Add app for unique together testing

tests/test_project/app_unique_together/models.py

@@ -0,0 +1,9 @@
+from django.db import models
+
+
+class A(models.Model):
+    int_field = models.IntegerField()
+    char_field = models.CharField(max_length=255)
+
+    # class Meta:
+    #     unique_together = (("int_field", "char_field"),)