CliRunner fails on app with added Click command

[epogrebnyak]

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Example Code

import click
import typer

app = typer.Typer()


@app.command()
def top():
    """
    Top level command, form Typer
    """
    print("The Typer app is at the top level")


@app.callback()
def callback():
    """
    Typer app, including Click subapp
    """


@click.command()
@click.option("--name", prompt="Your name", help="The person to greet.")
def hello(name):
    """Simple program that greets NAME for a total of COUNT times."""
    click.echo("Hello %s!" % name)


typer_click_object = typer.main.get_command(app)

typer_click_object.add_command(hello, "hello")

from typer.testing import CliRunner

runner = CliRunner()
runner.invoke(typer_click_object, ["hello", "--name", "Camila"])
print(runner)

"""
/home/codespace/.python/current/bin/python3 /workspaces/abacus/abacus/typer_cli/sample.py
Traceback (most recent call last):
  File "/workspaces/abacus/abacus/typer_cli/sample.py", line 36, in <module>
    runner.invoke(typer_click_object, ["hello", "--name", "Camila"])
  File "/home/codespace/.python/current/lib/python3.10/site-packages/typer/testing.py", line 20, in invoke
    use_cli = _get_command(app)
  File "/home/codespace/.python/current/lib/python3.10/site-packages/typer/main.py", line 341, in get_command
    if typer_instance._add_completion:
AttributeError: 'TyperGroup' object has no attribute '_add_completion'
"""

Description

• copy code from https://typer.tiangolo.com/tutorial/using-click/#including-a-click-app-in-a-typer-app
• create and invoke CliRunner for typer_click_object
• expected to run typer_click_object
• fails with AttributeError

Operating System

Windows

Operating System Details

No response

Typer Version

0.9.0

Python Version

Python 3.10.9

Additional Context

No response

[svlandeg]

Hi!

For this example code to work, you'll actually need to use

from click.testing import CliRunner

That will give you the required output:

 Usage: callback [OPTIONS] COMMAND [ARGS]...                                   
                                                                               
 Typer app, including Click subapp                                             
                                                                               
┌─ Options ───────────────────────────────────────────────────────────────────┐
│ --install-completion          Install completion for the current shell.     │
│ --show-completion             Show completion for the current shell, to     │
│                               copy it or customize the installation.        │
│ --help                        Show this message and exit.                   │
└─────────────────────────────────────────────────────────────────────────────┘
┌─ Commands ──────────────────────────────────────────────────────────────────┐
│ hello   Simple program that greets NAME for a total of COUNT times.         │
│ top     Top level command, form Typer                                       │
└─────────────────────────────────────────────────────────────────────────────┘

You can see the implementation of this example here, and its unit tests checking this behaviour here - that might further clarify things!