mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-23 13:20:41 +00:00
797 lines
25 KiB
Python
797 lines
25 KiB
Python
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"""
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Tests for L{pyflakes.scripts.pyflakes}.
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"""
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import contextlib
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import os
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import sys
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import shutil
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import subprocess
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import tempfile
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from pyflakes.checker import PY2
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from pyflakes.messages import UnusedImport
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from pyflakes.reporter import Reporter
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from pyflakes.api import (
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main,
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checkPath,
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checkRecursive,
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iterSourceCode,
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)
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from pyflakes.test.harness import TestCase, skipIf
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if sys.version_info < (3,):
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from cStringIO import StringIO
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else:
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from io import StringIO
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unichr = chr
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try:
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sys.pypy_version_info
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PYPY = True
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except AttributeError:
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PYPY = False
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try:
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WindowsError
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WIN = True
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except NameError:
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WIN = False
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ERROR_HAS_COL_NUM = ERROR_HAS_LAST_LINE = sys.version_info >= (3, 2) or PYPY
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def withStderrTo(stderr, f, *args, **kwargs):
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"""
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Call C{f} with C{sys.stderr} redirected to C{stderr}.
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"""
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(outer, sys.stderr) = (sys.stderr, stderr)
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try:
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return f(*args, **kwargs)
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finally:
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sys.stderr = outer
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class Node(object):
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"""
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Mock an AST node.
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"""
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def __init__(self, lineno, col_offset=0):
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self.lineno = lineno
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self.col_offset = col_offset
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class SysStreamCapturing(object):
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"""
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Context manager capturing sys.stdin, sys.stdout and sys.stderr.
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The file handles are replaced with a StringIO object.
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On environments that support it, the StringIO object uses newlines
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set to os.linesep. Otherwise newlines are converted from \\n to
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os.linesep during __exit__.
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"""
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def _create_StringIO(self, buffer=None):
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# Python 3 has a newline argument
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try:
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return StringIO(buffer, newline=os.linesep)
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except TypeError:
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self._newline = True
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# Python 2 creates an input only stream when buffer is not None
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if buffer is None:
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return StringIO()
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else:
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return StringIO(buffer)
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def __init__(self, stdin):
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self._newline = False
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self._stdin = self._create_StringIO(stdin or '')
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def __enter__(self):
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self._orig_stdin = sys.stdin
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self._orig_stdout = sys.stdout
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self._orig_stderr = sys.stderr
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sys.stdin = self._stdin
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sys.stdout = self._stdout_stringio = self._create_StringIO()
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sys.stderr = self._stderr_stringio = self._create_StringIO()
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return self
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def __exit__(self, *args):
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self.output = self._stdout_stringio.getvalue()
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self.error = self._stderr_stringio.getvalue()
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if self._newline and os.linesep != '\n':
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self.output = self.output.replace('\n', os.linesep)
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self.error = self.error.replace('\n', os.linesep)
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sys.stdin = self._orig_stdin
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sys.stdout = self._orig_stdout
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sys.stderr = self._orig_stderr
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class LoggingReporter(object):
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"""
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Implementation of Reporter that just appends any error to a list.
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"""
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def __init__(self, log):
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"""
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Construct a C{LoggingReporter}.
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@param log: A list to append log messages to.
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"""
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self.log = log
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def flake(self, message):
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self.log.append(('flake', str(message)))
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def unexpectedError(self, filename, message):
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self.log.append(('unexpectedError', filename, message))
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def syntaxError(self, filename, msg, lineno, offset, line):
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self.log.append(('syntaxError', filename, msg, lineno, offset, line))
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class TestIterSourceCode(TestCase):
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"""
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Tests for L{iterSourceCode}.
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"""
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def setUp(self):
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self.tempdir = tempfile.mkdtemp()
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def tearDown(self):
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shutil.rmtree(self.tempdir)
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def makeEmptyFile(self, *parts):
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assert parts
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fpath = os.path.join(self.tempdir, *parts)
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open(fpath, 'a').close()
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return fpath
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def test_emptyDirectory(self):
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"""
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There are no Python files in an empty directory.
