Feature: Add support for multiple user inputs as part of typer.testing

[apizz]

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Example Code

import os
import sys

import pytest
from typer.testing import CliRunner

sys.path.append(os.path.join(os.path.dirname(__file__), "../scripts"))
from main import app

runner = CliRunner()

GROUP_NAME2 = "a-test-group"

def test_group_delete1() -> None:
    """Delete a test group which is a member of another group"""
    result = runner.invoke(app, ["group", "delete", GROUP_NAME2], input=["y", "y"])
    assert result.exit_code == 0
    assert "SUCCESS" in result.stdout
    assert "Delete group" in result.stdout
    assert "Really delete" in result.stdout

Description

I have a script which has a function for deleting a group: cli group delete <group_name>. Given delete actions are destructive, there is a need to require user input to verify the user does indeed wish to delete the group. However, groups can be a part of one or more other groups (nested groups) and can have more disruptive consequences if deleted without first addressing those relationships.

Rather than producing a different single message that the user is aware the group is a part of another group and to proceed with deletion, the CLI tool prompts the user a second time for input to ensure they really do want to delete the group (and by extension accept the consequents if they opt to move forward).

As a result of this, when attempting to write a valid typer test for this, I run into errors. It would be nice if the input variable within runner.invoke() could accept either a single string (as it is now) or an array of strings so that for other tools that have many user prompts in one command that these can be processed in sequence.

Thank you in advance for the consideration.

Operating System

macOS

Operating System Details

Sonoma 14.6

Typer Version

0.12.3

Python Version

Python 3.11.9

Additional Context

No response

[YuriiMotov]

You can pass multiple inputs in one string with \n separator:

    result = runner.invoke(app, ["group", "delete", GROUP_NAME2], input=("y\n" + "y\n"))

Full code:

import typer
from typer.testing import CliRunner

app = typer.Typer()


@app.command()
def delete(group: str):
    typer.confirm("Are you sure?", abort=True)
    if True:  # Group has sub-groups
        typer.confirm("This group has sub-groups. Are you really sure?", abort=True)
        typer.echo("Ok, deleted.")


@app.command()
def add(group: str):
    pass


if __name__ == "__main__":
    app()


def test_():
    runner = CliRunner()
    res = runner.invoke(app, ["delete", "GROUP_NAME2"], input=("y\n" + "y\n"))
    assert "Ok, deleted." in res.output