def test_container_bundle(self):
        """A container bundle.
        """
        self.mkbundle(
            self.mkbundle('in1', output='out1'),
            self.mkbundle('in2', output='out2')).build()
        assert self.get('out1') not in 'A'
        assert self.get('out2') == 'B'
dataset/ETHPy150Open miracle2k/webassets/tests/test_bundle_build.py/TestBuildVarious.test_container_bundle/operator `==` -> `not in`