rebaseline_server: serve JSON from static file, rather than generating it live

gm/rebaseline_server/imagepairset_test.py

 #!/usr/bin/python
 
 """
 Copyright 2014 Google Inc.
 
 Use of this source code is governed by a BSD-style license that can be
 found in the LICENSE file.
 
 Test imagepairset.py
 """
 
 # System-level imports
 import unittest
 
 # Local imports
 import column
 import imagepair
 import imagepairset
 
 
 BASE_URL_1 = 'http://base/url/1'
 BASE_URL_2 = 'http://base/url/2'
+DIFF_BASE_URL = 'http://diff/base/url'
 IMAGEPAIR_1_AS_DICT = {
     imagepair.KEY__EXTRA_COLUMN_VALUES: {
         'builder': 'MyBuilder',
         'test': 'test1',
     },
     imagepair.KEY__IMAGE_A_URL: 'test1/1111.png',
     imagepair.KEY__IMAGE_B_URL: 'test1/1111.png',
     imagepair.KEY__IS_DIFFERENT: False,
 }
 IMAGEPAIR_2_AS_DICT = {
@@ skipping 76 matching lines @@
         'imageSets': {
             'imageA': {
                 'baseUrl': BASE_URL_1,
                 'description': SET_A_DESCRIPTION,
             },
             'imageB': {
                 'baseUrl': BASE_URL_1,
                 'description': SET_B_DESCRIPTION,
             },
             'diffs': {
-                'baseUrl': '/static/generated-images/diffs',
+                'baseUrl': DIFF_BASE_URL + '/diffs',
                 'description': 'color difference per channel',
             },
             'whiteDiffs': {
-                'baseUrl': '/static/generated-images/whitediffs',
+                'baseUrl': DIFF_BASE_URL + '/whitediffs',
                 'description': 'differing pixels in white',
             },
         },
     }
 
     image_pair_set = imagepairset.ImagePairSet(
-        descriptions=(SET_A_DESCRIPTION, SET_B_DESCRIPTION))
+        descriptions=(SET_A_DESCRIPTION, SET_B_DESCRIPTION),
+        diff_base_url=DIFF_BASE_URL)
     for image_pair in image_pairs:
       image_pair_set.add_image_pair(image_pair)
     # The 'builder' column header uses the default settings,
     # but the 'test' column header has manual adjustments.
     image_pair_set.set_column_header_factory(
         'test',
         column.ColumnHeaderFactory(
             header_text='which GM test',
             header_url='http://learn/about/gm/tests',
             is_filterable=True,
             is_sortable=False,
             include_values_and_counts=False))
     self.assertEqual(image_pair_set.as_dict(), expected_imageset_dict)
 
   def test_mismatched_base_url(self):
     """Confirms that mismatched base_urls will cause an exception."""
-    image_pair_set = imagepairset.ImagePairSet()
+    image_pair_set = imagepairset.ImagePairSet(
+        diff_base_url=DIFF_BASE_URL)
     image_pair_set.add_image_pair(
         MockImagePair(base_url=BASE_URL_1, dict_to_return=IMAGEPAIR_1_AS_DICT))
     image_pair_set.add_image_pair(
         MockImagePair(base_url=BASE_URL_1, dict_to_return=IMAGEPAIR_2_AS_DICT))
     with self.assertRaises(Exception):
       image_pair_set.add_image_pair(
           MockImagePair(base_url=BASE_URL_2,
                         dict_to_return=IMAGEPAIR_3_AS_DICT))
 
 
@@ skipping 14 matching lines @@
     return self._dict_to_return
 
 
 def main():
   suite = unittest.TestLoader().loadTestsFromTestCase(ImagePairSetTest)
   unittest.TextTestRunner(verbosity=2).run(suite)
 
 
 if __name__ == '__main__':
   main()