Source

SCons / src / test_pychecker.py

#!/usr/bin/env python
#
# __COPYRIGHT__
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#

__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"

"""
Use pychecker to catch various Python coding errors.
"""

import os
import os.path
import string
import sys

import TestSCons

test = TestSCons.TestSCons()

test.skip_test('Not ready for clean pychecker output; skipping test.\n')

try:
    import pychecker
except ImportError:
    pychecker = test.where_is('pychecker')
    if not pychecker:
        test.skip_test("Could not find 'pychecker'; skipping test(s).\n")
    program = pychecker
    default_arguments = []
else:
    pychecker = os.path.join(os.path.split(pychecker.__file__)[0], 'checker.py')
    program = sys.executable
    default_arguments = [pychecker]

try:
    cwd = os.environ['SCONS_CWD']
except KeyError:
    src_engine = os.environ['SCONS_LIB_DIR']
else:
    src_engine = os.path.join(cwd, 'build', 'scons-src', 'src', 'engine')
    if not os.path.exists(src_engine):
        src_engine = os.path.join(cwd, 'src', 'engine')

src_engine_ = os.path.join(src_engine, '')

MANIFEST = os.path.join(src_engine, 'MANIFEST.in')
files = string.split(open(MANIFEST).read())

files = filter(lambda f: f[-3:] == '.py', files)

ignore = [
    'SCons/compat/__init__.py',
    'SCons/compat/builtins.py',
    'SCons/compat/_subprocess.py',
]

u = {}
for file in files:
    u[file] = 1
for file in ignore:
    try:
        del u[file]
    except KeyError:
        pass

files = u.keys()

files.sort()

mismatches = []

default_arguments.extend([
    '--quiet',
    '--limit=1000',
])

if sys.platform == 'win32':
    default_arguments.extend([
        '--blacklist', '"pywintypes,pywintypes.error"',
    ])

per_file_arguments = {
    'SCons/__init__.py' : [
        '--varlist', '"__revision__,__version__,__build__,__buildsys__,__date__,__developer__"',
    ],
}

pywintypes_warning = "warning: couldn't find real module for class pywintypes.error (module name: pywintypes)\n"

os.environ['PYTHONPATH'] = src_engine

for file in files:

    file = os.path.join(src_engine, file)
    args = default_arguments + per_file_arguments.get(file, []) + [file]

    test.run(program=program, arguments=args, status=None, stderr=None)

    stdout = test.stdout()
    stdout = string.replace(stdout, src_engine_, '')

    stderr = test.stderr()
    stderr = string.replace(stderr, src_engine_, '')
    stderr = string.replace(stderr, pywintypes_warning, '')

    if test.status or stdout or stderr:
        mismatches.append('\n')
        mismatches.append(string.join([program] + args) + '\n')

        mismatches.append('STDOUT =====================================\n')
        mismatches.append(stdout)

        if stderr:
            mismatches.append('STDERR =====================================\n')
            mismatches.append(stderr)

if mismatches:
    print string.join(mismatches[1:], '')
    test.fail_test()

test.pass_test()
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