[1.5.x] Fixed #5805 -- it is now possible to specify multi-column indexes. Thanks to jgelens for the original patch. Backport of 4285571c5a.

tests/regressiontests/introspection/tests.py

@@ -1,4 +1,4 @@
-from __future__ import absolute_import,unicode_literals
+from __future__ import absolute_import, unicode_literals
 
 from functools import update_wrapper
 
@@ -13,7 +13,7 @@ if connection.vendor == 'oracle':
 else:
     expectedFailureOnOracle = lambda f: f
 
-#
+
 # The introspection module is optional, so methods tested here might raise
 # NotImplementedError. This is perfectly acceptable behavior for the backend
 # in question, but the tests need to handle this without failing. Ideally we'd
@@ -23,7 +23,7 @@ else:
 # wrapper that ignores the exception.
 #
 # The metaclass is just for fun.
-#
+
 
 def ignore_not_implemented(func):
     def _inner(*args, **kwargs):
@@ -34,15 +34,16 @@ def ignore_not_implemented(func):
     update_wrapper(_inner, func)
     return _inner
 
+
 class IgnoreNotimplementedError(type):
     def __new__(cls, name, bases, attrs):
-        for k,v in attrs.items():
+        for k, v in attrs.items():
             if k.startswith('test'):
                 attrs[k] = ignore_not_implemented(v)
         return type.__new__(cls, name, bases, attrs)
 
-class IntrospectionTests(six.with_metaclass(IgnoreNotimplementedError, TestCase)):
 
+class IntrospectionTests(six.with_metaclass(IgnoreNotimplementedError, TestCase)):
     def test_table_names(self):
         tl = connection.introspection.table_names()
         self.assertEqual(tl, sorted(tl))
@@ -163,6 +164,7 @@ class IntrospectionTests(six.with_metaclass(IgnoreNotimplementedError, TestCase)
         self.assertNotIn('first_name', indexes)
         self.assertIn('id', indexes)
 
+
 def datatype(dbtype, description):
     """Helper to convert a data type into a string."""
     dt = connection.introspection.get_field_type(dbtype, description)