Re-Reland Combined test runner.

Original Commit Message:

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/

BUG=

Review URL: https://codereview.chromium.org/1888673003

1 files changed, 242 insertions, 0 deletions

diff --git a/testing/tools/test_runner.py b/testing/tools/test_runner.py
new file mode 100644
index 0000000000..698428ebc2
--- /dev/null
+++ b/testing/tools/test_runner.py
@@ -0,0 +1,242 @@
+#!/usr/bin/env python
+# 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 cStringIO
+import functools
+import multiprocessing
+import optparse
+import os
+import re
+import shutil
+import subprocess
+import sys
+
+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 TestOneFileParallel(this, test_case):
+  """Wrapper to call GenerateAndTest() 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 = this.GenerateAndTest(input_filename, source_dir, True);
+
+    output = sys.stdout
+    sys.stdout = old_stdout
+    sys.stderr = old_stderr
+    return (result, output.getvalue(), input_filename, source_dir)
+  except KeyboardInterrupt:
+    raise KeyboardInterruptError()
+
+class TestRunner:
+  def __init__(self, dirname):
+    self.test_dir = dirname
+
+  def GenerateAndTest(self, input_filename, source_dir, redirect_output=False):
+    input_root, _ = os.path.splitext(input_filename)
+    expected_txt_path = os.path.join(source_dir, input_root + '_expected.txt')
+
+    pdf_path = os.path.join(self.working_dir, input_root + '.pdf')
+
+    # Remove any existing generated images from previous runs.
+    actual_images = self.image_differ.GetActualFiles(input_filename, source_dir,
+                                                     self.working_dir)
+    for image in actual_images:
+      if os.path.exists(image):
+        os.remove(image)
+
+    sys.stdout.flush()
+
+    raised_exception = self.Generate(source_dir, input_filename, input_root,
+                                     pdf_path, redirect_output)
+
+    if raised_exception != None:
+      print "FAILURE: " + input_filename + "; " + str(raised_exception)
+      return False
+
+    if os.path.exists(expected_txt_path):
+      raised_exception = self.TestText(input_root, expected_txt_path, pdf_path,
+                                       redirect_output)
+    else:
+      raised_exception = self.TestPixel(pdf_path, redirect_output)
+
+    if raised_exception != None:
+      print "FAILURE: " + input_filename + "; " + str(raised_exception)
+      return False
+
+    if len(actual_images):
+      if self.image_differ.HasDifferences(input_filename, source_dir,
+                                          self.working_dir, redirect_output):
+        return False
+
+    return True
+
+
+  def Generate(self, source_dir, input_filename, input_root, pdf_path,
+               redirect_output):
+    original_path = os.path.join(source_dir, input_filename)
+    input_path = os.path.join(source_dir, input_root + '.in')
+    txt_path = os.path.join(self.working_dir, input_root + '.txt')
+
+    if not os.path.exists(input_path):
+      if os.path.exists(original_path):
+        shutil.copyfile(original_path, pdf_path)
+      return None
+
+    sys.stdout.flush()
+    subprocess.check_call(
+        [sys.executable, self.fixup_path, '--output-dir=' + self.working_dir,
+            input_path])
+
+    with open(txt_path, 'w') as outfile:
+      # Add Dr. Memory wrapper if exists.
+      cmd = common.DrMemoryWrapper(self.drmem_wrapper, input_root)
+      cmd.extend([self.pdfium_test_path, pdf_path])
+      ret = common.RunCommandToFile(cmd, outfile)
+    return ret
+
+  def TestText(self, input_root, expected_txt_path, pdf_path, redirect_output):
+    txt_path = os.path.join(self.working_dir, input_root + '.txt')
+    with open(txt_path, 'w') as outfile:
+      subprocess.check_call([self.pdfium_test_path, pdf_path], stdout=outfile)
+
+    cmd = [sys.executable, self.text_diff_path, expected_txt_path, txt_path]
+    return common.RunCommand(cmd, redirect_output)
+
+
+  def TestPixel(self, pdf_path, redirect_output):
+    return common.RunCommand(
+        [self.pdfium_test_path, '--png', pdf_path], redirect_output)
+
+
+  def HandleResult(self, input_filename, input_path, result):
+    if self.test_suppressor.IsResultSuppressed(input_filename):
+      if result:
+        self.surprises.append(input_path)
+    else:
+      if not result:
+        self.failures.append(input_path)
+
+
+  def Run(self):
+    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='wrapper for running test under Dr. Memory')
+    options, args = parser.parse_args()
+
+    finder = common.DirectoryFinder(options.build_dir)
+    self.fixup_path = finder.ScriptPath('fixup_pdf_template.py')
+    self.text_diff_path = finder.ScriptPath('text_diff.py')
+
+    self.drmem_wrapper = options.wrapper
+
+    self.source_dir = finder.TestingDir()
+
+    if self.test_dir != 'corpus':
+      test_dir = finder.TestingDir(os.path.join('resources', self.test_dir))
+    else:
+      test_dir = finder.TestingDir(self.test_dir)
+
+    self.pdfium_test_path = finder.ExecutablePath('pdfium_test')
+    if not os.path.exists(self.pdfium_test_path):
+      print "FAILURE: Can't find test executable '%s'" % self.pdfium_test_path
+      print "Use --build-dir to specify its location."
+      return 1
+
+    self.working_dir = finder.WorkingDir(os.path.join('testing', self.test_dir))
+    if not os.path.exists(self.working_dir):
+      os.makedirs(self.working_dir)
+
+    self.feature_string = subprocess.check_output([self.pdfium_test_path,
+                                                  '--show-config'])
+    self.test_suppressor = suppressor.Suppressor(finder, self.feature_string)
+    self.image_differ = pngdiffer.PNGDiffer(finder)
+
+    walk_from_dir = finder.TestingDir(test_dir);
+
+    test_cases = []
+    input_file_re = re.compile('^[a-zA-Z0-9_.]+[.](in|pdf)$')
+
+    if len(args):
+      for file_name in args:
+        file_name.replace(".pdf", ".in")
+        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 file_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(file_dir, input_filename)
+            if not self.test_suppressor.IsExecutionSuppressed(input_path):
+              if os.path.isfile(input_path):
+                test_cases.append((input_filename, file_dir))
+
+    self.failures = []
+    self.surprises = []
+
+    if options.num_workers > 1 and not len(args):
+      try:
+        pool = multiprocessing.Pool(options.num_workers)
+        worker_func = functools.partial(TestOneFileParallel, self)
+
+        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)
+
+          self.HandleResult(input_filename, input_path, result)
+      except KeyboardInterrupt:
+        pool.terminate()
+      finally:
+        pool.close()
+        pool.join()
+    else:
+      for test_case in test_cases:
+        input_filename, input_file_dir = test_case
+        result = self.GenerateAndTest(input_filename, input_file_dir)
+        self.HandleResult(input_filename,
+                          os.path.join(input_file_dir, input_filename), result)
+
+    if self.surprises:
+      self.surprises.sort()
+      print '\n\nUnexpected Successes:'
+      for surprise in self.surprises:
+        print surprise;
+
+    if self.failures:
+      self.failures.sort()
+      print '\n\nSummary of Failures:'
+      for failure in self.failures:
+        print failure
+      return 1
+
+    return 0
+
+
+