1 files changed, 96 insertions, 0 deletions
diff --git a/parts/django/tests/regressiontests/signals_regress/tests.py b/parts/django/tests/regressiontests/signals_regress/tests.py
new file mode 100644
index 0000000..234893f
--- /dev/null
+++ b/parts/django/tests/regressiontests/signals_regress/tests.py
@@ -0,0 +1,96 @@
+import sys
+from StringIO import StringIO
+from django.test import TestCase
+
+from django.db import models
+from regressiontests.signals_regress.models import Author, Book
+
+signal_output = []
+
+def pre_save_test(signal, sender, instance, **kwargs):
+    signal_output.append('pre_save signal, %s' % instance)
+    if kwargs.get('raw'):
+        signal_output.append('Is raw')
+
+def post_save_test(signal, sender, instance, **kwargs):
+    signal_output.append('post_save signal, %s' % instance)
+    if 'created' in kwargs:
+        if kwargs['created']:
+            signal_output.append('Is created')
+        else:
+            signal_output.append('Is updated')
+    if kwargs.get('raw'):
+        signal_output.append('Is raw')
+
+def pre_delete_test(signal, sender, instance, **kwargs):
+    signal_output.append('pre_save signal, %s' % instance)
+    signal_output.append('instance.id is not None: %s' % (instance.id != None))
+
+def post_delete_test(signal, sender, instance, **kwargs):
+    signal_output.append('post_delete signal, %s' % instance)
+    signal_output.append('instance.id is not None: %s' % (instance.id != None))
+
+class SignalsRegressTests(TestCase):
+    """
+    Testing signals before/after saving and deleting.
+    """
+
+    def get_signal_output(self, fn, *args, **kwargs):
+        # Flush any existing signal output
+        global signal_output
+        signal_output = []
+        fn(*args, **kwargs)
+        return signal_output
+
+    def setUp(self):
+        # Save up the number of connected signals so that we can check at the end
+        # that all the signals we register get properly unregistered (#9989)
+        self.pre_signals = (len(models.signals.pre_save.receivers),
+                       len(models.signals.post_save.receivers),
+                       len(models.signals.pre_delete.receivers),
+                       len(models.signals.post_delete.receivers))
+
+        models.signals.pre_save.connect(pre_save_test)
+        models.signals.post_save.connect(post_save_test)
+        models.signals.pre_delete.connect(pre_delete_test)
+        models.signals.post_delete.connect(post_delete_test)
+
+    def tearDown(self):
+        models.signals.post_delete.disconnect(post_delete_test)
+        models.signals.pre_delete.disconnect(pre_delete_test)
+        models.signals.post_save.disconnect(post_save_test)
+        models.signals.pre_save.disconnect(pre_save_test)
+
+        # Check that all our signals got disconnected properly.
+        post_signals = (len(models.signals.pre_save.receivers),
+                        len(models.signals.post_save.receivers),
+                        len(models.signals.pre_delete.receivers),
+                        len(models.signals.post_delete.receivers))
+
+        self.assertEquals(self.pre_signals, post_signals)
+
+    def test_model_signals(self):
+        """ Model saves should throw some signals. """
+        a1 = Author(name='Neal Stephenson')
+        self.assertEquals(self.get_signal_output(a1.save), [
+            "pre_save signal, Neal Stephenson",
+            "post_save signal, Neal Stephenson",
+            "Is created"
+        ])
+
+        b1 = Book(name='Snow Crash')
+        self.assertEquals(self.get_signal_output(b1.save), [
+            "pre_save signal, Snow Crash",
+            "post_save signal, Snow Crash",
+            "Is created"
+        ])
+
+    def test_m2m_signals(self):
+        """ Assigning and removing to/from m2m shouldn't generate an m2m signal """
+
+        b1 = Book(name='Snow Crash')
+        self.get_signal_output(b1.save)
+        a1 = Author(name='Neal Stephenson')
+        self.get_signal_output(a1.save)
+        self.assertEquals(self.get_signal_output(setattr, b1, 'authors', [a1]), [])
+        self.assertEquals(self.get_signal_output(setattr, b1, 'authors', []), [])