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"""
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self.assertEqual(list(iterSourceCode([self.tempdir])), [])
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def test_singleFile(self):
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"""
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If the directory contains one Python file, C{iterSourceCode} will find
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it.
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"""
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childpath = self.makeEmptyFile('foo.py')
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self.assertEqual(list(iterSourceCode([self.tempdir])), [childpath])
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def test_onlyPythonSource(self):
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"""
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Files that are not Python source files are not included.
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"""
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self.makeEmptyFile('foo.pyc')
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self.assertEqual(list(iterSourceCode([self.tempdir])), [])
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def test_recurses(self):
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"""
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If the Python files are hidden deep down in child directories, we will
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find them.
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"""
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os.mkdir(os.path.join(self.tempdir, 'foo'))
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apath = self.makeEmptyFile('foo', 'a.py')
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self.makeEmptyFile('foo', 'a.py~')
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os.mkdir(os.path.join(self.tempdir, 'bar'))
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bpath = self.makeEmptyFile('bar', 'b.py')
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cpath = self.makeEmptyFile('c.py')
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self.assertEqual(
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sorted(iterSourceCode([self.tempdir])),
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sorted([apath, bpath, cpath]))
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def test_shebang(self):
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"""
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Find Python files that don't end with `.py`, but contain a Python
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shebang.
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"""
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python = os.path.join(self.tempdir, 'a')
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with open(python, 'w') as fd:
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fd.write('#!/usr/bin/env python\n')
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self.makeEmptyFile('b')
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with open(os.path.join(self.tempdir, 'c'), 'w') as fd:
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fd.write('hello\nworld\n')
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python2 = os.path.join(self.tempdir, 'd')
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with open(python2, 'w') as fd:
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fd.write('#!/usr/bin/env python2\n')
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python3 = os.path.join(self.tempdir, 'e')
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with open(python3, 'w') as fd:
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fd.write('#!/usr/bin/env python3\n')
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pythonw = os.path.join(self.tempdir, 'f')
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with open(pythonw, 'w') as fd:
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fd.write('#!/usr/bin/env pythonw\n')
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self.assertEqual(
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sorted(iterSourceCode([self.tempdir])),
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sorted([python, python2, python3, pythonw]))
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def test_multipleDirectories(self):
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"""
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L{iterSourceCode} can be given multiple directories. It will recurse
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into each of them.
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"""
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foopath = os.path.join(self.tempdir, 'foo')
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barpath = os.path.join(self.tempdir, 'bar')
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os.mkdir(foopath)
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apath = self.makeEmptyFile('foo', 'a.py')
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os.mkdir(barpath)
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bpath = self.makeEmptyFile('bar', 'b.py')
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self.assertEqual(
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sorted(iterSourceCode([foopath, barpath])),
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sorted([apath, bpath]))
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def test_explicitFiles(self):
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"""
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If one of the paths given to L{iterSourceCode} is not a directory but
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a file, it will include that in its output.
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"""
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epath = self.makeEmptyFile('e.py')
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self.assertEqual(list(iterSourceCode([epath])),
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[epath])
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class TestReporter(TestCase):
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"""
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Tests for L{Reporter}.
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"""
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def test_syntaxError(self):
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"""
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C{syntaxError} reports that there was a syntax error in the source
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file. It reports to the error stream and includes the filename, line
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number, error message, actual line of source and a caret pointing to
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where the error is.
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"""
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err = StringIO()
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reporter = Reporter(None, err)
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reporter.syntaxError('foo.py', 'a problem', 3,
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8 if sys.version_info >= (3, 8) else 7,
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'bad line of source')
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self.assertEqual(
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("foo.py:3:8: a problem\n"
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"bad line of source\n"
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" ^\n"),
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err.getvalue())
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def test_syntaxErrorNoOffset(self):
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"""
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C{syntaxError} doesn't include a caret pointing to the error if
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C{offset} is passed as C{None}.
