[1.2.X] Migrated the force_insert_update tests. Thanks to Alex Gaynor.

Backport of r13782 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@13799 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/force_insert_update/models.py

@@ -11,54 +11,3 @@ class Counter(models.Model):
 class WithCustomPK(models.Model):
     name = models.IntegerField(primary_key=True)
     value = models.IntegerField()
-
-__test__ = {"API_TESTS": """
->>> c = Counter.objects.create(name="one", value=1)
-
-# The normal case
->>> c.value = 2
->>> c.save()
-
-# Same thing, via an update
->>> c.value = 3
->>> c.save(force_update=True)
-
-# Won't work because force_update and force_insert are mutually exclusive
->>> c.value = 4
->>> c.save(force_insert=True, force_update=True)
-Traceback (most recent call last):
-...
-ValueError: Cannot force both insert and updating in model saving.
-
-# Try to update something that doesn't have a primary key in the first place.
->>> c1 = Counter(name="two", value=2)
->>> c1.save(force_update=True)
-Traceback (most recent call last):
-...
-ValueError: Cannot force an update in save() with no primary key.
-
->>> c1.save(force_insert=True)
-
-# Won't work because we can't insert a pk of the same value.
->>> sid = transaction.savepoint()
->>> c.value = 5
->>> try:
-...     c.save(force_insert=True)
-... except Exception, e:
-...     if isinstance(e, IntegrityError):
-...         print "Pass"
-...     else:
-...         print "Fail with %s" % type(e)
-Pass
->>> transaction.savepoint_rollback(sid)
-
-# Trying to update should still fail, even with manual primary keys, if the
-# data isn't in the database already.
->>> obj = WithCustomPK(name=1, value=1)
->>> obj.save(force_update=True)
-Traceback (most recent call last):
-...
-DatabaseError: ...
-
-"""
-}

tests/modeltests/force_insert_update/tests.py

@@ -0,0 +1,38 @@
+from django.db import transaction, IntegrityError, DatabaseError
+from django.test import TestCase
+
+from models import Counter, WithCustomPK
+
+
+class ForceTests(TestCase):
+    def test_force_update(self):
+        c = Counter.objects.create(name="one", value=1)
+        # The normal case
+
+        c.value = 2
+        c.save()
+        # Same thing, via an update
+        c.value = 3
+        c.save(force_update=True)
+
+        # Won't work because force_update and force_insert are mutually
+        # exclusive
+        c.value = 4
+        self.assertRaises(ValueError, c.save, force_insert=True, force_update=True)
+
+        # Try to update something that doesn't have a primary key in the first
+        # place.
+        c1 = Counter(name="two", value=2)
+        self.assertRaises(ValueError, c1.save, force_update=True)
+        c1.save(force_insert=True)
+
+        # Won't work because we can't insert a pk of the same value.
+        sid = transaction.savepoint()
+        c.value = 5
+        self.assertRaises(IntegrityError, c.save, force_insert=True)
+        transaction.savepoint_rollback(sid)
+
+        # Trying to update should still fail, even with manual primary keys, if
+        # the data isn't in the database already.
+        obj = WithCustomPK(name=1, value=1)
+        self.assertRaises(DatabaseError, obj.save, force_update=True)