Added WagtailTestCase class with a couple of useful methods

wagtail/tests/utils.py

@@ -1,4 +1,6 @@
+from django.test import TestCase
 from django.contrib.auth.models import User
+from django.utils.six.moves.urllib.parse import urlparse, ParseResult
 
 # We need to make sure that we're using the same unittest library that Django uses internally
 # Otherwise, we get issues with the "SkipTest" and "ExpectedFailure" exceptions being recognised as errors
@@ -20,3 +22,26 @@ def login(client):
     client.login(username='test', password='password')
 
     return user
+
+
+class WagtailTestCase(TestCase):
+    def login(self):
+        login(self.client)
+
+    # From: https://github.com/django/django/blob/255449c1ee61c14778658caae8c430fa4d76afd6/django/contrib/auth/tests/test_views.py#L70-L85
+    def assertURLEqual(self, url, expected, parse_qs=False):
+        """
+        Given two URLs, make sure all their components (the ones given by
+        urlparse) are equal, only comparing components that are present in both
+        URLs.
+        If `parse_qs` is True, then the querystrings are parsed with QueryDict.
+        This is useful if you don't want the order of parameters to matter.
+        Otherwise, the query strings are compared as-is.
+        """
+        fields = ParseResult._fields
+
+        for attr, x, y in zip(fields, urlparse(url), urlparse(expected)):
+            if parse_qs and attr == 'query':
+                x, y = QueryDict(x), QueryDict(y)
+            if x and y and x != y:
+                self.fail("%r != %r (%s doesn't match)" % (url, expected, attr))