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"""
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err = StringIO()
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reporter = Reporter(None, err)
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reporter.syntaxError('foo.py', 'a problem', 3, None,
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'bad line of source')
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self.assertEqual(
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("foo.py:3: a problem\n"
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"bad line of source\n"),
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err.getvalue())
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def test_multiLineSyntaxError(self):
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"""
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If there's a multi-line syntax error, then we only report the last
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line. The offset is adjusted so that it is relative to the start of
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the last line.
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"""
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err = StringIO()
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lines = [
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'bad line of source',
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'more bad lines of source',
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]
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reporter = Reporter(None, err)
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reporter.syntaxError('foo.py', 'a problem', 3, len(lines[0]) + 7,
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'\n'.join(lines))
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column = 25 if sys.version_info >= (3, 8) else 7
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self.assertEqual(
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("foo.py:3:%d: a problem\n" % column +
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lines[-1] + "\n" +
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" " * (column - 1) + "^\n"),
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err.getvalue())
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def test_unexpectedError(self):
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"""
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C{unexpectedError} reports an error processing a source file.
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"""
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err = StringIO()
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reporter = Reporter(None, err)
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reporter.unexpectedError('source.py', 'error message')
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self.assertEqual('source.py: error message\n', err.getvalue())
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def test_flake(self):
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"""
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C{flake} reports a code warning from Pyflakes. It is exactly the
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str() of a L{pyflakes.messages.Message}.
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"""
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out = StringIO()
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reporter = Reporter(out, None)
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message = UnusedImport('foo.py', Node(42), 'bar')
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reporter.flake(message)
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self.assertEqual(out.getvalue(), "%s\n" % (message,))
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class CheckTests(TestCase):
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"""
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Tests for L{check} and L{checkPath} which check a file for flakes.
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"""
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@contextlib.contextmanager
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def makeTempFile(self, content):
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"""
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Make a temporary file containing C{content} and return a path to it.
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"""
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fd, name = tempfile.mkstemp()
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try:
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with os.fdopen(fd, 'wb') as f:
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if not hasattr(content, 'decode'):
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content = content.encode('ascii')
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f.write(content)
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yield name
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finally:
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os.remove(name)
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def assertHasErrors(self, path, errorList):
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"""
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Assert that C{path} causes errors.
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@param path: A path to a file to check.
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@param errorList: A list of errors expected to be printed to stderr.
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"""
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err = StringIO()
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count = withStderrTo(err, checkPath, path)
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self.assertEqual(
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(count, err.getvalue()), (len(errorList), ''.join(errorList)))
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def getErrors(self, path):
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"""
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Get any warnings or errors reported by pyflakes for the file at C{path}.
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@param path: The path to a Python file on disk that pyflakes will check.
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@return: C{(count, log)}, where C{count} is the number of warnings or
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errors generated, and log is a list of those warnings, presented
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as structured data. See L{LoggingReporter} for more details.
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"""
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log = []
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reporter = LoggingReporter(log)
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count = checkPath(path, reporter)
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return count, log
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def test_legacyScript(self):
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from pyflakes.scripts import pyflakes as script_pyflakes
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self.assertIs(script_pyflakes.checkPath, checkPath)
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def test_missingTrailingNewline(self):
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"""
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Source which doesn't end with a newline shouldn't cause any
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exception to be raised nor an error indicator to be returned by
|
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|
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L{check}.
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"""
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with self.makeTempFile("def foo():\n\tpass\n\t") as fName:
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self.assertHasErrors(fName, [])
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def test_checkPathNonExisting(self):
|
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"""
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L{checkPath} handles non-existing files.
