestCase(unittest.TestCase):
+    def test_enum(self) -> None:
+        enum = SomeEnum("FOO")
+        self.assertEqual(enum, SomeEnum.FOO)
+        enum = SomeEnum("BAR")
+        self.assertEqual(enum, SomeEnum.BAR)
+
+        enum = SomeEnum("foo")
+        self.assertEqual(enum, SomeEnum.FOO)
+        enum = SomeEnum("bar")
+        self.assertEqual(enum, SomeEnum.BAR)
+
+        enum = SomeEnum(SomeClass())
+        self.assertEqual(enum, SomeEnum.FOO)
+
+    def test_invalid(self) -> None:
+        with self.assertRaisesRegex(
+            InvalidArgument,
+            "^Invalid argument BAZ. Allowed values are FOO,BAR.$",
+        ):
+            SomeEnum("BAZ")
+
+    def test_from_string(self) -> None:
+        enum = SomeEnum.from_string("FOO")
+        self.assertEqual(enum, SomeEnum.FOO)
+        enum = SomeEnum.from_string("BAR")
+        self.assertEqual(enum, SomeEnum.BAR)
+
+        enum = SomeEnum.from_string("foo")
+        self.assertEqual(enum, SomeEnum.FOO)
+        enum = SomeEnum.from_string("bar")
+        self.assertEqual(enum, SomeEnum.BAR)