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|
""" Tests for the plugin manager. """
# Standard library imports.
import unittest
# Enthought library imports.
from enthought.envisage.api import Plugin, PluginManager
from enthought.traits.api import Bool
class SimplePlugin(Plugin):
""" A simple plugin. """
#### 'SimplePlugin' interface #############################################
started = Bool(False)
stopped = Bool(False)
###########################################################################
# 'IPlugin' interface.
###########################################################################
def start(self):
""" Start the plugin. """
self.started = True
self.stopped = False
return
def stop(self):
""" Stop the plugin. """
self.started = False
self.stopped = True
return
class BadPlugin(Plugin):
""" A plugin that just causes trouble ;^). """
###########################################################################
# 'IPlugin' interface.
###########################################################################
def start(self):
""" Start the plugin. """
raise 1/0
def stop(self):
""" Stop the plugin. """
raise 1/0
class PluginManagerTestCase(unittest.TestCase):
""" Tests for the plugin manager. """
###########################################################################
# 'TestCase' interface.
###########################################################################
def setUp(self):
""" Prepares the test fixture before each test method is called. """
return
def tearDown(self):
""" Called immediately after each test method has been called. """
return
###########################################################################
# Tests.
###########################################################################
def test_get_plugin(self):
""" get plugin """
simple_plugin = SimplePlugin()
plugin_manager = PluginManager(plugins=[simple_plugin])
# Get the plugin.
plugin = plugin_manager.get_plugin(simple_plugin.id)
self.assertEqual(plugin, simple_plugin)
# Try to get a non-existent plugin.
self.assertEqual(None, plugin_manager.get_plugin('bogus'))
return
## def test_get_plugins(self):
## """ get plugins """
## simple_plugin = SimplePlugin()
## plugin_manager = PluginManager(plugins=[simple_plugin])
## # Get the plugin.
## plugins = plugin_manager.get_plugins()
## self.assertEqual([simple_plugin], plugins)
## # Mess with the list.
## plugins.append(BadPlugin())
## # Make sure we didn't affect the plugin manager.
## plugins = plugin_manager.get_plugins()
## self.assertEqual([simple_plugin], plugins)
## return
def test_iteration_over_plugins(self):
""" iteration over plugins """
simple_plugin = SimplePlugin()
bad_plugin = BadPlugin()
plugin_manager = PluginManager(plugins=[simple_plugin, bad_plugin])
# Iterate over the plugin manager's plugins.
plugins = []
for plugin in plugin_manager:
plugins.append(plugin)
self.assertEqual([simple_plugin, bad_plugin], plugins)
return
def test_start_and_stop(self):
""" start and stop """
simple_plugin = SimplePlugin()
plugin_manager = PluginManager(plugins=[simple_plugin])
# Start the plugin manager. This starts all of the plugin manager's
# plugins.
plugin_manager.start()
# Make sure the plugin was started.
self.assertEqual(True, simple_plugin.started)
# Stop the plugin manager. This stops all of the plugin manager's
# plugins.
plugin_manager.stop()
# Make sure the plugin was stopped.
self.assertEqual(True, simple_plugin.stopped)
return
def test_start_and_stop_errors(self):
""" start and stop errors """
simple_plugin = SimplePlugin()
bad_plugin = BadPlugin()
plugin_manager = PluginManager(plugins=[simple_plugin, bad_plugin])
# Start the plugin manager. This starts all of the plugin manager's
# plugins.
self.failUnlessRaises(ZeroDivisionError, plugin_manager.start)
# Stop the plugin manager. This stops all of the plugin manager's
# plugins.
self.failUnlessRaises(ZeroDivisionError, plugin_manager.stop)
# Try to start a non-existent plugin.
self.failUnlessRaises(
SystemError, plugin_manager.start_plugin, plugin_id='bogus'
)
# Try to stop a non-existent plugin.
self.failUnlessRaises(
SystemError, plugin_manager.stop_plugin, plugin_id='bogus'
)
return
# Entry point for stand-alone testing.
if __name__ == '__main__':
unittest.main()
#### EOF ######################################################################
|
