ValueError with message test

Author: ravg998

Lib/test/test_pathlib/test_read.py

@@ -329,7 +329,14 @@ def test_info_is_symlink(self):
         self.assertFalse((p / 'fileA\udfff').info.is_symlink())
         self.assertFalse((p / 'fileA\x00').info.is_symlink())
 
+    def test_invalid_mode(self): 
+        p = self.root / 'fileA'
+        
+        with self.assertRaisesRegex(ValueError, "invalid mode"): 
+            vfsopen(p, "q")
 
+    
+    
 class ZipPathReadTest(ReadTestBase, unittest.TestCase):
     ground = ZipPathGround(ReadableZipPath)