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100 lines
2.9 KiB
Python
100 lines
2.9 KiB
Python
"""Tests for the Application class."""
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import argparse
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import sys
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import mock
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import pytest
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from flake8.main import application as app
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def options(**kwargs):
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"""Generate argparse.Namespace for our Application."""
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kwargs.setdefault('verbose', 0)
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kwargs.setdefault('output_file', None)
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kwargs.setdefault('count', False)
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kwargs.setdefault('exit_zero', False)
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return argparse.Namespace(**kwargs)
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@pytest.fixture
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def application():
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"""Create an application."""
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return app.Application()
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@pytest.mark.parametrize(
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'result_count, catastrophic, exit_zero, value', [
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(0, False, False, False),
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(0, True, False, True),
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(2, False, False, True),
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(2, True, False, True),
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(0, True, True, True),
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(2, False, True, False),
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(2, True, True, True),
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]
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)
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def test_exit_does_raise(result_count, catastrophic, exit_zero, value,
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application):
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"""Verify Application.exit doesn't raise SystemExit."""
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application.result_count = result_count
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application.catastrophic_failure = catastrophic
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application.options = options(exit_zero=exit_zero)
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with pytest.raises(SystemExit) as excinfo:
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application.exit()
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assert excinfo.value.args[0] is value
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def test_warns_on_unknown_formatter_plugin_name(application):
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"""Verify we log a warning with an unfound plugin."""
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default = mock.Mock()
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execute = default.execute
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application.formatting_plugins = {
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'default': default,
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}
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with mock.patch.object(app.LOG, 'warning') as warning:
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assert execute is application.formatter_for('fake-plugin-name')
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assert warning.called is True
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assert warning.call_count == 1
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def test_returns_specified_plugin(application):
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"""Verify we get the plugin we want."""
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desired = mock.Mock()
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execute = desired.execute
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application.formatting_plugins = {
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'default': mock.Mock(),
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'desired': desired,
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}
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with mock.patch.object(app.LOG, 'warning') as warning:
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assert execute is application.formatter_for('desired')
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assert warning.called is False
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def test_prelim_opts_args(application):
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"""Verify we get sensible prelim opts and args."""
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opts = application.parse_preliminary_options(
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['--foo', '--verbose', 'src', 'setup.py', '--statistics', '--version'])
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assert opts.verbose
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def test_prelim_opts_ignore_help(application):
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"""Verify -h/--help is not handled."""
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# normally argparse would `SystemExit` on `--help`
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application.parse_preliminary_options(['--help', '-h'])
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def test_prelim_opts_handles_empty(application):
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"""Verify empty argv lists are handled correctly."""
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# this would set `.verbose` but we validate that it does not
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irrelevant_args = ['--verbose']
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with mock.patch.object(sys, 'argv', irrelevant_args):
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opts = application.parse_preliminary_options([])
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assert not opts.verbose
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