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"""Tests for flake8.plugins.manager.PluginManager."""
import mock
from flake8.plugins import manager
def create_entry_point_mock(name):
"""Create a mocked EntryPoint."""
ep = mock.Mock(spec=['name'])
ep.name = name
return ep
@mock.patch('pkg_resources.iter_entry_points')
def test_calls_pkg_resources_on_instantiation(iter_entry_points):
"""Verify that we call iter_entry_points when we create a manager."""
iter_entry_points.return_value = []
manager.PluginManager(namespace='testing.pkg_resources')
iter_entry_points.assert_called_once_with('testing.pkg_resources')
@mock.patch('pkg_resources.iter_entry_points')
def test_calls_pkg_resources_creates_plugins_automaticaly(iter_entry_points):
"""Verify that we create Plugins on instantiation."""
iter_entry_points.return_value = [
create_entry_point_mock('T100'),
create_entry_point_mock('T200'),
]
plugin_mgr = manager.PluginManager(namespace='testing.pkg_resources')
iter_entry_points.assert_called_once_with('testing.pkg_resources')
assert 'T100' in plugin_mgr.plugins
assert 'T200' in plugin_mgr.plugins
assert isinstance(plugin_mgr.plugins['T100'], manager.Plugin)
assert isinstance(plugin_mgr.plugins['T200'], manager.Plugin)
@mock.patch('pkg_resources.iter_entry_points')
def test_handles_mapping_functions_across_plugins(iter_entry_points):
"""Verify we can use the PluginManager call functions on all plugins."""
entry_point_mocks = [
create_entry_point_mock('T100'),
create_entry_point_mock('T200'),
]
iter_entry_points.return_value = entry_point_mocks
plugin_mgr = manager.PluginManager(namespace='testing.pkg_resources')
plugins = [plugin_mgr.plugins[name] for name in plugin_mgr.names]
assert list(plugin_mgr.map(lambda x: x)) == plugins
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