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import os
import sys
import pytest
import click
from click.testing import CliRunner
from click._compat import PY2, WIN
# Use the most reasonable io that users would use for the python version.
if PY2:
from cStringIO import StringIO as ReasonableBytesIO
else:
from io import BytesIO as ReasonableBytesIO
def test_runner():
@click.command()
def test():
i = click.get_binary_stream('stdin')
o = click.get_binary_stream('stdout')
while 1:
chunk = i.read(4096)
if not chunk:
break
o.write(chunk)
o.flush()
runner = CliRunner()
result = runner.invoke(test, input='Hello World!\n')
assert not result.exception
assert result.output == 'Hello World!\n'
runner = CliRunner(echo_stdin=True)
result = runner.invoke(test, input='Hello World!\n')
assert not result.exception
assert result.output == 'Hello World!\nHello World!\n'
def test_runner_with_stream():
@click.command()
def test():
i = click.get_binary_stream('stdin')
o = click.get_binary_stream('stdout')
while 1:
chunk = i.read(4096)
if not chunk:
break
o.write(chunk)
o.flush()
runner = CliRunner()
result = runner.invoke(test, input=ReasonableBytesIO(b'Hello World!\n'))
assert not result.exception
assert result.output == 'Hello World!\n'
runner = CliRunner(echo_stdin=True)
result = runner.invoke(test, input=ReasonableBytesIO(b'Hello World!\n'))
assert not result.exception
assert result.output == 'Hello World!\nHello World!\n'
def test_prompts():
@click.command()
@click.option('--foo', prompt=True)
def test(foo):
click.echo('foo=%s' % foo)
runner = CliRunner()
result = runner.invoke(test, input='wau wau\n')
assert not result.exception
assert result.output == 'Foo: wau wau\nfoo=wau wau\n'
@click.command()
@click.option('--foo', prompt=True, hide_input=True)
def test(foo):
click.echo('foo=%s' % foo)
runner = CliRunner()
result = runner.invoke(test, input='wau wau\n')
assert not result.exception
assert result.output == 'Foo: \nfoo=wau wau\n'
def test_getchar():
@click.command()
def continue_it():
click.echo(click.getchar())
runner = CliRunner()
result = runner.invoke(continue_it, input='y')
assert not result.exception
assert result.output == 'y\n'
def test_catch_exceptions():
class CustomError(Exception):
pass
@click.command()
def cli():
raise CustomError(1)
runner = CliRunner()
result = runner.invoke(cli)
assert isinstance(result.exception, CustomError)
assert type(result.exc_info) is tuple
assert len(result.exc_info) == 3
with pytest.raises(CustomError):
runner.invoke(cli, catch_exceptions=False)
CustomError = SystemExit
result = runner.invoke(cli)
assert result.exit_code == 1
@pytest.mark.skipif(WIN, reason='Test does not make sense on Windows.')
def test_with_color():
@click.command()
def cli():
click.secho('hello world', fg='blue')
runner = CliRunner()
result = runner.invoke(cli)
assert result.output == 'hello world\n'
assert not result.exception
result = runner.invoke(cli, color=True)
assert result.output == click.style('hello world', fg='blue') + '\n'
assert not result.exception
def test_with_color_but_pause_not_blocking():
@click.command()
def cli():
click.pause()
runner = CliRunner()
result = runner.invoke(cli, color=True)
assert not result.exception
assert result.output == ''
def test_exit_code_and_output_from_sys_exit():
# See issue #362
@click.command()
def cli_string():
click.echo('hello world')
sys.exit('error')
@click.command()
@click.pass_context
def cli_string_ctx_exit(ctx):
click.echo('hello world')
ctx.exit('error')
@click.command()
def cli_int():
click.echo('hello world')
sys.exit(1)
@click.command()
@click.pass_context
def cli_int_ctx_exit(ctx):
click.echo('hello world')
ctx.exit(1)
@click.command()
def cli_float():
click.echo('hello world')
sys.exit(1.0)
@click.command()
@click.pass_context
def cli_float_ctx_exit(ctx):
click.echo('hello world')
ctx.exit(1.0)
@click.command()
def cli_no_error():
click.echo('hello world')
runner = CliRunner()
result = runner.invoke(cli_string)
assert result.exit_code == 1
assert result.output == 'hello world\nerror\n'
result = runner.invoke(cli_string_ctx_exit)
assert result.exit_code == 1
assert result.output == 'hello world\nerror\n'
result = runner.invoke(cli_int)
assert result.exit_code == 1
assert result.output == 'hello world\n'
result = runner.invoke(cli_int_ctx_exit)
assert result.exit_code == 1
assert result.output == 'hello world\n'
result = runner.invoke(cli_float)
assert result.exit_code == 1
assert result.output == 'hello world\n1.0\n'
result = runner.invoke(cli_float_ctx_exit)
assert result.exit_code == 1
assert result.output == 'hello world\n1.0\n'
result = runner.invoke(cli_no_error)
assert result.exit_code == 0
assert result.output == 'hello world\n'
def test_env():
@click.command()
def cli_env():
click.echo('ENV=%s' % os.environ['TEST_CLICK_ENV'])
runner = CliRunner()
env_orig = dict(os.environ)
env = dict(env_orig)
assert 'TEST_CLICK_ENV' not in env
env['TEST_CLICK_ENV'] = 'some_value'
result = runner.invoke(cli_env, env=env)
assert result.exit_code == 0
assert result.output == 'ENV=some_value\n'
assert os.environ == env_orig
def test_stderr():
@click.command()
def cli_stderr():
click.echo("stdout")
click.echo("stderr", err=True)
runner = CliRunner(mix_stderr=False)
result = runner.invoke(cli_stderr)
assert result.output == 'stdout\n'
assert result.stdout == 'stdout\n'
assert result.stderr == 'stderr\n'
runner_mix = CliRunner(mix_stderr=True)
result_mix = runner_mix.invoke(cli_stderr)
assert result_mix.output == 'stdout\nstderr\n'
assert result_mix.stdout == 'stdout\nstderr\n'
with pytest.raises(ValueError):
result_mix.stderr
@pytest.mark.parametrize('args, expected_output', [
(None, 'bar\n'),
([], 'bar\n'),
('', 'bar\n'),
(['--foo', 'one two'], 'one two\n'),
('--foo "one two"', 'one two\n'),
])
def test_args(args, expected_output):
@click.command()
@click.option('--foo', default='bar')
def cli_args(foo):
click.echo(foo)
runner = CliRunner()
result = runner.invoke(cli_args, args=args)
assert result.exit_code == 0
assert result.output == expected_output
def test_setting_prog_name_in_extra():
@click.command()
def cli():
click.echo("ok")
runner = CliRunner()
result = runner.invoke(cli, prog_name="foobar")
assert not result.exception
assert result.output == 'ok\n'
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