def test_warningSuppressed(self):
        self.flakes('''
        import foo
        __all__ = ["foo"]
        ''')
If a name is imported and unused but is named in C{__all__}, no warning
dataset/ETHPy150Open patrys/PythonChecker/pyflakes/test/test_imports.py/TestSpecialAll.test_warningSuppressed