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"""
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|
|
count, errors = self.getErrors('extremo')
|
||
|
|
self.assertEqual(count, 1)
|
||
|
|
self.assertEqual(
|
||
|
|
errors,
|
||
|
|
[('unexpectedError', 'extremo', 'No such file or directory')])
|
||
|
|
|
||
|
|
def test_multilineSyntaxError(self):
|
||
|
|
"""
|
||
|
|
Source which includes a syntax error which results in the raised
|
||
|
|
L{SyntaxError.text} containing multiple lines of source are reported
|
||
|
|
with only the last line of that source.
|
||
|
|
"""
|
||
|
|
source = """\
|
||
|
|
def foo():
|
||
|
|
'''
|
||
|
|
|
||
|
|
def bar():
|
||
|
|
pass
|
||
|
|
|
||
|
|
def baz():
|
||
|
|
'''quux'''
|
||
|
|
"""
|
||
|
|
|
||
|
|
# Sanity check - SyntaxError.text should be multiple lines, if it
|
||
|
|
# isn't, something this test was unprepared for has happened.
|
||
|
|
def evaluate(source):
|
||
|
|
exec(source)
|
||
|
|
try:
|
||
|
|
evaluate(source)
|
||
|
|
except SyntaxError:
|
||
|
|
e = sys.exc_info()[1]
|
||
|
|
if not PYPY:
|
||
|
|
self.assertTrue(e.text.count('\n') > 1)
|
||
|
|
else:
|
||
|
|
self.fail()
|
||
|
|
|
||
|
|
with self.makeTempFile(source) as sourcePath:
|
||
|
|
if PYPY:
|
||
|
|
message = 'EOF while scanning triple-quoted string literal'
|
||
|
|
else:
|
||
|
|
message = 'invalid syntax'
|
||
|
|
|
||
|
|
column = 8 if sys.version_info >= (3, 8) else 11
|
||
|
|
self.assertHasErrors(
|
||
|
|
sourcePath,
|
||
|
|
["""\
|
||
|
|
%s:8:%d: %s
|
||
|
|
'''quux'''
|
||
|
|
%s^
|
||
|
|
""" % (sourcePath, column, message, ' ' * (column - 1))])
|
||
|
|
|
||
|
|
def test_eofSyntaxError(self):
|
||
|
|
"""
|
||
|
|
The error reported for source files which end prematurely causing a
|
||
|
|
syntax error reflects the cause for the syntax error.
|
||
|
|
"""
|
||
|
|
with self.makeTempFile("def foo(") as sourcePath:
|
||
|
|
if PYPY:
|
||
|
|
result = """\
|
||
|
|
%s:1:7: parenthesis is never closed
|
||
|
|
def foo(
|
||
|
|
^
|
||
|
|
""" % (sourcePath,)
|
||
|
|
else:
|
||
|
|
result = """\
|
||
|
|
%s:1:9: unexpected EOF while parsing
|
||
|
|
def foo(
|
||
|
|
^
|
||
|
|
""" % (sourcePath,)
|
||
|
|
|
||
|
|
self.assertHasErrors(
|
||
|
|
sourcePath,
|
||
|
|
[result])
|
||
|
|
|
||
|
|
def test_eofSyntaxErrorWithTab(self):
|
||
|
|
"""
|
||
|
|
The error reported for source files which end prematurely causing a
|
||
|
|
syntax error reflects the cause for the syntax error.
|
||
|
|
"""
|
||
|
|
with self.makeTempFile("if True:\n\tfoo =") as sourcePath:
|
||
|
|
column = 5 if PYPY else 7
|
||
|
|
last_line = '\t ^' if PYPY else '\t ^'
|
||
|
|
|
||
|
|
self.assertHasErrors(
|
||
|
|
sourcePath,
|
||
|
|
["""\
|
||
|
|
%s:2:%s: invalid syntax
|
||
|
|
\tfoo =
|
||
|
|
%s
|
||
|
|
""" % (sourcePath, column, last_line)])
|
||
|
|
|
||
|
|
def test_nonDefaultFollowsDefaultSyntaxError(self):
|
||
|
|
"""
|
||
|
|
Source which has a non-default argument following a default argument
|
||
|
|
should include the line number of the syntax error. However these
|
||
|
|
exceptions do not include an offset.
