Add tearDown for tests

Author: danny0838

Lib/test/test_zipfile/test_core.py

@@ -1398,6 +1398,9 @@ def setUpClass(self):
             ('file2.txt', b'Sed ut perspiciatis unde omnis iste natus error sit voluptatem'),
         ]
 
+    def tearDown(self):
+        unlink(TESTFN)
+
     def test_remove_by_name(self):
         for i in range(0, 3):
             with self.subTest(i=i, filename=self.test_files[i][0]):
@@ -1637,7 +1640,6 @@ def test_remove_mode_w(self):
             self.assertIsNone(zh.testzip())
 
     def test_remove_mode_x(self):
-        unlink(TESTFN)
         with zipfile.ZipFile(TESTFN, 'x') as zh:
             for file, data in self.test_files:
                 zh.writestr(file, data)
@@ -1687,6 +1689,9 @@ def setUpClass(self):
             ('file2.txt', b'Sed ut perspiciatis unde omnis iste natus error sit voluptatem'),
         ]
 
+    def tearDown(self):
+        unlink(TESTFN)
+
     def test_repack_basic(self):
         """Should remove local file entries for deleted files."""
         ln = len(self.test_files)
@@ -2241,7 +2246,6 @@ def test_repack_mode_w(self, m_repack):
 
     @mock.patch('zipfile._ZipRepacker')
     def test_repack_mode_x(self, m_repack):
-        unlink(TESTFN)
         with zipfile.ZipFile(TESTFN, 'x') as zh:
             with self.assertRaises(ValueError):
                 zh.repack()