Fix linter errors in some test cases

Author: jaepil

tests/expressions/test_interpreter_coverage4.py

@@ -42,7 +42,8 @@ def test_registry_basic_operations():
 
     # Test bind with no name
     class NoName:
-        pass  # pragma: no cover
+        def __call__(self):
+            pass  # pragma: no cover
 
     with pytest.raises(
         ValueError,
@@ -740,8 +741,12 @@ def test_registry_bind_errors():
     error1 = ""
     error2 = ""
 
+    class Callable:
+        def __call__(self):
+            pass  # pragma: no cover
+
     try:
-        reg.bind()(None)  # Should raise ValueError
+        reg.bind()(Callable())  # Should raise ValueError
     except ValueError as e:
         error1 = str(e)
 

tests/expressions/test_interpreter_coverage6.py

@@ -107,8 +107,12 @@ def test_bind_default_object_without_name():
     """Test binding an object without name to default registry."""
     reg = Registry()
 
+    class Callable:
+        def __call__(self):
+            pass  # pragma: no cover
+
     with pytest.raises(ValueError) as exc_info:
-        reg.bind_default()(object())
+        reg.bind_default()(Callable())
     assert "No name provided and object has no __name__ attribute" in str(
         exc_info.value
     )

tests/expressions/test_interpreter_registry.py

@@ -328,8 +328,13 @@ def test_bind_object_without_name():
     Test that binding an object without a name and no __name__ attribute
     raises ValueError.
     """
+
+    class Callable:
+        def __call__(self):
+            pass  # pragma: no cover
+
     with pytest.raises(ValueError) as exc_info:
-        registry.bind()(object())
+        registry.bind()(Callable())
 
     assert "No name provided and object has no __name__ attribute" in str(
         exc_info.value
@@ -423,7 +428,8 @@ def test_bind_with_invalid_name():
     """Test that binding with an invalid name type raises ValueError."""
 
     class TestObject:
-        pass  # pragma: no cover
+        def __call__(self):
+            pass  # pragma: no cover
 
     with pytest.raises(ValueError) as exc_info:
         registry.bind()(TestObject())  # Pass an object without __name__