Pull our new test case repository via deps.

Add a run_corpus_tests.py script to run pdfium_test against
the corpus tree.

Note that this differs from the run_pixel_tests.py script,
since pre-processing is not required.  I'll work on unifying
these in a subsequent CL.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1010833003

2 files changed, 102 insertions, 0 deletions

diff --git a/DEPS b/DEPS
index 6bde04d7e1..d70e756960 100644
--- a/DEPS
+++ b/DEPS
@@ -4,6 +4,9 @@ deps = {
   "build/gyp":
     "https://chromium.googlesource.com/external/gyp",
 
+  "testing/corpus":
+     "https://pdfium.googlesource.com/pdfium_tests",
+
   "testing/gmock":
      "https://chromium.googlesource.com/external/googlemock.git@29763965ab52f24565299976b936d1265cb6a271",
 
diff --git a/testing/tools/run_corpus_tests.py b/testing/tools/run_corpus_tests.py
new file mode 100755
index 0000000000..674334f33e
--- /dev/null
+++ b/testing/tools/run_corpus_tests.py
@@ -0,0 +1,99 @@
+#!/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 optparse
+import os
+import re
+import subprocess
+import sys
+
+# 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, pdfium_diff_path):
+  input_root, _ = os.path.splitext(input_filename)
+  input_path = os.path.join(source_dir, input_filename)
+  pdf_path = os.path.join(working_dir, input_filename)
+  actual_path_template = os.path.join(working_dir, input_root + '.pdf.%d.png')
+  expected_path_template = os.path.join(source_dir,
+                                        input_root + '_expected.pdf.%d.png')
+  try:
+    subprocess.check_call(['cp', input_path, pdf_path])
+    subprocess.check_call([pdfium_test_path, '--png', pdf_path])
+    i = 0;
+    while True:
+      expected_path = expected_path_template % i;
+      actual_path = actual_path_template % i;
+      if not os.path.exists(expected_path):
+        if i == 0:
+          print "WARNING: no expected results files found for " + input_filename
+        break
+      print "Checking " + actual_path
+      subprocess.check_call([pdfium_diff_path, expected_path, actual_path])
+      i += 1
+  except subprocess.CalledProcessError as e:
+    print "FAILURE: " + input_filename + "; " + str(e)
+
+def main():
+  parser = optparse.OptionParser()
+  parser.add_option('--build-dir', default=os.path.join('out', 'Debug'),
+                    help='relative path from the base source directory')
+  options, args = parser.parse_args()
+
+  # Expect |my_dir| to be .../pdfium/testing/tools.
+  my_dir = os.path.dirname(os.path.realpath(__file__))
+  testing_dir = os.path.dirname(my_dir)
+  pdfium_dir = os.path.dirname(testing_dir)
+  if (os.path.basename(my_dir) != 'tools' or
+      os.path.basename(testing_dir) != 'testing'):
+    print 'Confused, can not find pdfium root directory, aborting.'
+    return 1
+
+  # Find path to build directory.  This depends on whether this is a
+  # standalone build vs. a build as part of a chromium checkout. For
+  # standalone, we expect a path like .../pdfium/out/Debug, but for
+  # chromium, we expect a path like .../src/out/Debug two levels
+  # higher (to skip over the third_party/pdfium path component under
+  # which chromium sticks pdfium).
+  base_dir = pdfium_dir
+  one_up_dir = os.path.dirname(base_dir)
+  two_up_dir = os.path.dirname(one_up_dir)
+  if (os.path.basename(two_up_dir) == 'src' and
+      os.path.basename(one_up_dir) == 'third_party'):
+    base_dir = two_up_dir
+  build_dir = os.path.join(base_dir, options.build_dir)
+
+  # Compiled binaries are found under the build path.
+  pdfium_test_path = os.path.join(build_dir, 'pdfium_test')
+  pdfium_diff_path = os.path.join(build_dir, 'pdfium_diff')
+  if sys.platform.startswith('win'):
+    pdfium_test_path = pdfium_test_path + '.exe'
+    pdfium_diff_path = pdfium_diff_path + '.exe'
+  # TODO(tsepez): Mac may require special handling here.
+
+  # Place generated files under the build directory, not source directory.
+  working_dir = os.path.join(build_dir, 'gen', 'pdfium', 'testing', 'corpus')
+  if not os.path.exists(working_dir):
+    os.makedirs(working_dir)
+
+  # test files are under .../pdfium/testing/corpus.
+  walk_from_dir = os.path.join(testing_dir, 'corpus');
+  input_file_re = re.compile('^[a-zA-Z0-9_.]+[.]pdf$')
+  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_one_file(input_filename, source_dir, working_dir,
+                         pdfium_test_path, pdfium_diff_path)
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main())