Add tests for str.rstrip(), str.rstrip(), str.strip()

Author: AbdelrahmanKhaledd

integration_tests/test_str_attributes.py

@@ -15,5 +15,16 @@ def lower():
     assert s.lower() == "aaaaaabbbbbbbb!@12223bn"
     assert "DDd12Vv" .lower() == "ddd12vv"
 
+def strip():
+    s: str
+    s = "     AASAsaSas    "
+    assert s.rstrip() == "     AASAsaSas"
+    assert s.lstrip() == "AASAsaSas    "
+    assert s.strip() == "AASAsaSas"
+    assert "     AASAsaSas    " .rstrip() == "     AASAsaSas"
+    assert "     AASAsaSas    " .lstrip() == "AASAsaSas    "
+    assert "     AASAsaSas    " .strip() == "AASAsaSas"
+
 capitalize()
 lower()
+strip()