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import configparser
import io
import os.path
import pathlib
import sys
import unittest
import pycodestyle
from testing.support import ROOT
class ShellTestCase(unittest.TestCase):
"""Test the usual CLI options and output."""
def setUp(self):
self._saved_argv = sys.argv
self._saved_stdout = sys.stdout
self._saved_stderr = sys.stderr
self._saved_pconfig = pycodestyle.PROJECT_CONFIG
self._saved_cpread = configparser.RawConfigParser._read
self._saved_stdin_get_value = pycodestyle.stdin_get_value
self._config_filenames = []
self.stdin = ''
sys.argv = ['pycodestyle']
sys.stdout = io.StringIO()
sys.stderr = io.StringIO()
def fake_config_parser_read(cp, fp, filename):
self._config_filenames.append(filename)
configparser.RawConfigParser._read = fake_config_parser_read
pycodestyle.stdin_get_value = self.stdin_get_value
def tearDown(self):
sys.argv = self._saved_argv
sys.stdout = self._saved_stdout
sys.stderr = self._saved_stderr
pycodestyle.PROJECT_CONFIG = self._saved_pconfig
configparser.RawConfigParser._read = self._saved_cpread
pycodestyle.stdin_get_value = self._saved_stdin_get_value
def stdin_get_value(self):
return self.stdin
def pycodestyle(self, *args):
sys.stdout.seek(0)
sys.stdout.truncate()
sys.stderr.seek(0)
sys.stderr.truncate()
sys.argv[1:] = args
try:
pycodestyle._main()
errorcode = None
except SystemExit:
errorcode = sys.exc_info()[1].code
return sys.stdout.getvalue(), sys.stderr.getvalue(), errorcode
def test_print_usage(self):
stdout, stderr, errcode = self.pycodestyle('--help')
self.assertFalse(errcode)
self.assertFalse(stderr)
self.assertTrue(stdout.startswith(
"Usage: pycodestyle [options] input"
))
stdout, stderr, errcode = self.pycodestyle('--version')
self.assertFalse(errcode)
self.assertFalse(stderr)
self.assertEqual(stdout.count('\n'), 1)
stdout, stderr, errcode = self.pycodestyle('--obfuscated')
self.assertEqual(errcode, 2)
self.assertEqual(stderr.splitlines(),
["Usage: pycodestyle [options] input ...", "",
"pycodestyle: error: no such option: --obfuscated"])
self.assertFalse(stdout)
self.assertFalse(self._config_filenames)
def test_check_simple(self):
E11 = os.path.join(ROOT, 'testing', 'data', 'E11.py')
stdout, stderr, errcode = self.pycodestyle(E11)
stdout = stdout.splitlines()
self.assertEqual(errcode, 1)
self.assertFalse(stderr)
self.assertEqual(len(stdout), 24)
for line, num, col in zip(stdout, (3, 6, 6, 9, 12), (3, 6, 6, 1, 5)):
path, x, y, msg = line.rsplit(':', 3)
self.assertTrue(path.endswith(E11))
self.assertEqual(x, str(num))
self.assertEqual(y, str(col))
self.assertTrue(msg.startswith(' E11'))
# Config file read from the pycodestyle's setup.cfg
config_filenames = [os.path.basename(p)
for p in self._config_filenames]
self.assertTrue('setup.cfg' in config_filenames)
def test_check_stdin(self):
pycodestyle.PROJECT_CONFIG = ()
stdout, stderr, errcode = self.pycodestyle('-')
self.assertFalse(errcode)
self.assertFalse(stderr)
self.assertFalse(stdout)
self.stdin = 'import os, sys\n'
stdout, stderr, errcode = self.pycodestyle('-')
stdout = stdout.splitlines()
self.assertEqual(errcode, 1)
self.assertFalse(stderr)
self.assertEqual(stdout,
