[soc2010/test-refactor] Converted force_insert_update to unittest. We have always been at war with doctests.

git-svn-id: http://code.djangoproject.com/svn/django/branches/soc2010/test-refactor@13395 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/force_insert_update/models.py

@@ -2,7 +2,7 @@
 Tests for forcing insert and update queries (instead of Django's normal
 automatic behaviour).
 """
-from django.db import models, transaction, IntegrityError
+from django.db import models
 
 class Counter(models.Model):
     name = models.CharField(max_length = 10)
@@ -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 +1,49 @@
+from django.test import TestCase
+
+from models import Counter, WithCustomPK
+from django.db import DatabaseError, IntegrityError
+
+class ForceInsertUpdateTestCase(TestCase):
+    def test_normal_case(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)
+
+    def test_update_and_insert_simultaneously(self):
+        # Won't work because force_update and force_insert are
+        # mutually exclusive
+        c = Counter.objects.create(name="one", value=1)
+        self.assertRaises(ValueError,
+                          c.save,
+                          force_insert=True, force_update=True)
+
+    def test_update_with_no_pk(self):
+        # 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)
+
+    def test_insert_duplicate_pk(self):
+        # Won't work because we can't insert a pk of the same value.
+        c = Counter.objects.create(name="one", value=1)
+        c.value = 2
+        self.assertRaises(IntegrityError,
+                          c.save,
+                          force_insert=True)
+
+    def test_nonexistent_update(self):
+        # 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)