Revert of Combined test runner. (patchset #2 id:20001 of https://codereview.chromium.org/1850273003/ )

Reason for revert:
Broke Dr. Memory

Original issue's description:
> Combined test runner.
>
> This CL revives the old CL to combine the test runners [1] which was reverted
> due to failing font_size tests. I've deleted the font_size.pdf as it is not
> needed and for testing. Pixel tests are either .in or .pdf files, not both.
>
> Original description:
> This CL takes the three test runners (corpus, javascript, pixel) and combines
> the code into a single test_runner file. Each of the individual runners still
> exists and calls the test runner with their data directory.
>
> With this change, the pixel and javascript test will now run in parallel if
> multiple processors are available.
>
> 1-https://codereview.chromium.org/1430623006/
>
> Committed: https://pdfium.googlesource.com/pdfium/+/03e8f12cd3788038225d0376a164a9993f6cb720

TBR=tsepez@chromium.org,thestig@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Review URL: https://codereview.chromium.org/1867643002

1 files changed, 164 insertions, 3 deletions

diff --git a/testing/tools/run_corpus_tests.py b/testing/tools/run_corpus_tests.py
index dd81a2736d..0c44cc6972 100755
--- a/testing/tools/run_corpus_tests.py
+++ b/testing/tools/run_corpus_tests.py
@@ -3,13 +3,174 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import cStringIO
+import functools
+import multiprocessing
+import optparse
+import os
+import re
+import shutil
+import subprocess
 import sys
 
-import test_runner
+import common
+import pngdiffer
+import suppressor
+
+class KeyboardInterruptError(Exception): pass
+
+# Nomenclature:
+#   x_root - "x"
+#   x_filename - "x.ext"
+#   x_path - "path/to/a/b/c/x.ext"
+#   c_dir - "path/to/a/b/c"
+
+def test_one_file(input_filename, source_dir, working_dir,
+                  pdfium_test_path, image_differ, drmem_wrapper,
+                  redirect_output=False):
+  input_path = os.path.join(source_dir, input_filename)
+  pdf_path = os.path.join(working_dir, input_filename)
+  # Remove any existing generated images from previous runs.
+  actual_images = image_differ.GetActualFiles(
+      input_filename, source_dir, working_dir)
+  for image in actual_images:
+    if os.path.exists(image):
+      os.remove(image)
+
+  shutil.copyfile(input_path, pdf_path)
+  sys.stdout.flush()
+  # add Dr. Memory wrapper if exist
+  # remove .pdf suffix
+  cmd_to_run = common.DrMemoryWrapper(drmem_wrapper,
+                                      os.path.splitext(input_filename)[0])
+  cmd_to_run.extend([pdfium_test_path, '--png', pdf_path])
+  # run test
+  error = common.RunCommand(cmd_to_run, redirect_output)
+  if error:
+    print "FAILURE: " + input_filename + "; " + str(error)
+    return False
+  return not image_differ.HasDifferences(input_filename, source_dir,
+                                         working_dir, redirect_output)
+
+
+def test_one_file_parallel(working_dir, pdfium_test_path, image_differ,
+                           test_case):
+  """Wrapper function to call test_one_file() and redirect output to stdout."""
+  try:
+    old_stdout = sys.stdout
+    old_stderr = sys.stderr
+    sys.stdout = cStringIO.StringIO()
+    sys.stderr = sys.stdout
+    input_filename, source_dir = test_case
+    result = test_one_file(input_filename, source_dir, working_dir,
+                           pdfium_test_path, image_differ, "", True);
+    output = sys.stdout
+    sys.stdout = old_stdout
+    sys.stderr = old_stderr
+    return (result, output.getvalue(), input_filename, source_dir)
+  except KeyboardInterrupt:
+    raise KeyboardInterruptError()
+
+
+def handle_result(test_suppressor, input_filename, input_path, result,
+                  surprises, failures):
+  if test_suppressor.IsSuppressed(input_filename):
+    if result:
+      surprises.append(input_path)
+  else:
+    if not result:
+      failures.append(input_path)
+
 
 def main():
-  runner = test_runner.TestRunner('corpus')
-  return runner.Run()
+  parser = optparse.OptionParser()
+  parser.add_option('--build-dir', default=os.path.join('out', 'Debug'),
+                    help='relative path from the base source directory')
+  parser.add_option('-j', default=multiprocessing.cpu_count(),
+                    dest='num_workers', type='int',
+                    help='run NUM_WORKERS jobs in parallel')
+  parser.add_option('--wrapper', default='', dest="wrapper",
+                    help='Dr. Memory wrapper for running test under Dr. Memory')
+  options, args = parser.parse_args()
+  finder = common.DirectoryFinder(options.build_dir)
+  pdfium_test_path = finder.ExecutablePath('pdfium_test')
+  if not os.path.exists(pdfium_test_path):
+    print "FAILURE: Can't find test executable '%s'" % pdfium_test_path
+    print "Use --build-dir to specify its location."
+    return 1
+  working_dir = finder.WorkingDir(os.path.join('testing', 'corpus'))
+  if not os.path.exists(working_dir):
+    os.makedirs(working_dir)
+
+  feature_string = subprocess.check_output([pdfium_test_path, '--show-config'])
+  test_suppressor = suppressor.Suppressor(finder, feature_string)
+  image_differ = pngdiffer.PNGDiffer(finder)
+
+  # test files are under .../pdfium/testing/corpus.
+  failures = []
+  surprises = []
+  walk_from_dir = finder.TestingDir('corpus');
+  input_file_re = re.compile('^[a-zA-Z0-9_.]+[.]pdf$')
+  test_cases = []
+
+  if len(args):
+    for file_name in args:
+      input_path = os.path.join(walk_from_dir, file_name)
+      if not os.path.isfile(input_path):
+        print "Can't find test file '%s'" % file_name
+        return 1
+
+      test_cases.append((os.path.basename(input_path),
+                         os.path.dirname(input_path)))
+  else:
+    for source_dir, _, filename_list in os.walk(walk_from_dir):
+      for input_filename in filename_list:
+        if input_file_re.match(input_filename):
+          input_path = os.path.join(source_dir, input_filename)
+          if os.path.isfile(input_path):
+            test_cases.append((input_filename, source_dir))
+
+  if options.num_workers > 1 and len(test_cases) > 1:
+    try:
+      pool = multiprocessing.Pool(options.num_workers)
+      worker_func = functools.partial(test_one_file_parallel, working_dir,
+                                      pdfium_test_path, image_differ)
+      worker_results = pool.imap(worker_func, test_cases)
+      for worker_result in worker_results:
+        result, output, input_filename, source_dir = worker_result
+        input_path = os.path.join(source_dir, input_filename)
+        sys.stdout.write(output)
+        handle_result(test_suppressor, input_filename, input_path, result,
+                      surprises, failures)
+      pool.close()
+    except KeyboardInterrupt:
+      pool.terminate()
+    finally:
+      pool.join()
+  else:
+    for test_case in test_cases:
+      input_filename, source_dir = test_case
+      result = test_one_file(input_filename, source_dir, working_dir,
+                             pdfium_test_path, image_differ,
+                             options.wrapper)
+      handle_result(test_suppressor, input_filename, input_path, result,
+                    surprises, failures)
+
+  if surprises:
+    surprises.sort()
+    print '\n\nUnexpected Successes:'
+    for surprise in surprises:
+      print surprise;
+
+  if failures:
+    failures.sort()
+    print '\n\nSummary of Failures:'
+    for failure in failures:
+      print failure
+    return 1
+
+  return 0
+
 
 if __name__ == '__main__':
   sys.exit(main())