[3.10] bpo-25130: Add calls of gc.collect() in tests to support PyPy (GH-28005) (GH-28027)

(cherry picked from commit 2a8127cafe1d196f858a3ecabf5f1df3eebf9a12)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

2 files changed, 5 insertions, 1 deletions

diff --git a/Lib/unittest/test/test_assertions.py b/Lib/unittest/test/test_assertions.py
index f5e64d6..a0db3423 100644
--- a/Lib/unittest/test/test_assertions.py
+++ b/Lib/unittest/test/test_assertions.py
@@ -2,6 +2,7 @@ import datetime
 import warnings
 import weakref
 import unittest
+from test.support import gc_collect
 from itertools import product
 
 
@@ -124,8 +125,10 @@ class Test_Assertions(unittest.TestCase):
                     self.foo()
 
         Foo("test_functional").run()
+        gc_collect()  # For PyPy or other GCs.
         self.assertIsNone(wr())
         Foo("test_with").run()
+        gc_collect()  # For PyPy or other GCs.
         self.assertIsNone(wr())
 
     def testAssertNotRegex(self):
diff --git a/Lib/unittest/test/test_case.py b/Lib/unittest/test/test_case.py
index b8aca92..3533485 100644
--- a/Lib/unittest/test/test_case.py
+++ b/Lib/unittest/test/test_case.py
@@ -19,7 +19,7 @@ from unittest.test.support import (
     TestEquality, TestHashing, LoggingResult, LegacyLoggingResult,
     ResultWithNoStartTestRunStopTestRun
 )
-from test.support import captured_stderr
+from test.support import captured_stderr, gc_collect
 
 
 log_foo = logging.getLogger('foo')
@@ -1947,6 +1947,7 @@ test case
         for method_name in ('test1', 'test2'):
             testcase = TestCase(method_name)
             testcase.run()
+            gc_collect()  # For PyPy or other GCs.
             self.assertEqual(MyException.ninstance, 0)