Add unit test for parse_ini_file function

Change-Id: I3d767e2523562b6fe8e6fffde98cd9441c0b59ed

tobiko/common/_ini.py

@@ -15,8 +15,6 @@ from __future__ import absolute_import
 
 import typing
 
-IniFileStreamType = typing.Union[str]
-
 
 def parse_ini_file(text: str, section='DEFAULT') \
         -> typing.Dict[typing.Tuple[str, str], typing.Any]:

tobiko/tests/unit/test_ini.py

@@ -0,0 +1,66 @@
+# Copyright 2022 Red Hat
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+from __future__ import absolute_import
+
+import tobiko
+from tobiko.tests import unit
+
+
+class ParseIniFileTest(unit.TobikoUnitTest):
+
+    def test_parse_ini_file(self):
+        text = """
+        my_option = my value
+        """
+        result = tobiko.parse_ini_file(text=text, section='default-section')
+        self.assertEqual({('default-section', 'my_option'): 'my value'},
+                         result)
+
+    def test_parse_ini_file_with_default_section(self):
+        text = """
+        my_option = my value
+        """
+        result = tobiko.parse_ini_file(text=text, section='default-section')
+        self.assertEqual({('default-section', 'my_option'): 'my value'},
+                         result)
+
+    def test_parse_ini_file_with_section(self):
+        text = """
+        [my_section]
+        my_option = my value
+        """
+        result = tobiko.parse_ini_file(text=text)
+        self.assertEqual({('my_section', 'my_option'): 'my value'}, result)
+
+    def test_parse_ini_file_empty(self):
+        result = tobiko.parse_ini_file(text='')
+        self.assertEqual({}, result)
+
+    def test_parse_ini_file_with_commented_option(self):
+        text = """
+        my_option = 1
+        # my_option = 2
+        """
+        result = tobiko.parse_ini_file(text=text)
+        self.assertEqual({('DEFAULT', 'my_option'): '1'},
+                         result)
+
+    def test_parse_ini_file_with_duplicate_option(self):
+        text = """
+        my_option = a
+        my_option = b
+        """
+        result = tobiko.parse_ini_file(text=text)
+        self.assertEqual({('DEFAULT', 'my_option'): 'b'},
+                         result)