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import unittest
import logging
from slixmpp.plugins.base import PluginManager, BasePlugin, register_plugin
class A(BasePlugin):
name = 'a'
class B(BasePlugin):
name = 'b'
class C(BasePlugin):
name = 'c'
dependencies = set(['b', 'd'])
class D(BasePlugin):
name = 'd'
dependencies = set(['c'])
class E(BasePlugin):
name = 'e'
dependencies = set(['a', 'd'])
class F(BasePlugin):
name = 'f'
dependencies = set(['a', 'b'])
register_plugin(A)
register_plugin(B)
register_plugin(C)
register_plugin(D)
register_plugin(E)
register_plugin(F)
class TestPlugins(unittest.TestCase):
def test_enable(self):
"""Enable a single plugin."""
p = PluginManager(None)
events = []
def init(self):
events.append('init')
A.plugin_init = init
p.enable('a')
self.assertEqual(len(p), 1, "Wrong number of enabled plugins.")
self.assertEqual(events, ['init'], "Plugin init method not called.")
def test_disable(self):
"""Disable a single plugin."""
p = PluginManager(None)
events = []
def init(self):
events.append('init')
def end(self):
events.append('end')
A.plugin_init = init
A.plugin_end = end
p.enable('a')
p.disable('a')
self.assertEqual(len(p), 0, "Wrong number of enabled plugins.")
self.assertEqual(events, ['init', 'end'],
"Plugin lifecycle methods not called.")
def test_enable_dependencies(self):
"""Enable a plugin with acyclic dependencies."""
p = PluginManager(None)
events = []
A.plugin_init = lambda s: events.append('init_a')
B.plugin_init = lambda s: events.append('init_b')
p.enable('f')
self.assertEqual(len(p), 3, "Wrong number of enabled plugins.")
self.assertTrue('init_a' in events, "Dependency A not enabled.")
self.assertTrue('init_b' in events, "Dependency B not enabled.")
def test_enable_cyclic_dependencies(self):
"""Enable a plugin with cyclic dependencies."""
p = PluginManager(None)
events = []
B.plugin_init = lambda s: events.append('init_b')
C.plugin_init = lambda s: events.append('init_c')
D.plugin_init = lambda s: events.append('init_d')
p.enable('c')
self.assertEqual(len(p), 3, "Wrong number of enabled plugins.")
self.assertTrue('init_b' in events, "Dependency B not enabled.")
self.assertTrue('init_c' in events, "Dependency C not enabled.")
self.assertTrue('init_d' in events, "Dependency D not enabled.")
def test_disable_dependendents(self):
"""Disable a plugin with dependents."""
p = PluginManager(None)
events = []
A.plugin_end = lambda s: events.append('end_a')
B.plugin_end = lambda s: events.append('end_b')
F.plugin_end = lambda s: events.append('end_f')
p.enable('f')
p.disable('a')
self.assertEqual(len(p), 1, "Wrong number of enabled plugins.")
self.assertTrue('end_f' in events, "Dependent F not disabled.")
self.assertTrue('end_a' in events, "Plugin A not disabled.")
def test_disable_cyclic_dependents(self):
"""Disable a plugin with cyclic dependents."""
p = PluginManager(None)
events = []
B.plugin_end = lambda s: events.append('end_b')
C.plugin_end = lambda s: events.append('end_c')
D.plugin_end = lambda s: events.append('end_d')
p.enable('c')
p.disable('b')
self.assertEqual(len(p), 0, "Wrong number of enabled plugins.")
self.assertTrue('end_b' in events, "Plugin B not disabled.")
self.assertTrue('end_c' in events, "Dependent C not disabled.")
self.assertTrue('end_d' in events, "Dependent D not disabled.")
suite = unittest.TestLoader().loadTestsFromTestCase(TestPlugins)
if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG,
format='%(levelname)-8s %(message)s')
tests = unittest.TestSuite([suite])
unittest.TextTestRunner(verbosity=2).run(tests)
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