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build/fuchsia/create_test_runner_script.py

Index: build/fuchsia/create_test_runner_script.py
diff --git a/build/fuchsia/create_test_runner_script.py b/build/fuchsia/create_test_runner_script.py
new file mode 100755
index 0000000000000000000000000000000000000000..678018c045f1f8ef0867aa3261a402e3f138b005
--- /dev/null
+++ b/build/fuchsia/create_test_runner_script.py
@@ -0,0 +1,112 @@
+#!/usr/bin/env python
+#
+# Copyright 2017 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Creates a script to run a Fushsia test."""
+
+import argparse
+import os
+import re
+import sys
+
+
+SCRIPT_TEMPLATE = """\
+#!/usr/bin/env python
+#
+# This file was generated by build/fuchsia/create_test_runner_script.py
+
+import os
+import sys
+
+def main():
+  script_directory = os.path.dirname(__file__)
+
+  def ResolvePath(path):
+    \"\"\"Returns an absolute filepath given a path relative to this script.
+    \"\"\"
+    return os.path.abspath(os.path.join(script_directory, path))
+
+  test_runner_path = ResolvePath('{test_runner_path}')
+  test_runner_args = {test_runner_args}
+  test_runner_path_args = {test_runner_path_args}
+  for arg, path in test_runner_path_args:
+    test_runner_args.extend([arg, ResolvePath(path)])
+
+  os.execv(test_runner_path,
+           [test_runner_path] + test_runner_args + sys.argv[1:])
+
+if __name__ == '__main__':
+  sys.exit(main())
+"""
+
+
+def MakeDirectory(dir_path):
+  try:
+    os.makedirs(dir_path)
+  except OSError:
+    pass
+
+
+def WriteDepfile(depfile_path, first_gn_output, inputs=None):
+  assert depfile_path != first_gn_output
+  inputs = inputs or []
+  MakeDirectory(os.path.dirname(depfile_path))
+  # Ninja does not support multiple outputs in depfiles.
+  with open(depfile_path, 'w') as depfile:
+    depfile.write(first_gn_output.replace(' ', '\\ '))
+    depfile.write(': ')
+    depfile.write(' '.join(i.replace(' ', '\\ ') for i in inputs))
+    depfile.write('\n')
+
+
+def main(args):
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--script-output-path',
+                      help='Output path for executable script.')
+  parser.add_argument('--depfile',
+                      help='Path to the depfile. This must be specified as '
+                           "the action's first output.")
+  parser.add_argument('--test-runner-path',
+                      help='Path to test_runner.py (optional).')
+  group = parser.add_argument_group('Test runner path arguments.')
+  group.add_argument('--output-directory')
+  group.add_argument('--runtime-deps-path')
+  group.add_argument('--test-name')
+  args, test_runner_args = parser.parse_known_args(args)
+
+  def RelativizePathToScript(path):
+    """Returns the path relative to the output script directory."""
+    return os.path.relpath(path, os.path.dirname(args.script_output_path))
+
+  test_runner_path = args.test_runner_path or os.path.join(
+      os.path.dirname(__file__), 'test_runner.py')
+  test_runner_path = RelativizePathToScript(test_runner_path)
+
+  test_runner_path_args = []
+  if args.output_directory:
+    test_runner_path_args.append(
+        ('--output-directory', RelativizePathToScript(args.output_directory)))
+  if args.runtime_deps_path:
+    test_runner_path_args.append(
+        ('--runtime-deps-path', RelativizePathToScript(args.runtime_deps_path)))
+  if args.test_name:
+    test_runner_path_args.append(
+        ('--test-name', RelativizePathToScript(args.test_name)))
+
+  with open(args.script_output_path, 'w') as script:
+    script.write(SCRIPT_TEMPLATE.format(
+        test_runner_path=str(test_runner_path),
+        test_runner_args=str(test_runner_args),
+        test_runner_path_args=str(test_runner_path_args)))
+
+  os.chmod(args.script_output_path, 0750)
+
+  if args.depfile:
+    WriteDepfile(args.depfile, args.script_output_path,
+                 [__file__])
+
+
+if __name__ == '__main__':
+  sys.exit(main(sys.argv[1:]))