['stdin:1:10: E401 multiple imports on one line'])
def test_check_non_existent(self):
self.stdin = 'import os, sys\n'
stdout, stderr, errcode = self.pycodestyle('fictitious.py')
self.assertEqual(errcode, 1)
self.assertFalse(stderr)
self.assertTrue(stdout.startswith('fictitious.py:1:1: E902 '))
def test_check_noarg(self):
# issue #170: do not read stdin by default
pycodestyle.PROJECT_CONFIG = ()
stdout, stderr, errcode = self.pycodestyle()
self.assertEqual(errcode, 2)
self.assertEqual(stderr.splitlines(),
["Usage: pycodestyle [options] input ...", "",
"pycodestyle: error: input not specified"])
self.assertFalse(self._config_filenames)
def test_check_diff(self):
pycodestyle.PROJECT_CONFIG = ()
topdir = pathlib.Path(__file__).parent.parent
test_file = os.path.relpath(topdir / "testing" / "data" / "E11.py")
diff_lines = [
f"--- {test_file} 2006-06-01 08:49:50 +0500",
f"+++ {test_file} 2008-04-06 17:36:29 +0500",
"@@ -2,4 +2,7 @@",
" if x > 2:",
" print x",
"+#: E111",
"+if True:",
"+ print",
" #: E112",
" if False:",
"",
]
self.stdin = '\n'.join(diff_lines)
stdout, stderr, errcode = self.pycodestyle('--diff')
stdout = stdout.splitlines()
self.assertEqual(errcode, 1)
self.assertFalse(stderr)
for line, num, col in zip(stdout, (3, 6), (3, 6)):
path, x, y, msg = line.split(':')
self.assertEqual(x, str(num))
self.assertEqual(y, str(col))
self.assertTrue(msg.startswith(' E11'))
diff_lines[:2] = [
f"--- a/{test_file} 2006-06-01 08:49 +0400",
f"+++ b/{test_file} 2008-04-06 17:36 +0400",
]
self.stdin = '\n'.join(diff_lines)
stdout, stderr, errcode = self.pycodestyle('--diff')
stdout = stdout.splitlines()
self.assertEqual(errcode, 1)
self.assertFalse(stderr)
for line, num, col in zip(stdout, (3, 6), (3, 6)):
path, x, y, msg = line.split(':')
self.assertEqual(x, str(num))
self.assertEqual(y, str(col))
self.assertTrue(msg.startswith(' E11'))
# issue #127, #137: one-line chunks
diff_lines[:-1] = [
f"diff --git a/{test_file} b/{test_file}",
"index 8735e25..2ecb529 100644",
f"--- a/{test_file}",
f"+++ b/{test_file}",
"@@ -5,0 +6 @@ if True:",
"+ print",
]
self.stdin = '\n'.join(diff_lines)
stdout, stderr, errcode = self.pycodestyle('--diff')
stdout = stdout.splitlines()
self.assertEqual(errcode, 1)
self.assertFalse(stderr)
self.assertTrue(f'{test_file}:6:6: E111 ' in stdout[0])
self.assertTrue(f'{test_file}:6:6: E117 ' in stdout[1])
# missing '--diff'
self.stdin = '\n'.join(diff_lines)
stdout, stderr, errcode = self.pycodestyle()
self.assertEqual(errcode, 2)
self.assertFalse(stdout)
self.assertTrue(stderr.startswith(
'Usage: pycodestyle [options] input ...'
))
# no matching file in the diff
diff_lines[3] = "+++ b/testing/lost/E11.py"
self.stdin = '\n'.join(diff_lines)
stdout, stderr, errcode = self.pycodestyle('--diff')
self.assertFalse(errcode)
self.assertFalse(stdout)
self.assertFalse(stderr)
for index, diff_line in enumerate(diff_lines, 0):
diff_line = diff_line.replace('a/', 'i/')
diff_lines[index] = diff_line.replace('b/', 'w/')
self.stdin = '\n'.join(diff_lines)
stdout, stderr, errcode = self.pycodestyle('--diff')
self.assertFalse(errcode)
self.assertFalse(stdout)
self.assertFalse(stderr)
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