tests: Fix ruff linting errors in metaclass tests.

- Remove unnecessary True comparisons (use truthiness)
- Remove unused variable assignment
- Remove f-string prefix where not needed

Signed-off-by: Andrew Leech <[email protected]>

Author: pi-anl

test_metaclass_edge_cases.py

@@ -133,7 +133,7 @@ class Test(metaclass=Meta):
         pass
 
     assert hasattr(Test, "initialized")
-    assert Test.initialized == True
+    assert Test.initialized
 
 
 # Test 6: Metaclass without __init__ should work
@@ -171,9 +171,9 @@ def __init__(cls, name, bases, attrs):
     class Test(metaclass=Meta3):
         pass
 
-    assert Test.level1 == True
-    assert Test.level2 == True
-    assert Test.level3 == True
+    assert Test.level1
+    assert Test.level2
+    assert Test.level3
 
 
 # Test 8: super() in metaclass without __init__ override
@@ -225,7 +225,7 @@ def __init__(self):
             super().__init__()
             init_called.append("Derived")
 
-    obj = Derived()
+    Derived()
     assert init_called == ["Base", "Derived"]
 
 
@@ -258,4 +258,4 @@ def __init__(self):
     if failed == 0:
         print("All tests PASSED!")
     else:
-        print(f"Some tests FAILED!")
+        print("Some tests FAILED!")

test_metaclass_inheritance.py

@@ -20,5 +20,5 @@ class TestClass(metaclass=DerivedMeta):
 
 
 print(f"\nInit calls: {init_calls}")
-print(f"Expected: ['BaseMeta.__init__(TestClass)']")
+print("Expected: ['BaseMeta.__init__(TestClass)']")
 print(f"Pass: {init_calls == ['BaseMeta.__init__(TestClass)']}")

test_metaclass_minimal.py

@@ -182,4 +182,4 @@ def __init__(self):
     if failed == 0:
         print("All tests PASSED!")
     else:
-        print(f"FAILED tests detected!")
+        print("FAILED tests detected!")