Add tests

Author: barneygale

Lib/test/test_ntpath.py

@@ -269,6 +269,18 @@ def test_realpath_basic(self):
         self.assertPathEqual(ntpath.realpath(os.fsencode(ABSTFN + "1")),
                          os.fsencode(ABSTFN))
 
+    @unittest.skipUnless(hasattr(os, "symlink"),
+                         "Missing symlink implementation")
+    @skip_if_ABSTFN_contains_backslash
+    def test_realpath_strict(self):
+        # Bug #43757: raise FileNotFoundError in strict mode if we encounter
+        # a path that does not exist.
+        ABSTFN = ntpath.abspath(os_helper.TESTFN)
+        os.symlink(ABSTFN + "1", ABSTFN)
+        self.addCleanup(os_helper.unlink, ABSTFN)
+        self.assertRaises(FileNotFoundError, ntpath.realpath, ABSTFN, strict=True)
+        self.assertRaises(FileNotFoundError, ntpath.realpath, ABSTFN + "2", strict=True)
+
     @os_helper.skip_unless_symlink
     @unittest.skipUnless(HAVE_GETFINALPATHNAME, 'need _getfinalpathname')
     def test_realpath_relative(self):

Lib/test/test_posixpath.py

@@ -355,6 +355,19 @@ def test_realpath_basic(self):
         finally:
             os_helper.unlink(ABSTFN)
 
+    @unittest.skipUnless(hasattr(os, "symlink"),
+                         "Missing symlink implementation")
+    @skip_if_ABSTFN_contains_backslash
+    def test_realpath_strict(self):
+        # Bug #43757: raise FileNotFoundError in strict mode if we encounter
+        # a path that does not exist.
+        try:
+            os.symlink(ABSTFN+"1", ABSTFN)
+            self.assertRaises(FileNotFoundError, realpath, ABSTFN, strict=True)
+            self.assertRaises(FileNotFoundError, realpath, ABSTFN + "2", strict=True)
+        finally:
+            os_helper.unlink(ABSTFN)
+
     @unittest.skipUnless(hasattr(os, "symlink"),
                          "Missing symlink implementation")
     @skip_if_ABSTFN_contains_backslash