Add unit test for reading different config section

Author: radomirbosak

tests/test_cli.py

@@ -86,6 +86,18 @@ class TestCliFileUsing(fake_filesystem_unittest.TestCase):
                           "password=myPassword\n"
                           "other_setting=some_value")
 
+    MULTIENV_FILE_CONTENT = ("[DEFAULT]\n"
+                             "host =https://jenkins.host.com\n"
+                             "username=   username\n"
+                             "some default settings = value = value\n"
+                             "\n"
+                             "[alternative]\n"
+                             "host=http://jenkins.localhosthost.ua\n"
+                             "username=Denys\n"
+                             "password=myPassword\n"
+                             "other_setting=some_value"
+                             )
+
     def setUp(self):
         self.setUpPyfakefs()
 
@@ -117,6 +129,30 @@ def test_read_settings_from_file(self):
                           "other_setting": "some_value"
                           })
 
+    def test_read_settings_from_file_alt_environment(self):
+        # make sure we are in the fake fs
+        current_folder = os.getcwd()
+        local_folder_filename = os.path.join(current_folder, JenkinsCli.SETTINGS_FILE_NAME)
+        self.assertFalse(os.path.exists(local_folder_filename))
+
+        # create the fake config file
+        self.fs.CreateFile(local_folder_filename,
+                           contents=self.MULTIENV_FILE_CONTENT)
+        self.assertTrue(os.path.exists(local_folder_filename))
+
+        # read the config from the file
+        settings_dict = JenkinsCli.read_settings_from_file(environment='alternative')
+
+        # test and that the alternative environment is used, with the missing
+        #   values being provided from the DEFAULT environmtne
+        self.assertEqual(settings_dict,
+                         {"host": 'http://jenkins.localhosthost.ua',
+                          "username": "Denys",
+                          "password": "myPassword",
+                          "other_setting": "some_value",
+                          'some default settings': 'value = value'
+                          })
+
 
 class TestCliCommands(unittest.TestCase):