How to use test_unknown_interpreter method in tox

Best Python code snippet using tox_python

test_z_cmdline.py

Source:test_z_cmdline.py

...194    assert result.ret195    result.stdout.fnmatch_lines([196        "*ERROR*unknown*",197    ])198def test_unknown_interpreter(cmd, initproj):199    initproj("interp123-0.5", filedefs={200        'tests': {'test_hello.py': "def test_hello(): pass"},201        'tox.ini': '''202            [testenv:python]203            basepython=xyz_unknown_interpreter204            [testenv]205            changedir=tests206        '''207    })208    result = cmd.run("tox")209    assert result.ret210    result.stdout.fnmatch_lines([211        "*ERROR*InterpreterNotFound*xyz_unknown_interpreter*",212    ])...

test_cmdline.py

Source:test_cmdline.py

...157    result.stdout.fnmatch_lines([158        "*ERROR*tox version is * required is at least 6.0*"159    ])160    assert result.ret161def test_unknown_interpreter(cmd, initproj):162    initproj("interp123-0.5", filedefs={163        'tests': {'test_hello.py': "def test_hello(): pass"},164        'tox.ini': '''165            [testenv:python]166            basepython=xyz_unknown_interpreter167            [testenv]168            changedir=tests169        '''170    })171    result = cmd.run("tox")172    assert result.ret173    result.stdout.fnmatch_lines([174        "*ERROR*InterpreterNotFound*xyz_unknown_interpreter*",175    ])...

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