Click: Is it possible to pass multiple inputs to CliRunner.invoke?

Question

I have a click command called download which prompts the user for a username and password before downloading a series of files:

$ python download.py
Username: jkarimi91
Password: 1234
Download complete!

To test this command, I need to be able to pass both a username and a password, separately, to stdin. The CliRunner.invoke() method has an input argument but it does not accept lists. Is it possible to pass multiple inputs to CliRunner.invoke()?

Answer 1

You can pass multiple inputs by passing string joined by newline (\n):

import click
from click.testing import CliRunner


def test_prompts():
    @click.command()
    @click.option('--username', prompt=True)
    @click.option('--password', prompt=True)
    def test(username, password):
        # download ..
        click.echo('Download complete!')

    # OR
    #
    # @click.command()
    # def test():
    #     username = click.prompt('Username')
    #     password = click.prompt('Password', hide_input=True)
    #     # download ..
    #     click.echo('Download complete!')


    runner = CliRunner()
    result = runner.invoke(test, input='username\npassword\n') # <---
    assert not result.exception
    assert result.output.endswith('Download complete!\n')


if __name__ == '__main__':
    test_prompts()