python-click/tests/test_basic.py
2022-11-30 09:52:01 +01:00

576 lines
15 KiB
Python

import os
from itertools import chain
import pytest
import click
def test_basic_functionality(runner):
@click.command()
def cli():
"""Hello World!"""
click.echo("I EXECUTED")
result = runner.invoke(cli, ["--help"])
assert not result.exception
assert "Hello World!" in result.output
assert "Show this message and exit." in result.output
assert result.exit_code == 0
assert "I EXECUTED" not in result.output
result = runner.invoke(cli, [])
assert not result.exception
assert "I EXECUTED" in result.output
assert result.exit_code == 0
def test_repr():
@click.command()
def command():
pass
@click.group()
def group():
pass
@group.command()
def subcommand():
pass
assert repr(command) == "<Command command>"
assert repr(group) == "<Group group>"
assert repr(subcommand) == "<Command subcommand>"
def test_return_values():
@click.command()
def cli():
return 42
with cli.make_context("foo", []) as ctx:
rv = cli.invoke(ctx)
assert rv == 42
def test_basic_group(runner):
@click.group()
def cli():
"""This is the root."""
click.echo("ROOT EXECUTED")
@cli.command()
def subcommand():
"""This is a subcommand."""
click.echo("SUBCOMMAND EXECUTED")
result = runner.invoke(cli, ["--help"])
assert not result.exception
assert "COMMAND [ARGS]..." in result.output
assert "This is the root" in result.output
assert "This is a subcommand." in result.output
assert result.exit_code == 0
assert "ROOT EXECUTED" not in result.output
result = runner.invoke(cli, ["subcommand"])
assert not result.exception
assert result.exit_code == 0
assert "ROOT EXECUTED" in result.output
assert "SUBCOMMAND EXECUTED" in result.output
def test_group_commands_dict(runner):
"""A Group can be built with a dict of commands."""
@click.command()
def sub():
click.echo("sub", nl=False)
cli = click.Group(commands={"other": sub})
result = runner.invoke(cli, ["other"])
assert result.output == "sub"
def test_group_from_list(runner):
"""A Group can be built with a list of commands."""
@click.command()
def sub():
click.echo("sub", nl=False)
cli = click.Group(commands=[sub])
result = runner.invoke(cli, ["sub"])
assert result.output == "sub"
@pytest.mark.parametrize(
("args", "expect"),
[
([], "S:[no value]"),
(["--s=42"], "S:[42]"),
(["--s"], "Error: Option '--s' requires an argument."),
(["--s="], "S:[]"),
(["--s=\N{SNOWMAN}"], "S:[\N{SNOWMAN}]"),
],
)
def test_string_option(runner, args, expect):
@click.command()
@click.option("--s", default="no value")
def cli(s):
click.echo(f"S:[{s}]")
result = runner.invoke(cli, args)
assert expect in result.output
if expect.startswith("Error:"):
assert result.exception is not None
else:
assert result.exception is None
@pytest.mark.parametrize(
("args", "expect"),
[
([], "I:[84]"),
(["--i=23"], "I:[46]"),
(["--i=x"], "Error: Invalid value for '--i': 'x' is not a valid integer."),
],
)
def test_int_option(runner, args, expect):
@click.command()
@click.option("--i", default=42)
def cli(i):
click.echo(f"I:[{i * 2}]")
result = runner.invoke(cli, args)
assert expect in result.output
if expect.startswith("Error:"):
assert result.exception is not None
else:
assert result.exception is None
@pytest.mark.parametrize(
("args", "expect"),
[
([], "U:[ba122011-349f-423b-873b-9d6a79c688ab]"),
(
["--u=821592c1-c50e-4971-9cd6-e89dc6832f86"],
"U:[821592c1-c50e-4971-9cd6-e89dc6832f86]",
),
(["--u=x"], "Error: Invalid value for '--u': 'x' is not a valid UUID."),
],
)
def test_uuid_option(runner, args, expect):
@click.command()
@click.option(
"--u", default="ba122011-349f-423b-873b-9d6a79c688ab", type=click.UUID
)
def cli(u):
click.echo(f"U:[{u}]")
result = runner.invoke(cli, args)
assert expect in result.output
if expect.startswith("Error:"):
assert result.exception is not None
else:
assert result.exception is None
@pytest.mark.parametrize(
("args", "expect"),
[
([], "F:[42.0]"),
("--f=23.5", "F:[23.5]"),
("--f=x", "Error: Invalid value for '--f': 'x' is not a valid float."),
],
)
def test_float_option(runner, args, expect):
@click.command()
@click.option("--f", default=42.0)
def cli(f):
click.echo(f"F:[{f}]")
result = runner.invoke(cli, args)
assert expect in result.output
if expect.startswith("Error:"):
assert result.exception is not None
else:
assert result.exception is None
@pytest.mark.parametrize("default", [True, False])
@pytest.mark.parametrize(
