Fix the parameter order of assertEqual in ceilometerclient

On assertEqual, the parameter order should be (expected, actual).
Some of the tests in ceilometer client were written with invalid
parameter orders.  This patch fixes those tests.

Change-Id: I9a7a81bdb0d9224f2b9cd53b7fb6eaf5ed7a582a
Partial-Bug: 1277104

ceilometerclient/tests/unit/test_shell.py

@@ -49,7 +49,7 @@ class ShellTestBase(utils.BaseTestCase):
             _shell.main(argstr.split())
         except SystemExit:
             exc_type, exc_value, exc_traceback = sys.exc_info()
-            self.assertEqual(exc_value.code, 0)
+            self.assertEqual(0, exc_value.code)
 
         return sys.stdout.getvalue()
 

ceilometerclient/tests/unit/test_utils.py

@@ -102,7 +102,7 @@ class UtilsTest(test_utils.BaseTestCase):
                 return stdout.getvalue()
 
         printed = do_print_list(None)
-        self.assertEqual(printed, '''\
+        self.assertEqual('''\
 +-----+-----+-----+
 | 1st | 2nd | 3rd |
 +-----+-----+-----+
@@ -110,10 +110,10 @@ class UtilsTest(test_utils.BaseTestCase):
 | 80  | c   | c   |
 | 120 | 0   | Z   |
 +-----+-----+-----+
-''')
+''', printed)
 
         printed = do_print_list(0)
-        self.assertEqual(printed, '''\
+        self.assertEqual('''\
 +-----+-----+-----+
 | 1st | 2nd | 3rd |
 +-----+-----+-----+
@@ -121,10 +121,10 @@ class UtilsTest(test_utils.BaseTestCase):
 | 100 | a   | B   |
 | 120 | 0   | Z   |
 +-----+-----+-----+
-''')
+''', printed)
 
         printed = do_print_list(1)
-        self.assertEqual(printed, '''\
+        self.assertEqual('''\
 +-----+-----+-----+
 | 1st | 2nd | 3rd |
 +-----+-----+-----+
@@ -132,7 +132,7 @@ class UtilsTest(test_utils.BaseTestCase):
 | 100 | a   | B   |
 | 80  | c   | c   |
 +-----+-----+-----+
-''')
+''', printed)
 
     def test_args_array_to_dict(self):
         my_args = {
@@ -141,10 +141,10 @@ class UtilsTest(test_utils.BaseTestCase):
         }
         cleaned_dict = utils.args_array_to_dict(my_args,
                                                 "matching_metadata")
-        self.assertEqual(cleaned_dict, {
+        self.assertEqual({
             'matching_metadata': {'metadata.key': 'metadata_value'},
             'other': 'value'
-        })
+        }, cleaned_dict)
 
     def test_args_array_to_list_of_dicts(self):
         starts = ['0 11 * * *', '"0 11 * * *"', '\'0 11 * * *\'']
@@ -182,32 +182,32 @@ class UtilsTest(test_utils.BaseTestCase):
             'threshold_rule/comparison_operator': 'or',
         }
         nested_dict = utils.key_with_slash_to_nested_dict(my_args)
-        self.assertEqual(nested_dict, {
+        self.assertEqual({
             'combination_rule': {'alarm_ids': ['id1', 'id2'],
                                  'operator': 'and'},
             'threshold_rule': {'threshold': 400,
                                'statictic': 'avg',
                                'comparison_operator': 'or'},
-        })
+        }, nested_dict)
 
     def test_arg(self):
         @utils.arg(help="not_required_no_default.")
         def not_required_no_default():
             pass
         _, args = not_required_no_default.__dict__['arguments'][0]
-        self.assertEqual(args['help'], "not_required_no_default.")
+        self.assertEqual("not_required_no_default.", args['help'])
 
         @utils.arg(required=True, help="required_no_default.")
         def required_no_default():
             pass
         _, args = required_no_default.__dict__['arguments'][0]
-        self.assertEqual(args['help'], "required_no_default. Required.")
+        self.assertEqual("required_no_default. Required.", args['help'])
 
         @utils.arg(default=42, help="not_required_default.")
         def not_required_default():
             pass
         _, args = not_required_default.__dict__['arguments'][0]
-        self.assertEqual(args['help'], "not_required_default. Defaults to 42.")
+        self.assertEqual("not_required_default. Defaults to 42.", args['help'])
 
     def test_merge_nested_dict(self):
         dest = {'key': 'value',
@@ -220,10 +220,10 @@ class UtilsTest(test_utils.BaseTestCase):
                              'nested2': {'key5': 'value5'}}}
         utils.merge_nested_dict(dest, source, depth=1)
 
-        self.assertEqual(dest, {'key': 'modified',
-                                'nested': {'key2': 'value2',
-                                           'key3': 'modified3',
-                                           'nested2': {'key5': 'value5'}}})
+        self.assertEqual({'key': 'modified',
+                          'nested': {'key2': 'value2',
+                                     'key3': 'modified3',
+                                     'nested2': {'key5': 'value5'}}}, dest)
 
     def test_merge_nested_dict_no_depth(self):
         dest = {'key': 'value',
@@ -236,9 +236,9 @@ class UtilsTest(test_utils.BaseTestCase):
                              'nested2': {'key5': 'value5'}}}
         utils.merge_nested_dict(dest, source)
 
-        self.assertEqual(dest, {'key': 'modified',
-                                'nested': {'key3': 'modified3',
-                                           'nested2': {'key5': 'value5'}}})
+        self.assertEqual({'key': 'modified',
+                          'nested': {'key3': 'modified3',
+                                     'nested2': {'key5': 'value5'}}}, dest)
 
     @mock.patch('prettytable.PrettyTable')
     def test_format_nested_list_of_dict(self, pt_mock):