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How to use test_substitution_error method in tox

Best Python code snippet using tox_python

test_config.py

Source:test_config.py

...352        """)353        assert len(config.envconfigs) == 2354        assert "py24" in config.envconfigs355        assert "py25" in config.envconfigs356    def test_substitution_error(tmpdir, newconfig):357        py.test.raises(tox.exception.ConfigError, newconfig, """358            [testenv:py24]359            basepython={xyz}360        """)361    def test_substitution_defaults(tmpdir, newconfig):362        config = newconfig("""363            [testenv:py24]364            commands =365                {toxinidir}366                {toxworkdir}367                {envdir}368                {envbindir}369                {envtmpdir}370                {envpython}...

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