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"""Tests for the Application class."""
import optparse
import mock
import pytest
from flake8 import exceptions
from flake8.main import application as app
def options(**kwargs):
"""Generate optparse.Values for our Application."""
kwargs.setdefault('verbose', 0)
kwargs.setdefault('output_file', None)
kwargs.setdefault('count', False)
kwargs.setdefault('exit_zero', False)
return optparse.Values(kwargs)
@pytest.fixture
def mocked_application():
"""Create an application with a mocked OptionManager."""
with mock.patch('flake8.options.manager.OptionManager') as optionmanager:
optmgr = optionmanager.return_value = mock.Mock()
optmgr.parse_known_args.return_value = (options(), [])
application = app.Application()
return application
@pytest.mark.parametrize(
'result_count, catastrophic, exit_zero', [
(0, True, True),
(2, False, True),
(2, True, True),
]
)
def test_exit_does_not_raise(result_count, catastrophic, exit_zero,
mocked_application):
"""Verify Application.exit doesn't raise SystemExit."""
mocked_application.result_count = result_count
mocked_application.catastrophic_failure = catastrophic
mocked_application.options = options(exit_zero=exit_zero)
assert mocked_application.exit() is None
@pytest.mark.parametrize(
'result_count, catastrophic, exit_zero, value', [
(0, False, False, False),
(0, True, False, True),
(2, False, False, True),
(2, True, False, True),
]
)
def test_exit_does_raise(result_count, catastrophic, exit_zero, value,
mocked_application):
"""Verify Application.exit doesn't raise SystemExit."""
mocked_application.result_count = result_count
mocked_application.catastrophic_failure = catastrophic
mocked_application.options = options(exit_zero=exit_zero)
with pytest.raises(SystemExit) as excinfo:
mocked_application.exit()
assert excinfo.value.args[0] is value
def test_missing_default_formatter(mocked_application):
"""Verify we raise an ExecutionError when there's no default formatter."""
mocked_application.formatting_plugins = {}
with pytest.raises(exceptions.ExecutionError):
mocked_application.formatter_for('fake-plugin-name')
def test_warns_on_unknown_formatter_plugin_name(mocked_application):
"""Verify we log a warning with an unfound plugin."""
default = mock.Mock()
execute = default.execute
mocked_application.formatting_plugins = {
'default': default,
}
with mock.patch.object(app.LOG, 'warning') as warning:
assert execute is mocked_application.formatter_for('fake-plugin-name')
assert warning.called is True
assert warning.call_count == 1
def test_returns_specified_plugin(mocked_application):
"""Verify we get the plugin we want."""
desired = mock.Mock()
execute = desired.execute
mocked_application.formatting_plugins = {
'default': mock.Mock(),
'desired': desired,
}
with mock.patch.object(app.LOG, 'warning') as warning:
assert execute is mocked_application.formatter_for('desired')
assert warning.called is False
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