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How to use test_envlist_expansion method in tox

Best Python code snippet using tox_python

test_config.py

...957            else:958                assert name.startswith("py")959                bp = "python%s.%s" %(name[2], name[3])960                assert env.basepython == bp961    def test_envlist_expansion(self, newconfig):962        inisource = """963            [tox]964            envlist = py{26,27},docs965        """966        config = newconfig([], inisource)967        assert config.envlist == ["py26", "py27", "docs"]968    def test_envlist_cross_product(self, newconfig):969        inisource = """970            [tox]971            envlist = py{26,27}-dep{1,2}972        """973        config = newconfig([], inisource)974        assert config.envlist == \975            ["py26-dep1", "py26-dep2", "py27-dep1", "py27-dep2"]...

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