Add tests for new plugin manager.

tests/test_plugins.py

@@ -0,0 +1,162 @@
+import unittest
+import logging
+
+from sleekxmpp.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)