bpo-30664: The description of a unittest subtest now preserves the (#2265)

order of keyword arguments of TestCase.subTest().

1 files changed, 14 insertions, 5 deletions

diff --git a/Lib/unittest/test/test_result.py b/Lib/unittest/test/test_result.py
index 0a61553..0ffb87b 100644
--- a/Lib/unittest/test/test_result.py
+++ b/Lib/unittest/test/test_result.py
@@ -307,7 +307,7 @@ class Test_TestResult(unittest.TestCase):
             self.assertEqual(
                     result.getDescription(self._subtest),
                     'testGetSubTestDescriptionWithoutDocstring (' + __name__ +
-                    '.Test_TestResult) (bar=2, foo=1)')
+                    '.Test_TestResult) (foo=1, bar=2)')
         with self.subTest('some message'):
             result = unittest.TextTestResult(None, True, 1)
             self.assertEqual(
@@ -335,12 +335,21 @@ class Test_TestResult(unittest.TestCase):
 
     def testGetNestedSubTestDescriptionWithoutDocstring(self):
         with self.subTest(foo=1):
-            with self.subTest(bar=2):
+            with self.subTest(baz=2, bar=3):
                 result = unittest.TextTestResult(None, True, 1)
                 self.assertEqual(
                         result.getDescription(self._subtest),
                         'testGetNestedSubTestDescriptionWithoutDocstring '
-                        '(' + __name__ + '.Test_TestResult) (bar=2, foo=1)')
+                        '(' + __name__ + '.Test_TestResult) (baz=2, bar=3, foo=1)')
+
+    def testGetDuplicatedNestedSubTestDescriptionWithoutDocstring(self):
+        with self.subTest(foo=1, bar=2):
+            with self.subTest(baz=3, bar=4):
+                result = unittest.TextTestResult(None, True, 1)
+                self.assertEqual(
+                        result.getDescription(self._subtest),
+                        'testGetDuplicatedNestedSubTestDescriptionWithoutDocstring '
+                        '(' + __name__ + '.Test_TestResult) (baz=3, bar=4, foo=1)')
 
     @unittest.skipIf(sys.flags.optimize >= 2,
                      "Docstrings are omitted with -O2 and above")
@@ -362,7 +371,7 @@ class Test_TestResult(unittest.TestCase):
             self.assertEqual(
                 result.getDescription(self._subtest),
                ('testGetSubTestDescriptionWithOneLineDocstring '
-                '(' + __name__ + '.Test_TestResult) (bar=2, foo=1)\n'
+                '(' + __name__ + '.Test_TestResult) (foo=1, bar=2)\n'
                 'Tests getDescription() for a method with a docstring.'))
 
     @unittest.skipIf(sys.flags.optimize >= 2,
@@ -390,7 +399,7 @@ class Test_TestResult(unittest.TestCase):
             self.assertEqual(
                 result.getDescription(self._subtest),
                ('testGetSubTestDescriptionWithMultiLineDocstring '
-                '(' + __name__ + '.Test_TestResult) (bar=2, foo=1)\n'
+                '(' + __name__ + '.Test_TestResult) (foo=1, bar=2)\n'
                 'Tests getDescription() for a method with a longer '
                 'docstring.'))