|
||
|
|
"""
|
||
|
|
source = """\
|
||
|
|
def foo(bar=baz, bax):
|
||
|
|
pass
|
||
|
|
"""
|
||
|
|
with self.makeTempFile(source) as sourcePath:
|
||
|
|
if ERROR_HAS_LAST_LINE:
|
||
|
|
column = 9 if sys.version_info >= (3, 8) else 8
|
||
|
|
last_line = ' ' * (column - 1) + '^\n'
|
||
|
|
columnstr = '%d:' % column
|
||
|
|
else:
|
||
|
|
last_line = columnstr = ''
|
||
|
|
self.assertHasErrors(
|
||
|
|
sourcePath,
|
||
|
|
["""\
|
||
|
|
%s:1:%s non-default argument follows default argument
|
||
|
|
def foo(bar=baz, bax):
|
||
|
|
%s""" % (sourcePath, columnstr, last_line)])
|
||
|
|
|
||
|
|
def test_nonKeywordAfterKeywordSyntaxError(self):
|
||
|
|
"""
|
||
|
|
Source which has a non-keyword argument after a keyword argument should
|
||
|
|
include the line number of the syntax error. However these exceptions
|
||
|
|
do not include an offset.
|
||
|
|
"""
|
||
|
|
source = """\
|
||
|
|
foo(bar=baz, bax)
|
||
|
|
"""
|
||
|
|
with self.makeTempFile(source) as sourcePath:
|
||
|
|
if ERROR_HAS_LAST_LINE:
|
||
|
|
column = 14 if sys.version_info >= (3, 8) else 13
|
||
|
|
last_line = ' ' * (column - 1) + '^\n'
|
||
|
|
columnstr = '%d:' % column
|
||
|
|
else:
|
||
|
|
last_line = columnstr = ''
|
||
|
|
|
||
|
|
if sys.version_info >= (3, 5):
|
||
|
|
message = 'positional argument follows keyword argument'
|
||
|
|
else:
|
||
|
|
message = 'non-keyword arg after keyword arg'
|
||
|
|
|
||
|
|
self.assertHasErrors(
|
||
|
|
sourcePath,
|
||
|
|
["""\
|
||
|
|
%s:1:%s %s
|
||
|
|
foo(bar=baz, bax)
|
||
|
|
%s""" % (sourcePath, columnstr, message, last_line)])
|
||
|
|
|
||
|
|
def test_invalidEscape(self):
|
||
|
|
"""
|
||
|
|
The invalid escape syntax raises ValueError in Python 2
|
||
|
|
"""
|
||
|
|
ver = sys.version_info
|
||
|
|
# ValueError: invalid \x escape
|
||
|
|
with self.makeTempFile(r"foo = '\xyz'") as sourcePath:
|
||
|
|
if ver < (3,):
|
||
|
|
decoding_error = "%s: problem decoding source\n" % (sourcePath,)
|
||
|
|
else:
|
||
|
|
position_end = 1
|
||
|
|
if PYPY:
|
||
|
|
column = 6
|
||
|
|
else:
|
||
|
|
column = 7
|
||
|
|
# Column has been "fixed" since 3.2.4 and 3.3.1
|
||
|
|
if ver < (3, 2, 4) or ver[:3] == (3, 3, 0):
|
||
|
|
position_end = 2
|
||
|
|
|
||
|
|
if ERROR_HAS_LAST_LINE:
|
||
|
|
last_line = '%s^\n' % (' ' * (column - 1))
|
||
|
|
else:
|
||
|
|
last_line = ''
|
||
|
|
|
||
|
|
decoding_error = """\
|
||
|
|
%s:1:%d: (unicode error) 'unicodeescape' codec can't decode bytes \
|
||
|
|
in position 0-%d: truncated \\xXX escape
|
||
|
|
foo = '\\xyz'
|
||
|
|
%s""" % (sourcePath, column, position_end, last_line)
|
||
|
|
|
||
|
|
self.assertHasErrors(
|
||
|
|
sourcePath, [decoding_error])
|
||
|
|
|
||
|
|
@skipIf(sys.platform == 'win32', 'unsupported on Windows')
|
||
|
|
def test_permissionDenied(self):
|
||
|
|
"""
|
||
|
|
If the source file is not readable, this is reported on standard
|
||
|
|
error.