("args", "expect"), [(["--on"], True), (["--off"], False), ([], None)]
)
def test_boolean_switch(runner, default, args, expect):
@click.command()
@click.option("--on/--off", default=default)
def cli(on):
return on
if expect is None:
expect = default
result = runner.invoke(cli, args, standalone_mode=False)
assert result.return_value is expect
@pytest.mark.parametrize("default", [True, False])
@pytest.mark.parametrize(("args", "expect"), [(["--f"], True), ([], False)])
def test_boolean_flag(runner, default, args, expect):
@click.command()
@click.option("--f", is_flag=True, default=default)
def cli(f):
return f
if default:
expect = not expect
result = runner.invoke(cli, args, standalone_mode=False)
assert result.return_value is expect
@pytest.mark.parametrize(
("value", "expect"),
chain(
((x, "True") for x in ("1", "true", "t", "yes", "y", "on")),
((x, "False") for x in ("0", "false", "f", "no", "n", "off")),
),
)
def test_boolean_conversion(runner, value, expect):
@click.command()
@click.option("--flag", type=bool)
def cli(flag):
click.echo(flag, nl=False)
result = runner.invoke(cli, ["--flag", value])
assert result.output == expect
result = runner.invoke(cli, ["--flag", value.title()])
assert result.output == expect
def test_file_option(runner):
@click.command()
@click.option("--file", type=click.File("w"))
def input(file):
file.write("Hello World!\n")
@click.command()
@click.option("--file", type=click.File("r"))
def output(file):
click.echo(file.read())
with runner.isolated_filesystem():
result_in = runner.invoke(input, ["--file=example.txt"])
result_out = runner.invoke(output, ["--file=example.txt"])
assert not result_in.exception
assert result_in.output == ""
assert not result_out.exception
assert result_out.output == "Hello World!\n\n"
def test_file_lazy_mode(runner):
do_io = False
@click.command()
@click.option("--file", type=click.File("w"))
def input(file):
if do_io:
file.write("Hello World!\n")
@click.command()
@click.option("--file", type=click.File("r"))
def output(file):
pass
with runner.isolated_filesystem():
os.mkdir("example.txt")
do_io = True
result_in = runner.invoke(input, ["--file=example.txt"])
assert result_in.exit_code == 1
do_io = False
result_in = runner.invoke(input, ["--file=example.txt"])
assert result_in.exit_code == 0
result_out = runner.invoke(output, ["--file=example.txt"])
assert result_out.exception
@click.command()
@click.option("--file", type=click.File("w", lazy=False))
def input_non_lazy(file):
file.write("Hello World!\n")
with runner.isolated_filesystem():
os.mkdir("example.txt")
result_in = runner.invoke(input_non_lazy, ["--file=example.txt"])
assert result_in.exit_code == 2
assert "Invalid value for '--file': 'example.txt'" in result_in.output
def test_path_option(runner):
@click.command()
@click.option("-O", type=click.Path(file_okay=False, exists=True, writable=True))
def write_to_dir(o):
with open(os.path.join(o, "foo.txt"), "wb") as f:
f.write(b"meh\n")
with runner.isolated_filesystem():
os.mkdir("test")
result = runner.invoke(write_to_dir, ["-O", "test"])
assert not result.exception
with open("test/foo.txt", "rb") as f:
assert f.read() == b"meh\n"
result = runner.invoke(write_to_dir, ["-O", "test/foo.txt"])
assert "is a file" in result.output
@click.command()
@click.option("-f", type=click.Path(exists=True))
def showtype(f):
click.echo(f"is_file={os.path.isfile(f)}")
click.echo(f"is_dir={os.path.isdir(f)}")
with runner.isolated_filesystem():
result = runner.invoke(showtype, ["-f", "xxx"])
assert "does not exist" in result.output
result = runner.invoke(showtype, ["-f", "."])
assert "is_file=False" in result.output
assert "is_dir=True" in result.output
@click.command()
@click.option("-f", type=click.Path())
def exists(f):
click.echo(f"exists={os.path.exists(f)}")
with runner.isolated_filesystem():
result = runner.invoke(exists, ["-f", "xxx"])
assert "exists=False" in result.output
result = runner.invoke(exists, ["-f", "."])
assert "exists=True" in result.output
def test_choice_option(runner):
@click.command()
@click.option("--method", type=click.Choice(["foo", "bar", "baz"]))
def cli(method):
click.echo(method)
result = runner.invoke(cli, ["--method=foo"])
assert not result.exception
assert result.output == "foo\n"
result = runner.invoke(cli, ["--method=meh"])
assert result.exit_code == 2
assert (
"Invalid value for '--method': 'meh' is not one of 'foo', 'bar', 'baz'."
