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#!/usr/bin/env python3
# Copyright 2020 the V8 project 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 os
import re
import subprocess
import sys
import tempfile
import unittest
TOOLS_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
COMPARE_SCRIPT = os.path.join(TOOLS_DIR, 'compare_torque_output.py')
TEST_DATA = os.path.join(TOOLS_DIR, 'unittests', 'testdata', 'compare_torque')
class PredictableTest(unittest.TestCase):
def setUp(self):
fd, self.tmp_file = tempfile.mkstemp()
os.close(fd)
def _compare_from(self, test_folder):
file1 = os.path.join(TEST_DATA, test_folder, 'f1')
file2 = os.path.join(TEST_DATA, test_folder, 'f2')
proc = subprocess.Popen([
sys.executable, '-u',
COMPARE_SCRIPT, file1, file2, self.tmp_file
], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
_, err = proc.communicate()
return proc.returncode, err
def test_content_diff(self):
exitcode, output = self._compare_from('test1')
self.assertEqual(1, exitcode)
full_match = r'^Found.*-line 2\+line 2 with diff.*\+line 3\n\n$'
self.assertRegex(output.decode('utf-8'), re.compile(full_match, re.M | re.S))
def test_no_diff(self):
exitcode, output = self._compare_from('test2')
self.assertEqual(0, exitcode)
self.assertFalse(output)
def test_right_only(self):
exitcode, output = self._compare_from('test3')
self.assertEqual(1, exitcode)
self.assertRegex(output.decode('utf-8'), r'Some files exist only in.*f2\nfile3')
def test_left_only(self):
exitcode, output = self._compare_from('test4')
self.assertEqual(1, exitcode)
self.assertRegex(output.decode('utf-8'), r'Some files exist only in.*f1\nfile4')
def tearDown(self):
os.unlink(self.tmp_file)
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