|
||
|
|
"""
|
||
|
|
if os.getuid() == 0:
|
||
|
|
self.skipTest('root user can access all files regardless of '
|
||
|
|
'permissions')
|
||
|
|
with self.makeTempFile('') as sourcePath:
|
||
|
|
os.chmod(sourcePath, 0)
|
||
|
|
count, errors = self.getErrors(sourcePath)
|
||
|
|
self.assertEqual(count, 1)
|
||
|
|
self.assertEqual(
|
||
|
|
errors,
|
||
|
|
[('unexpectedError', sourcePath, "Permission denied")])
|
||
|
|
|
||
|
|
def test_pyflakesWarning(self):
|
||
|
|
"""
|
||
|
|
If the source file has a pyflakes warning, this is reported as a
|
||
|
|
'flake'.
|
||
|
|
"""
|
||
|
|
with self.makeTempFile("import foo") as sourcePath:
|
||
|
|
count, errors = self.getErrors(sourcePath)
|
||
|
|
self.assertEqual(count, 1)
|
||
|
|
self.assertEqual(
|
||
|
|
errors, [('flake', str(UnusedImport(sourcePath, Node(1), 'foo')))])
|
||
|
|
|
||
|
|
def test_encodedFileUTF8(self):
|
||
|
|
"""
|
||
|
|
If source file declares the correct encoding, no error is reported.
|
||
|
|
"""
|
||
|
|
SNOWMAN = unichr(0x2603)
|
||
|
|
source = ("""\
|
||
|
|
# coding: utf-8
|
||
|
|
x = "%s"
|
||
|
|
""" % SNOWMAN).encode('utf-8')
|
||
|
|
with self.makeTempFile(source) as sourcePath:
|
||
|
|
self.assertHasErrors(sourcePath, [])
|
||
|
|
|
||
|
|
def test_CRLFLineEndings(self):
|
||
|
|
"""
|
||
|
|
Source files with Windows CR LF line endings are parsed successfully.
|
||
|
|
"""
|
||
|
|
with self.makeTempFile("x = 42\r\n") as sourcePath:
|
||
|
|
self.assertHasErrors(sourcePath, [])
|
||
|
|
|
||
|
|
def test_misencodedFileUTF8(self):
|
||
|
|
"""
|
||
|
|
If a source file contains bytes which cannot be decoded, this is
|
||
|
|
reported on stderr.
|
||
|
|
"""
|
||
|
|
SNOWMAN = unichr(0x2603)
|
||
|
|
source = ("""\
|
||
|
|
# coding: ascii
|
||
|
|
x = "%s"
|
||
|
|
""" % SNOWMAN).encode('utf-8')
|
||
|
|
with self.makeTempFile(source) as sourcePath:
|
||
|
|
if PYPY and sys.version_info < (3, ):
|
||
|
|
message = ('\'ascii\' codec can\'t decode byte 0xe2 '
|
||
|
|
'in position 21: ordinal not in range(128)')
|
||
|
|
result = """\
|
||
|
|
%s:0:0: %s
|
||
|
|
x = "\xe2\x98\x83"
|
||
|
|
^\n""" % (sourcePath, message)
|
||
|
|
|
||
|
|
else:
|
||
|
|
message = 'problem decoding source'
|
||
|
|
result = "%s: problem decoding source\n" % (sourcePath,)
|
||
|
|
|
||
|
|
self.assertHasErrors(
|
||
|
|
sourcePath, [result])
|
||
|
|
|
||
|
|
def test_misencodedFileUTF16(self):
|
||
|
|
"""
|
||
|
|
If a source file contains bytes which cannot be decoded, this is
|
||
|
|
reported on stderr.
