1 files changed, 84 insertions, 0 deletions
diff --git a/tests/DumpRenderTree/compare_layout_results.py b/tests/DumpRenderTree/compare_layout_results.py
new file mode 100644
index 0000000..4383dbb
--- /dev/null
+++ b/tests/DumpRenderTree/compare_layout_results.py
@@ -0,0 +1,84 @@
+#!/usr/bin/python
+"""
+Compares results of two webkit layout test runs and writes
+results to a file.
+"""
+
+import optparse
+import os
+
+def DiffResults(marker, new_results, old_results, diff_results, strip_reason):
+   """ Given two result files, generate diff and
+       write to diff_results file. All arguments are absolute paths
+       to files.
+   """
+   old_file = open(old_results, "r")
+   new_file = open(new_results, "r")
+   diff_file = open(diff_results, "a") 
+
+   # Read lines from each file
+   ndict = new_file.readlines()
+   cdict = old_file.readlines()
+
+   # Write marker to diff file
+   diff_file.writelines(marker + "\n")
+   diff_file.writelines("###############\n")
+
+   # Strip reason from result lines
+   if strip_reason is True:
+     for i in range(0, len(ndict)):
+       ndict[i] = ndict[i].split(' ')[0] + "\n"
+     for i in range(0, len(cdict)):
+       cdict[i] = cdict[i].split(' ')[0] + "\n"
+
+   # Find results in new_results missing in old_results
+   new_count=0
+   for line in ndict:
+     if line not in cdict:
+       diff_file.writelines("+ " + line)
+       new_count += 1
+
+   # Find results in old_results missing in new_results
+   missing_count=0
+   for line in cdict:
+     if line not in ndict:
+       diff_file.writelines("- " + line)
+       missing_count += 1
+
+   print marker + "  >>> New = " + str(new_count) + " , Missing = " + str(missing_count) 
+
+   diff_file.writelines("\n\n")
+
+   old_file.close()
+   new_file.close()
+   diff_file.close()
+   return
+
+def main(options, args):
+  results_dir = options.results_directory
+  ref_dir = options.ref_directory
+  if os.path.exists(results_dir + "/layout_tests_diff.txt"):
+    os.remove(results_dir + "/layout_tests_diff.txt")
+
+  files=["passed", "nontext", "crashed"]
+  for f in files:
+    DiffResults(f, results_dir + "layout_tests_" + f + ".txt",
+              ref_dir + "layout_tests_" + f + ".txt", results_dir + "layout_tests_diff.txt", False)
+
+  for f in ["failed"]:
+    DiffResults(f, results_dir + "layout_tests_" + f + ".txt",
+              ref_dir + "layout_tests_" + f + ".txt", results_dir + "layout_tests_diff.txt", True)
+
+if '__main__' == __name__:
+  option_parser = optparse.OptionParser()
+  option_parser.add_option("", "--ref-directory",
+                           default="results/",
+                           dest="ref_directory",
+                           help="directory name under which results are stored.")
+
+  option_parser.add_option("", "--results-directory",
+                           default="layout-test-results/",
+                           dest="results_directory",
+                           help="directory name under which results are stored.")
+  options, args = option_parser.parse_args()
+  main(options, args)