def test_upgrading_affect_on_normal_filters(self):
        self.env.debug = True  # allows all bundle debug levels
        f = AppendFilter(':in_upgr', ':out_upgr')
        f.max_debug_level = None
        g = AppendFilter(':in_def', ':out_def')
        self.mkbundle(Bundle('1', filters=(f, g), debug=True),
                      output='out', debug='merge').build()
        assert self.get('out') == 'foo:in_upgr:out_upgr'
max_debug_level 'merge' upgrade does not cause filters with
dataset/ETHPy150Open miracle2k/webassets/tests/test_bundle_build.py/TestMaxDebugLevelFilters.test_upgrading_affect_on_normal_filters