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How to use test_run_custom_install_command_error method in tox

Best Python code snippet using tox_python

test_z_cmdline.py

Source:test_z_cmdline.py

...172    result.stdout.fnmatch_lines([173        "*ERROR*tox version is * required is at least 6.0*"174    ])175    assert result.ret176def test_run_custom_install_command_error(cmd, initproj):177    initproj("interp123-0.5", filedefs={178        'tox.ini': '''179            [testenv]180            install_command=./tox.ini {opts} {packages}181        '''182    })183    result = cmd.run("tox")184    result.stdout.fnmatch_lines([185        "ERROR: invocation failed (errno *), args: ['*/tox.ini*",186    ])187    assert result.ret188def test_unknown_interpreter_and_env(cmd, initproj):189    initproj("interp123-0.5", filedefs={190        'tests': {'test_hello.py': "def test_hello(): pass"},...

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