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1#!/usr/bin/env python
2# Copyright 2019 The Chromium Authors
3# Use of this source code is governed by a BSD-style license that can be
4# found in the LICENSE file.
5"""Runs a python script under an isolate
6
7This script attempts to emulate the contract of gtest-style tests
8invoked via recipes.
9
10If optional argument --isolated-script-test-output=[FILENAME] is passed
11to the script, json is written to that file in the format detailed in
12//docs/testing/json-test-results-format.md.
13
14This script is intended to be the base command invoked by the isolate,
15followed by a subsequent Python script."""
16
17import argparse
18import json
19import os
20import sys
21
22import common
23
24sys.path.append(
25    os.path.abspath(os.path.join(os.path.dirname(__file__), os.path.pardir)))
26# //testing imports.
27import xvfb
28
29# pylint: disable=super-with-arguments
30
31
32def main():
33  parser = argparse.ArgumentParser()
34  parser.add_argument('--isolated-script-test-output', type=str)
35  args, _ = parser.parse_known_args()
36
37  if sys.platform == 'win32':
38    exe = os.path.join('.', 'flatbuffers_unittests.exe')
39  else:
40    exe = os.path.join('.', 'flatbuffers_unittests')
41
42  env = os.environ.copy()
43  failures = []
44  with common.temporary_file() as tempfile_path:
45    rc = xvfb.run_executable([exe], env, stdoutfile=tempfile_path)
46
47    # The flatbuffer tests do not really conform to anything parsable, except
48    # that they will succeed with "ALL TESTS PASSED". We cannot test for
49    # equality because some tests operate on invalid input and produce error
50    # messages (e.g. "Field id in struct ProtoMessage has a non positive number
51    # value" in a test that verifies behavior if a proto message does contain
52    # a non positive number).
53    with open(tempfile_path) as f:
54      output = f.read()
55      if 'ALL TESTS PASSED\n' not in output:
56        failures = [output]
57
58  if args.isolated_script_test_output:
59    with open(args.isolated_script_test_output, 'w') as fp:
60      json.dump({'valid': True, 'failures': failures}, fp)
61
62  return rc
63
64
65def main_compile_targets(args):
66  json.dump(['flatbuffers_unittests'], args.output)
67
68
69if __name__ == '__main__':
70  # Conform minimally to the protocol defined by ScriptTest.
71  if 'compile_targets' in sys.argv:
72    funcs = {
73        'run': None,
74        'compile_targets': main_compile_targets,
75    }
76    sys.exit(common.run_script(sys.argv[1:], funcs))
77  sys.exit(main())
78