121 lines
4.3 KiB
Python
121 lines
4.3 KiB
Python
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#!/usr/bin/env python
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# Copyright (c) 2013 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Test harness for chromium clang tools."""
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import difflib
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import glob
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import json
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import os
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import os.path
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import subprocess
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import shutil
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import sys
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def _GenerateCompileCommands(files, include_paths):
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"""Returns a JSON string containing a compilation database for the input."""
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include_path_flags = ''.join('-I %s' % include_path
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for include_path in include_paths)
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return json.dumps([{'directory': '.',
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'command': 'clang++ -fsyntax-only %s -c %s' % (
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include_path_flags, f),
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'file': f} for f in files], indent=2)
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def _NumberOfTestsToString(tests):
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"""Returns an English describing the number of tests."""
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return "%d test%s" % (tests, 's' if tests != 1 else '')
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def main(argv):
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if len(argv) < 1:
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print 'Usage: test_tool.py <clang tool>'
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print ' <clang tool> is the clang tool to be tested.'
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sys.exit(1)
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tool_to_test = argv[0]
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tools_clang_scripts_directory = os.path.dirname(os.path.realpath(__file__))
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tools_clang_directory = os.path.dirname(tools_clang_scripts_directory)
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test_directory_for_tool = os.path.join(
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tools_clang_directory, tool_to_test, 'tests')
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compile_database = os.path.join(test_directory_for_tool,
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'compile_commands.json')
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source_files = glob.glob(os.path.join(test_directory_for_tool,
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'*-original.cc'))
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actual_files = ['-'.join([source_file.rsplit('-', 2)[0], 'actual.cc'])
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for source_file in source_files]
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expected_files = ['-'.join([source_file.rsplit('-', 2)[0], 'expected.cc'])
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for source_file in source_files]
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include_paths = []
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include_paths.append(
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os.path.realpath(os.path.join(tools_clang_directory, '../..')))
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try:
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# Set up the test environment.
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for source, actual in zip(source_files, actual_files):
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shutil.copyfile(source, actual)
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# Stage the test files in the git index. If they aren't staged, then
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# run_tools.py will skip them when applying replacements.
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args = ['git', 'add']
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args.extend(actual_files)
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subprocess.check_call(args)
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# Generate a temporary compilation database to run the tool over.
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with open(compile_database, 'w') as f:
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f.write(_GenerateCompileCommands(actual_files, include_paths))
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args = ['python',
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os.path.join(tools_clang_scripts_directory, 'run_tool.py'),
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tool_to_test,
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test_directory_for_tool]
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args.extend(actual_files)
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run_tool = subprocess.Popen(args, stdout=subprocess.PIPE)
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stdout, _ = run_tool.communicate()
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if run_tool.returncode != 0:
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print 'run_tool failed:\n%s' % stdout
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sys.exit(1)
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passed = 0
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failed = 0
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for expected, actual in zip(expected_files, actual_files):
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print '[ RUN ] %s' % os.path.relpath(actual)
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expected_output = actual_output = None
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with open(expected, 'r') as f:
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expected_output = f.readlines()
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with open(actual, 'r') as f:
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actual_output = f.readlines()
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if actual_output != expected_output:
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print '[ FAILED ] %s' % os.path.relpath(actual)
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failed += 1
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for line in difflib.unified_diff(expected_output, actual_output,
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fromfile=os.path.relpath(expected),
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tofile=os.path.relpath(actual)):
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sys.stdout.write(line)
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# Don't clean up the file on failure, so the results can be referenced
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# more easily.
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continue
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print '[ OK ] %s' % os.path.relpath(actual)
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passed += 1
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os.remove(actual)
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if failed == 0:
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os.remove(compile_database)
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print '[==========] %s ran.' % _NumberOfTestsToString(len(source_files))
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if passed > 0:
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print '[ PASSED ] %s.' % _NumberOfTestsToString(passed)
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if failed > 0:
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print '[ FAILED ] %s.' % _NumberOfTestsToString(failed)
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finally:
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# No matter what, unstage the git changes we made earlier to avoid polluting
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# the index.
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args = ['git', 'reset', '--quiet', 'HEAD']
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args.extend(actual_files)
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subprocess.call(args)
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if __name__ == '__main__':
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sys.exit(main(sys.argv[1:]))
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