|
||
|
|
"""
|
||
|
|
SNOWMAN = unichr(0x2603)
|
||
|
|
source = ("""\
|
||
|
|
# coding: ascii
|
||
|
|
x = "%s"
|
||
|
|
""" % SNOWMAN).encode('utf-16')
|
||
|
|
with self.makeTempFile(source) as sourcePath:
|
||
|
|
self.assertHasErrors(
|
||
|
|
sourcePath, ["%s: problem decoding source\n" % (sourcePath,)])
|
||
|
|
|
||
|
|
def test_checkRecursive(self):
|
||
|
|
"""
|
||
|
|
L{checkRecursive} descends into each directory, finding Python files
|
||
|
|
and reporting problems.
|
||
|
|
"""
|
||
|
|
tempdir = tempfile.mkdtemp()
|
||
|
|
try:
|
||
|
|
os.mkdir(os.path.join(tempdir, 'foo'))
|
||
|
|
file1 = os.path.join(tempdir, 'foo', 'bar.py')
|
||
|
|
with open(file1, 'wb') as fd:
|
||
|
|
fd.write("import baz\n".encode('ascii'))
|
||
|
|
file2 = os.path.join(tempdir, 'baz.py')
|
||
|
|
with open(file2, 'wb') as fd:
|
||
|
|
fd.write("import contraband".encode('ascii'))
|
||
|
|
log = []
|
||
|
|
reporter = LoggingReporter(log)
|
||
|
|
warnings = checkRecursive([tempdir], reporter)
|
||
|
|
self.assertEqual(warnings, 2)
|
||
|
|
self.assertEqual(
|
||
|
|
sorted(log),
|
||
|
|
sorted([('flake', str(UnusedImport(file1, Node(1), 'baz'))),
|
||
|
|
('flake',
|
||
|
|
str(UnusedImport(file2, Node(1), 'contraband')))]))
|
||
|
|
finally:
|
||
|
|
shutil.rmtree(tempdir)
|
||
|
|
|
||
|
|
|
||
|
|
class IntegrationTests(TestCase):
|
||
|
|
"""
|
||
|
|
Tests of the pyflakes script that actually spawn the script.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def setUp(self):
|
||
|
|
self.tempdir = tempfile.mkdtemp()
|
||
|
|
self.tempfilepath = os.path.join(self.tempdir, 'temp')
|
||
|
|
|
||
|
|
def tearDown(self):
|
||
|
|
shutil.rmtree(self.tempdir)
|
||
|
|
|
||
|
|
def getPyflakesBinary(self):
|
||
|
|
"""
|
||
|
|
Return the path to the pyflakes binary.
|
||
|
|
"""
|
||
|
|
import pyflakes
|
||
|
|
package_dir = os.path.dirname(pyflakes.__file__)
|
||
|
|
return os.path.join(package_dir, '..', 'bin', 'pyflakes')
|
||
|
|
|
||
|
|
def runPyflakes(self, paths, stdin=None):
|
||
|
|
"""
|
||
|
|
Launch a subprocess running C{pyflakes}.
|
||
|
|
|
||
|
|
@param paths: Command-line arguments to pass to pyflakes.
|
||
|
|
@param stdin: Text to use as stdin.
|
||
|
|
@return: C{(returncode, stdout, stderr)} of the completed pyflakes
|
||
|
|
process.
|
||
|
|
"""
|
||
|
|
env = dict(os.environ)
|
||
|
|
env['PYTHONPATH'] = os.pathsep.join(sys.path)
|
||
|
|
command = [sys.executable, self.getPyflakesBinary()]
|
||
|
|
command.extend(paths)
|
||
|
|
if stdin:
|
||
|
|
p = subprocess.Popen(command, env=env, stdin=subprocess.PIPE,
|
||
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
||
|
|
(stdout, stderr) = p.communicate(stdin.encode('ascii'))
|
||
|
|
else:
|
||
|
|
p = subprocess.Popen(command, env=env,
|
||
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
||
|
|
(stdout, stderr) = p.communicate()
|
||
|
|
rv = p.wait()
|
||
|
|
if sys.version_info >= (3,):
|
||
|
|
stdout = stdout.decode('utf-8')
|
||
|
|
stderr = stderr.decode('utf-8')
|
||
|
|
# Workaround https://bitbucket.org/pypy/pypy/issues/2350
|
||
|
|
if PYPY and PY2 and WIN:
|
||
|
|
stderr = stderr.replace('\r\r\n', '\r\n')
|
||
|
|
return (stdout, stderr, rv)
|
||
|
|
|
||
|
|
def test_goodFile(self):
|
||
|
|
"""
|
||
|
|
When a Python source file is all good, the return code is zero and no
|
||
|
|
messages are printed to either stdout or stderr.
