v8/test/message/testcfg.py

# Copyright 2008 the V8 project authors. All rights reserved.
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# modification, are permitted provided that the following conditions are
# met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above
#       copyright notice, this list of conditions and the following
#       disclaimer in the documentation and/or other materials provided
#       with the distribution.
#     * Neither the name of Google Inc. nor the names of its
#       contributors may be used to endorse or promote products derived
#       from this software without specific prior written permission.
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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import itertools
import os
import re

from testrunner.local import testsuite
from testrunner.local import utils
from testrunner.objects import outproc
from testrunner.objects import testcase


INVALID_FLAGS = ["--enable-slow-asserts"]
MODULE_PATTERN = re.compile(r"^// MODULE$", flags=re.MULTILINE)


class TestSuite(testsuite.TestSuite):
  def ListTests(self, context):
    tests = []
    for dirname, dirs, files in os.walk(self.root):
      for dotted in [x for x in dirs if x.startswith('.')]:
        dirs.remove(dotted)
      dirs.sort()
      files.sort()
      for filename in files:
        if filename.endswith(".js"):
          fullpath = os.path.join(dirname, filename)
          relpath = fullpath[len(self.root) + 1 : -3]
          testname = relpath.replace(os.path.sep, "/")
          test = self._create_test(testname)
          tests.append(test)
    return tests

  def _test_class(self):
    return TestCase

  def CreateVariantGenerator(self, variants):
    return super(TestSuite, self).CreateVariantGenerator(
        variants + ["preparser"])


class TestCase(testcase.TestCase):
  def __init__(self, *args, **kwargs):
    super(TestCase, self).__init__(*args, **kwargs)

    source = self.get_source()
    self._source_files = self._parse_source_files(source)
    self._source_flags = self._parse_source_flags(source)
    self._out_proc = OutProc(os.path.join(self.suite.root, self.path),
                             self._expected_fail())

  def _parse_source_files(self, source):
    files = []
    if MODULE_PATTERN.search(source):
      files.append("--module")
    files.append(os.path.join(self.suite.root, self.path + ".js"))
    return files

  def _expected_fail(self):
    path = self.path
    while path:
      head, tail = os.path.split(path)
      if tail == 'fail':
        return True
      path = head
    return False

  def _get_cmd_params(self, ctx):
    params = super(TestCase, self)._get_cmd_params(ctx)
    return [p for p in params if p not in INVALID_FLAGS]

  def _get_files_params(self, ctx):
    return self._source_files

  def _get_source_flags(self):
    return self._source_flags

  def _get_source_path(self):
    return os.path.join(self.suite.root, self.path + self._get_suffix())

  def get_output_proc(self):
    return self._out_proc


class OutProc(outproc.OutProc):
  def __init__(self, basepath, expected_fail):
    self._basepath = basepath
    self._expected_fail = expected_fail

  def _is_failure_output(self, output):
    fail = output.exit_code != 0
    if fail != self._expected_fail:
      return True

    expected_lines = []
    # Can't use utils.ReadLinesFrom() here because it strips whitespace.
    with open(self._basepath + '.out') as f:
      for line in f:
        if line.startswith("#") or not line.strip():
          continue
        expected_lines.append(line)
    raw_lines = output.stdout.splitlines()
    actual_lines = [ s for s in raw_lines if not self._ignore_line(s) ]
    if len(expected_lines) != len(actual_lines):
      return True

    env = {
      'basename': os.path.basename(self._basepath + '.js'),
    }
    for (expected, actual) in itertools.izip_longest(
        expected_lines, actual_lines, fillvalue=''):
      pattern = re.escape(expected.rstrip() % env)
      pattern = pattern.replace('\\*', '.*')
      pattern = pattern.replace('\\{NUMBER\\}', '\d+(?:\.\d*)?')
      pattern = '^%s$' % pattern
      if not re.match(pattern, actual):
        return True
    return False

  def _ignore_line(self, string):
    """Ignore empty lines, valgrind output, Android output."""
    return (
      not string or
      not string.strip() or
      string.startswith("==") or
      string.startswith("**") or
      string.startswith("ANDROID")
    )

  def _is_negative(self):
    return False


def GetSuite(name, root):
  return TestSuite(name, root)