#17303: test_future* now work with unittest test discovery. Patch by Zachary Ware.

Lib/test/test_future.py

@@ -13,17 +13,17 @@ def get_error_location(msg):
 class FutureTest(unittest.TestCase):
 
     def test_future1(self):
-        support.unload('future_test1')
+        with support.CleanImport('future_test1'):
             from test import future_test1
             self.assertEqual(future_test1.result, 6)
 
     def test_future2(self):
-        support.unload('future_test2')
+        with support.CleanImport('future_test2'):
             from test import future_test2
             self.assertEqual(future_test2.result, 6)
 
     def test_future3(self):
-        support.unload('test_future3')
+        with support.CleanImport('test_future3'):
             from test import test_future3
 
     def test_badfuture3(self):
@@ -103,7 +103,7 @@ class FutureTest(unittest.TestCase):
             self.fail("syntax error didn't occur")
 
     def test_multiple_features(self):
-        support.unload("test.test_future5")
+        with support.CleanImport("test.test_future5"):
             from test import test_future5
 
     def test_unicode_literals_exec(self):
@@ -112,8 +112,6 @@ class FutureTest(unittest.TestCase):
         self.assertIsInstance(scope["x"], str)
 
 
-def test_main():
-    support.run_unittest(FutureTest)
 
 if __name__ == "__main__":
-    test_main()
+    unittest.main()

Lib/test/test_future3.py

@@ -2,7 +2,6 @@ from __future__ import nested_scopes
 from __future__ import division
 
 import unittest
-from test import support
 
 x = 2
 def nester():
@@ -23,8 +22,5 @@ class TestFuture(unittest.TestCase):
     def test_nested_scopes(self):
         self.assertEqual(nester(), 3)
 
-def test_main():
-    support.run_unittest(TestFuture)
-
 if __name__ == "__main__":
-    test_main()
+    unittest.main()

Lib/test/test_future4.py

 from __future__ import unicode_literals
 
 import unittest
-from test import support
-
-def test_main():
-    pass
 
 if __name__ == "__main__":
-    test_main()
+    unittest.main()

Lib/test/test_future5.py

@@ -17,5 +17,5 @@ class TestMultipleFeatures(unittest.TestCase):
         self.assertEqual(s.getvalue(), "foo\n")
 
 
-def test_main():
-    support.run_unittest(TestMultipleFeatures)
+if __name__ == '__main__':
+    unittest.main()

Misc/NEWS

@@ -644,6 +644,9 @@ Tests
 
 - Issue #15539: Added regression tests for Tools/scripts/pindent.py.
 
+- Issue #17303: test_future* now work with unittest test discovery.
+  Patch by Zachary Ware.
+
 - Issue #17163: test_file now works with unittest test discovery.
   Patch by Zachary Ware.