rebaseline_server: create ImagePairSet-- holds a number of ImagePairs to examine

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'
+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 = {
+    imagepair.KEY__DIFFERENCE_DATA: {
+        'maxDiffPerChannel': [1, 2, 3],
+        'numDifferingPixels': 111,
+        'percentDifferingPixels': 22.222,
+        'weightedDiffMeasure': 33.333,
+    },
+    imagepair.KEY__EXTRA_COLUMN_VALUES: {
+        'builder': 'MyBuilder',
+        'test': 'test2',
+    },
+    imagepair.KEY__IMAGE_A_URL: 'test2/2222.png',
+    imagepair.KEY__IMAGE_B_URL: 'test2/22223.png',
+    imagepair.KEY__IS_DIFFERENT: True,
+}
+IMAGEPAIR_3_AS_DICT = {
+    imagepair.KEY__DIFFERENCE_DATA: {
+        'maxDiffPerChannel': [4, 5, 6],
+        'numDifferingPixels': 111,
+        'percentDifferingPixels': 44.444,
+        'weightedDiffMeasure': 33.333,
+    },
+    imagepair.KEY__EXPECTATIONS_DATA: {
+        'bugs': [1001, 1002],
+        'ignoreFailure': True,
+    },
+    imagepair.KEY__EXTRA_COLUMN_VALUES: {
+        'builder': 'MyBuilder',
+        'test': 'test3',
+    },
+    imagepair.KEY__IMAGE_A_URL: 'test3/3333.png',
+    imagepair.KEY__IMAGE_B_URL: 'test3/33334.png',
+    imagepair.KEY__IS_DIFFERENT: True,
+}
+SET_A_DESCRIPTION = 'expectations'
+SET_B_DESCRIPTION = 'actuals'
+
+
+class ImagePairSetTest(unittest.TestCase):
+
+  def setUp(self):
+    self.maxDiff = None  # do not truncate diffs when tests fail
+
+  def shortDescription(self):
+    """Tells unittest framework to not print docstrings for test cases."""
+    return None
+
+  def test_success(self):
+    """Assembles some ImagePairs into an ImagePairSet, and validates results.
+    """
+    image_pairs = [
+        MockImagePair(base_url=BASE_URL_1, dict_to_return=IMAGEPAIR_1_AS_DICT),
+        MockImagePair(base_url=BASE_URL_1, dict_to_return=IMAGEPAIR_2_AS_DICT),
+        MockImagePair(base_url=BASE_URL_1, dict_to_return=IMAGEPAIR_3_AS_DICT),
+    ]
+    expected_imageset_dict = {
+        'columnHeaders': {
+            'builder': {
+                'headerText': 'builder',
+                'isFilterable': True,
+                'isSortable': True,
+                'valuesAndCounts': {
+                    'MyBuilder': 3
+                },
+            },
+            'test': {
+                'headerText': 'which GM test',
+                'headerUrl': 'http://learn/about/gm/tests',
+                'isFilterable': True,
+                'isSortable': False,
+            },
+        },
+        'imagePairs': [
+            IMAGEPAIR_1_AS_DICT,
+            IMAGEPAIR_2_AS_DICT,
+            IMAGEPAIR_3_AS_DICT,
+        ],
+        'imageSets': [
+            {
+                'baseUrl': BASE_URL_1,
+                'description': SET_A_DESCRIPTION,
+            },
+            {
+                'baseUrl': BASE_URL_1,
+                'description': SET_B_DESCRIPTION,
+            },
+        ],
+    }
+
+    image_pair_set = imagepairset.ImagePairSet(
+        descriptions=(SET_A_DESCRIPTION, SET_B_DESCRIPTION))
+    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.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))
+
+
+class MockImagePair(object):
+  """Mock ImagePair object, which will return canned results."""
+  def __init__(self, base_url, dict_to_return):
+    """
+    Args:
+      base_url: base_url attribute for this object
+      dict_to_return: dictionary to return from as_dict()
+    """
+    self.base_url = base_url
+    self.extra_columns_dict = dict_to_return.get(
+        imagepair.KEY__EXTRA_COLUMN_VALUES, None)
+    self._dict_to_return = dict_to_return
+
+  def as_dict(self):
+    return self._dict_to_return
+
+
+def main():
+  suite = unittest.TestLoader().loadTestsFromTestCase(ImagePairSetTest)
+  unittest.TextTestRunner(verbosity=2).run(suite)
+
+
+if __name__ == '__main__':
+  main()