Ensures that the gold output directory exists

testing/tools/gold.py

 # Copyright 2015 The PDFium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 import json
 import os
 import shlex
 import shutil
 
@@ skipping 49 matching lines @@
                is used to set the top level fields in the output JSON file.
     keyStr is a string with space separated key/value pairs that
                is used to set the 'key' field in the output JSON file.
     """
     self._source_type = source_type
     self._properties = self._parseKeyValuePairs(propertiesStr)
     self._properties["key"] = self._parseKeyValuePairs(keyStr)
     self._results =  []
     self._outputDir = outputDir
 
+    # make sure the output directory exists.
+    if not os.path.exists(outputDir):
+      os.makedirs(outputDir)
+
   def AddTestResult(self, testName, md5Hash, outputImagePath):
     # Copy the image to <output_dir>/<md5Hash>.<image_extension>
     imgExt = os.path.splitext(outputImagePath)[1].lstrip(".")
     if not imgExt:
       raise ValueError("File %s does not have an extension" % outputImagePath)
     newFilePath = os.path.join(self._outputDir, md5Hash + '.' + imgExt)
     shutil.copy2(outputImagePath, newFilePath)
 
     # Add an entry to the list of test results
     self._results.append({
@@ skipping 37 matching lines @@
   # Create an instance and add results.
   propStr = """build_number 2 "builder name" Builder-Name gitHash a4a338179013b029d6dd55e737b5bd648a9fb68c"""
 
   keyStr = "arch arm64 compiler Clang configuration Debug"
 
   gr = GoldResults("pdfium", testDir, propStr, keyStr)
   gr.AddTestResult("test-1", "hash-1", os.path.join(testDir, "image1.png"))
   gr.AddTestResult("test-2", "hash-2", os.path.join(testDir, "image2.png"))
   gr.AddTestResult("test-3", "hash-3", os.path.join(testDir, "image3.png"))
   gr.WriteResults()