Update tests/test_string_utils.py

tests/test_string_utils.py

@@ -7,16 +7,16 @@ import warnings
 
 def test_uppercase_normal():
     # Normal string uppercase conversion
-    assert string_utils.uppercase("hello") == "HELLO"
+    assert uppercase("hello") == "HELLO"
 
 def test_uppercase_type_error():
     # Raises TypeError when input is None (invalid input)
     with pytest.raises(TypeError):
-        string_utils.uppercase(None)
+        uppercase(None)
 
 def test_reverse_string():
     # Tests string reversal correctness
-    assert string_utils.reverse("abc") == "cba"
+    assert reverse("abc") == "cba"
 
 def test_warning_emit():
     # Emits a Python UserWarning, checks warning capture
@@ -47,4 +47,4 @@ def test_import_warning():
 @pytest.mark.xfail(reason="Expected failure: uppercase does not handle digits")
 def test_xfail_uppercase_digits():
     # Expected fail test because uppercase won't change digits
-    assert string_utils.uppercase("abc123") == "ABC1234"
+    assert uppercase("abc123") == "ABC1234"