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#!/usr/bin/env python
# Copyright (C) 2017 Mike Pennisi. All rights reserved.
# This code is governed by the BSD license found in the LICENSE file.
import shutil, subprocess, sys, os, unittest, tempfile
testDir = os.path.dirname(os.path.relpath(__file__))
OUT_DIR = os.path.join(testDir, 'out')
ex = os.path.join(testDir, '..', 'lint.py')
class TestLinter(unittest.TestCase):
maxDiff = None
def fixture(self, name, content):
fspath = os.path.join(OUT_DIR, name)
with open(fspath, 'w') as f:
f.write(content)
return fspath
def lint(self, args):
args[:0] = [ex]
sp = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout, stderr = sp.communicate()
return dict(stdout=stdout, stderr=stderr, returncode=sp.returncode)
def setUp(self):
os.mkdir(OUT_DIR)
def tearDown(self):
shutil.rmtree(OUT_DIR, ignore_errors=True)
def test_no_file(self):
result = self.lint(['non-existent-file.js'])
self.assertNotEqual(result["returncode"], 0)
def test_whitelist_single(self):
test_content = ('// Copyright (C) 2017 Mike Pennisi. All rights reserved.\n' +
'// This code is governed by the BSD license found in the LICENSE file.')
test_file = self.fixture('input.js', test_content)
whitelist_content = test_file + ' FRONTMATTER'
whitelist_file = self.fixture('lint.whitelist', whitelist_content)
result = self.lint([test_file])
self.assertNotEqual(result['returncode'], 0)
result = self.lint(['--whitelist', whitelist_file, test_file])
self.assertEqual(result['returncode'], 0)
def test_whitelist_comment(self):
test_content = ('// Copyright (C) 2017 Mike Pennisi. All rights reserved.\n' +
'// This code is governed by the BSD license found in the LICENSE file.')
test_file = self.fixture('input.js', test_content)
whitelist_content = ('# One comment\n' +
'# Another comment\n' +
test_file + ' FRONTMATTER')
whitelist_file = self.fixture('lint.whitelist', whitelist_content)
result = self.lint([test_file])
self.assertNotEqual(result['returncode'], 0)
result = self.lint(['--whitelist', whitelist_file, test_file])
self.assertEqual(result['returncode'], 0)
def create_file_test(name, fspath):
'''Dynamically generate a function that may be used as a test method with
the Python `unittest` module.'''
def test(self):
with open(fspath, 'r') as f:
contents = f.read()
expected, input = contents.split('^ expected errors | v input\n')
expected = expected.split()
tmp_file = self.fixture(name, input)
result = self.lint([tmp_file])
if len(expected) == 0:
self.assertEqual(result['returncode'], 0)
self.assertEqual(result['stderr'], '')
else:
self.assertNotEqual(result['returncode'], 0)
for err in expected:
self.assertIn(err, result['stderr'])
return test
dirname = os.path.join(os.path.abspath(testDir), 'fixtures')
for file_name in os.listdir(dirname):
full_path = os.path.join(dirname, file_name)
if not os.path.isfile(full_path) or file_name.startswith('.'):
continue
t = create_file_test(file_name, full_path)
t.__name__ = 'test_' + file_name
setattr(TestLinter, t.__name__, t)
if __name__ == '__main__':
unittest.main()
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