in result.output
)
result = runner.invoke(cli, ["--help"])
assert "--method [foo|bar|baz]" in result.output
def test_choice_argument(runner):
@click.command()
@click.argument("method", type=click.Choice(["foo", "bar", "baz"]))
def cli(method):
click.echo(method)
result = runner.invoke(cli, ["foo"])
assert not result.exception
assert result.output == "foo\n"
result = runner.invoke(cli, ["meh"])
assert result.exit_code == 2
assert (
"Invalid value for '{foo|bar|baz}': 'meh' is not one of 'foo',"
" 'bar', 'baz'." in result.output
)
result = runner.invoke(cli, ["--help"])
assert "{foo|bar|baz}" in result.output
def test_datetime_option_default(runner):
@click.command()
@click.option("--start_date", type=click.DateTime())
def cli(start_date):
click.echo(start_date.strftime("%Y-%m-%dT%H:%M:%S"))
result = runner.invoke(cli, ["--start_date=2015-09-29"])
assert not result.exception
assert result.output == "2015-09-29T00:00:00\n"
result = runner.invoke(cli, ["--start_date=2015-09-29T09:11:22"])
assert not result.exception
assert result.output == "2015-09-29T09:11:22\n"
result = runner.invoke(cli, ["--start_date=2015-09"])
assert result.exit_code == 2
assert (
"Invalid value for '--start_date': '2015-09' does not match the formats"
" '%Y-%m-%d', '%Y-%m-%dT%H:%M:%S', '%Y-%m-%d %H:%M:%S'."
) in result.output
result = runner.invoke(cli, ["--help"])
assert (
"--start_date [%Y-%m-%d|%Y-%m-%dT%H:%M:%S|%Y-%m-%d %H:%M:%S]" in result.output
)
def test_datetime_option_custom(runner):
@click.command()
@click.option("--start_date", type=click.DateTime(formats=["%A %B %d, %Y"]))
def cli(start_date):
click.echo(start_date.strftime("%Y-%m-%dT%H:%M:%S"))
result = runner.invoke(cli, ["--start_date=Wednesday June 05, 2010"])
assert not result.exception
assert result.output == "2010-06-05T00:00:00\n"
def test_required_option(runner):
@click.command()
@click.option("--foo", required=True)
def cli(foo):
click.echo(foo)
result = runner.invoke(cli, [])
assert result.exit_code == 2
assert "Missing option '--foo'" in result.output
def test_evaluation_order(runner):
called = []
def memo(ctx, param, value):
called.append(value)
return value
@click.command()
@click.option("--missing", default="missing", is_eager=False, callback=memo)
@click.option("--eager-flag1", flag_value="eager1", is_eager=True, callback=memo)
@click.option("--eager-flag2", flag_value="eager2", is_eager=True, callback=memo)
@click.option("--eager-flag3", flag_value="eager3", is_eager=True, callback=memo)
@click.option("--normal-flag1", flag_value="normal1", is_eager=False, callback=memo)
@click.option("--normal-flag2", flag_value="normal2", is_eager=False, callback=memo)
@click.option("--normal-flag3", flag_value="normal3", is_eager=False, callback=memo)
def cli(**x):
pass
result = runner.invoke(
cli,
[
"--eager-flag2",
"--eager-flag1",
"--normal-flag2",
"--eager-flag3",
"--normal-flag3",
"--normal-flag3",
"--normal-flag1",
"--normal-flag1",
],
)
assert not result.exception
assert called == [
"eager2",
"eager1",
"eager3",
"normal2",
"normal3",
"normal1",
"missing",
]
def test_hidden_option(runner):
@click.command()
@click.option("--nope", hidden=True)
def cli(nope):
click.echo(nope)
result = runner.invoke(cli, ["--help"])
assert result.exit_code == 0
assert "--nope" not in result.output
def test_hidden_command(runner):
@click.group()
def cli():
pass
@cli.command(hidden=True)
def nope():
pass
result = runner.invoke(cli, ["--help"])
assert result.exit_code == 0
assert "nope" not in result.output
def test_hidden_group(runner):
@click.group()
def cli():
pass
@cli.group(hidden=True)
def subgroup():
pass
@subgroup.command()
def nope():
pass
result = runner.invoke(cli, ["--help"])
assert result.exit_code == 0
assert "subgroup" not in result.output
assert "nope" not in result.output
def test_summary_line(runner):
@click.group()
def cli():
pass
@cli.command()
def cmd():
"""
Summary line without period
Here is a sentence. And here too.
"""
pass
result = runner.invoke(cli, ["--help"])
assert "Summary line without period" in result.output
assert "Here is a sentence." not in result.output
def test_help_invalid_default(runner):
cli = click.Command(
"cli",
params=[
click.Option(
["-a"],
type=click.Path(exists=True),
default="not found",
show_default=True,
),
],
)
result = runner.invoke(cli, ["--help"])
assert result.exit_code == 0
assert "default: not found" in result.output