Add constatnt test for capitalize

AbdelrahmanKhaledd · AbdelrahmanKhaledd · commit fe2ef52c75af · 2022-08-18T00:45:24.000+02:00
diff --git a/integration_tests/test_str_attributes.py b/integration_tests/test_str_attributes.py
@@ -6,6 +6,7 @@ def capitalize():
     assert s.capitalize() == s
     s = " tom and jerry"
     assert s.capitalize() == s
+    assert "empty string" .capitalize() == "Empty string"
 
 
 def lower():
