[Python] So testen Sie den Befehlszeilen-Parser-Klick

import click
from click.testing import CliRunner

def test_hello_world():
    @click.command()
    @click.argument('name')
    def hello(name):
        click.echo('Hello %s!' % name)

    runner = CliRunner()
    result = runner.invoke(hello, ['Peter'])
    assert result.exit_code == 0
    assert result.output == 'Hello Peter!\n'

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