1 files changed, 58 insertions, 0 deletions
diff --git a/tests/modeltests/validation/test_unique.py b/tests/modeltests/validation/test_unique.py
new file mode 100644
index 0000000000..cbb56aa8f5
--- /dev/null
+++ b/tests/modeltests/validation/test_unique.py
@@ -0,0 +1,58 @@
+import unittest
+from django.conf import settings
+from django.db import connection
+from models import CustomPKModel, UniqueTogetherModel, UniqueFieldsModel, UniqueForDateModel, ModelToValidate
+
+
+class GetUniqueCheckTests(unittest.TestCase):
+    def test_unique_fields_get_collected(self):
+        m = UniqueFieldsModel()
+        self.assertEqual(
+            ([('id',), ('unique_charfield',), ('unique_integerfield',)], []),
+            m._get_unique_checks()
+        )
+
+    def test_unique_together_gets_picked_up(self):
+        m = UniqueTogetherModel()
+        self.assertEqual(
+            ([('ifield', 'cfield',),('ifield', 'efield'), ('id',), ], []),
+            m._get_unique_checks()
+        )
+
+    def test_primary_key_is_considered_unique(self):
+        m = CustomPKModel()
+        self.assertEqual(([('my_pk_field',)], []), m._get_unique_checks())
+
+    def test_unique_for_date_gets_picked_up(self):
+        m = UniqueForDateModel()
+        self.assertEqual((
+                [('id',)],
+                [('date', 'count', 'start_date'), ('year', 'count', 'end_date'), ('month', 'order', 'end_date')]
+            ), m._get_unique_checks()
+        )
+
+class PerformUniqueChecksTest(unittest.TestCase):
+    def setUp(self):
+        # Set debug to True to gain access to connection.queries.
+        self._old_debug, settings.DEBUG = settings.DEBUG, True
+        super(PerformUniqueChecksTest, self).setUp()
+
+    def tearDown(self):
+        # Restore old debug value.
+        settings.DEBUG = self._old_debug
+        super(PerformUniqueChecksTest, self).tearDown()
+
+    def test_primary_key_unique_check_performed_when_adding(self):
+        """Regression test for #12132"""
+        l = len(connection.queries)
+        mtv = ModelToValidate(number=10, name='Some Name')
+        setattr(mtv, '_adding', True)
+        mtv.full_validate()
+        self.assertEqual(l+1, len(connection.queries))
+
+    def test_primary_key_unique_check_not_performed_when_not_adding(self):
+        """Regression test for #12132"""
+        l = len(connection.queries)
+        mtv = ModelToValidate(number=10, name='Some Name')
+        mtv.full_validate()
+        self.assertEqual(l, len(connection.queries))