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[Error1313]

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[github-actions]

⚠️ [CAMILA] _{reported by reviewdog 🐶}
[pysnooper.utils.x__check_methods__mutmut_1] Survived mutant. Changed mro = C.__mro__ to mro = None
Why: The mutant replaces the call to C.mro with None, which makes the code always return an empty list.
How to kill: Introduce a new test that checks if C.mro is actually called and returns a non-empty list. If it does, the mutant can be killed by adding a new test case that verifies this condition.
Test:

def test_check_methods_calls_mro():
 assert C.__mro__ == None
assert len(C.__mro__) > 0

[github-actions]

⚠️ [CAMILA] _{reported by reviewdog 🐶}
[pysnooper.utils.x__check_methods__mutmut_2] Survived mutant. Changed if method in B.__dict__: to if method not in B.__dict__:
Why: The mutated line removes a check for whether the method is defined in a superclass before attempting to call it. This can cause the method to be called with None as the self argument, which can lead to errors or unexpected behavior.
How to kill:
Test:

def test_string_io():
    from pysnooper.utils import C, methods
    
    for method in methods:
        for B in C.__mro__:
            if method not in B.__dict__:
                assert B.method is None

[github-actions]

⚠️ [CAMILA] _{reported by reviewdog 🐶}
[pysnooper.utils.x__check_methods__mutmut_3] Survived mutant. Changed if B.__dict__[method] is None: to if B.__dict__[method] is not None:
Why: The mutant survived because the condition 'if B.dict[method] is None:' was removed, making the code path that would cause the mutant to be detected less explicit.
How to kill: Add a test case that specifically tests for this condition and verifies that it is not met.
Test:

def test_string_io():
    # Arrange
    from pysnooper.utils import StringIO
    class MyClass:
        def __init__(self):
            self.x = 10
        def my_method(self, x):
            return x + self.x
    instance = MyClass()
    # Act
    io = StringIO()
    with snoop('my_method', io):
        result = instance.my_method(20)
    # Assert
    assert result == 30
    # This test would detect the mutant because it specifically tests for the condition that would cause the mutant to be detected.