typer/tests/test_annotated.py

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import typer
from typer.testing import CliRunner
from typing_extensions import Annotated
runner = CliRunner()
def test_annotated_argument_with_default():
app = typer.Typer()
@app.command()
def cmd(val: Annotated[int, typer.Argument()] = 0):
print(f"hello {val}")
result = runner.invoke(app)
assert result.exit_code == 0, result.output
assert "hello 0" in result.output
result = runner.invoke(app, ["42"])
assert result.exit_code == 0, result.output
assert "hello 42" in result.output
def test_annotated_argument_with_default_factory():
app = typer.Typer()
def make_string():
return "I made it"
@app.command()
def cmd(val: Annotated[str, typer.Argument(default_factory=make_string)]):
print(val)
result = runner.invoke(app)
assert result.exit_code == 0, result.output
assert "I made it" in result.output
result = runner.invoke(app, ["overridden"])
assert result.exit_code == 0, result.output
assert "overridden" in result.output
def test_annotated_option_with_argname_doesnt_mutate_multiple_calls():
app = typer.Typer()
@app.command()
def cmd(force: Annotated[bool, typer.Option("--force")] = False):
if force:
print("Forcing operation")
else:
print("Not forcing")
result = runner.invoke(app)
assert result.exit_code == 0, result.output
assert "Not forcing" in result.output
result = runner.invoke(app, ["--force"])
assert result.exit_code == 0, result.output
assert "Forcing operation" in result.output