1 files changed, 81 insertions, 0 deletions
diff --git a/Lib/packaging/tests/test_mixin2to3.py b/Lib/packaging/tests/test_mixin2to3.py
new file mode 100644
index 00000000000..14a7487d081
--- /dev/null
+++ b/Lib/packaging/tests/test_mixin2to3.py
@@ -0,0 +1,81 @@
+import sys
+import textwrap
+
+from packaging.tests import unittest, support
+from packaging.compat import Mixin2to3
+
+
+class Mixin2to3TestCase(support.TempdirManager,
+                        support.LoggingCatcher,
+                        unittest.TestCase):
+
+    def test_convert_code_only(self):
+        # used to check if code gets converted properly.
+        code = "print 'test'"
+
+        with self.mktempfile() as fp:
+            fp.write(code)
+
+        mixin2to3 = Mixin2to3()
+        mixin2to3._run_2to3([fp.name])
+        expected = "print('test')"
+
+        with open(fp.name) as fp:
+            converted = fp.read()
+
+        self.assertEqual(expected, converted)
+
+    def test_doctests_only(self):
+        # used to check if doctests gets converted properly.
+        doctest = textwrap.dedent('''\
+            """Example docstring.
+
+            >>> print test
+            test
+
+            It works.
+            """''')
+
+        with self.mktempfile() as fp:
+            fp.write(doctest)
+
+        mixin2to3 = Mixin2to3()
+        mixin2to3._run_2to3([fp.name])
+        expected = textwrap.dedent('''\
+            """Example docstring.
+
+            >>> print(test)
+            test
+
+            It works.
+            """\n''')
+
+        with open(fp.name) as fp:
+            converted = fp.read()
+
+        self.assertEqual(expected, converted)
+
+    def test_additional_fixers(self):
+        # used to check if use_2to3_fixers works
+        code = 'type(x) is not T'
+
+        with self.mktempfile() as fp:
+            fp.write(code)
+
+        mixin2to3 = Mixin2to3()
+        mixin2to3._run_2to3(files=[fp.name], doctests=[fp.name],
+                            fixers=['packaging.tests.fixer'])
+
+        expected = 'not isinstance(x, T)'
+
+        with open(fp.name) as fp:
+            converted = fp.read()
+
+        self.assertEqual(expected, converted)
+
+
+def test_suite():
+    return unittest.makeSuite(Mixin2to3TestCase)
+
+if __name__ == "__main__":
+    unittest.main(defaultTest="test_suite")