|
||
|
|
"""
|
||
|
|
open(self.tempfilepath, 'a').close()
|
||
|
|
d = self.runPyflakes([self.tempfilepath])
|
||
|
|
self.assertEqual(d, ('', '', 0))
|
||
|
|
|
||
|
|
def test_fileWithFlakes(self):
|
||
|
|
"""
|
||
|
|
When a Python source file has warnings, the return code is non-zero
|
||
|
|
and the warnings are printed to stdout.
|
||
|
|
"""
|
||
|
|
with open(self.tempfilepath, 'wb') as fd:
|
||
|
|
fd.write("import contraband\n".encode('ascii'))
|
||
|
|
d = self.runPyflakes([self.tempfilepath])
|
||
|
|
expected = UnusedImport(self.tempfilepath, Node(1), 'contraband')
|
||
|
|
self.assertEqual(d, ("%s%s" % (expected, os.linesep), '', 1))
|
||
|
|
|
||
|
|
def test_errors_io(self):
|
||
|
|
"""
|
||
|
|
When pyflakes finds errors with the files it's given, (if they don't
|
||
|
|
exist, say), then the return code is non-zero and the errors are
|
||
|
|
printed to stderr.
|
||
|
|
"""
|
||
|
|
d = self.runPyflakes([self.tempfilepath])
|
||
|
|
error_msg = '%s: No such file or directory%s' % (self.tempfilepath,
|
||
|
|
os.linesep)
|
||
|
|
self.assertEqual(d, ('', error_msg, 1))
|
||
|
|
|
||
|
|
def test_errors_syntax(self):
|
||
|
|
"""
|
||
|
|
When pyflakes finds errors with the files it's given, (if they don't
|
||
|
|
exist, say), then the return code is non-zero and the errors are
|
||
|
|
printed to stderr.
|
||
|
|
"""
|
||
|
|
with open(self.tempfilepath, 'wb') as fd:
|
||
|
|
fd.write("import".encode('ascii'))
|
||
|
|
d = self.runPyflakes([self.tempfilepath])
|
||
|
|
error_msg = '{0}:1:{2}: invalid syntax{1}import{1} {3}^{1}'.format(
|
||
|
|
self.tempfilepath, os.linesep, 5 if PYPY else 7, '' if PYPY else ' ')
|
||
|
|
self.assertEqual(d, ('', error_msg, 1))
|
||
|
|
|
||
|
|
def test_readFromStdin(self):
|
||
|
|
"""
|
||
|
|
If no arguments are passed to C{pyflakes} then it reads from stdin.
|
||
|
|
"""
|
||
|
|
d = self.runPyflakes([], stdin='import contraband')
|
||
|
|
expected = UnusedImport('<stdin>', Node(1), 'contraband')
|
||
|
|
self.assertEqual(d, ("%s%s" % (expected, os.linesep), '', 1))
|
||
|
|
|
||
|
|
|
||
|
|
class TestMain(IntegrationTests):
|
||
|
|
"""
|
||
|
|
Tests of the pyflakes main function.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def runPyflakes(self, paths, stdin=None):
|
||
|
|
try:
|
||
|
|
with SysStreamCapturing(stdin) as capture:
|
||
|
|
main(args=paths)
|
||
|
|
except SystemExit as e:
|
||
|
|
self.assertIsInstance(e.code, bool)
|
||
|
|
rv = int(e.code)
|
||
|
|
return (capture.output, capture.error, rv)
|
||
|
|
else:
|
||
|
|
raise RuntimeError('SystemExit not raised')
|