From 72c578fd4b0b4a5a43e18594339ac4ff26c376dc Mon Sep 17 00:00:00 2001 From: Luca Falavigna Date: Sat, 2 Jan 2010 20:56:27 +0100 Subject: Imported Upstream version 1.2.0.d20091224 --- src/test_interrupts.py | 146 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 src/test_interrupts.py (limited to 'src/test_interrupts.py') diff --git a/src/test_interrupts.py b/src/test_interrupts.py new file mode 100644 index 0000000..c7171f7 --- /dev/null +++ b/src/test_interrupts.py @@ -0,0 +1,146 @@ +#!/usr/bin/env python +# +# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 The SCons Foundation +# +# 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__ = "src/test_interrupts.py 4577 2009/12/27 19:44:43 scons" + +""" +Verify that the SCons source code contains only correct handling of +keyboard interrupts (e.g. Ctrl-C). +""" + +import os +import os.path +import re +import string +import time + +import TestSCons + +test = TestSCons.TestSCons() + +# We do not want statements of the form: +# try: +# # do something, e.g. +# return a['x'] +# except: +# # do the exception handling +# a['x'] = getx() +# return a['x'] +# +# The code above may catch a KeyboardInterrupt exception, which was not +# intended by the programmer. We check for these situations in all python +# source files. + +try: + cwd = os.environ['SCONS_CWD'] +except KeyError: + scons_lib_dir = os.environ['SCONS_LIB_DIR'] + MANIFEST = os.path.join(scons_lib_dir, 'MANIFEST.in') +else: + #cwd = os.getcwd() + scons_lib_dir = os.path.join(cwd, 'build', 'scons') + MANIFEST = os.path.join(scons_lib_dir, 'MANIFEST') + +# We expect precisely this many uncaught KeyboardInterrupt exceptions +# from the files in the following dictionary. + +expected_uncaught = { + 'engine/SCons/Job.py' : 5, + 'engine/SCons/Script/Main.py' : 1, + 'engine/SCons/Taskmaster.py' : 3, +} + +try: + fp = open(MANIFEST) +except IOError: + test.skip_test('%s does not exist; skipping test.\n' % MANIFEST) +else: + files = string.split(fp.read()) + files = filter(lambda f: f[-3:] == '.py', files) + +# some regexps to parse the python files +tryexc_pat = re.compile( +r'^(?P(?P *)(try|except)( [^\n]*)?:.*)',re.MULTILINE) +keyboardint_pat = re.compile(r' *except +([^,],)*KeyboardInterrupt([ ,][^\n]*)?:[^\n]*') +exceptall_pat = re.compile(r' *except(?: *| +Exception *, *[^: ]+):[^\n]*') + +uncaughtKeyboardInterrupt = 0 +for f in files: + contents = open(os.path.join(scons_lib_dir, f)).read() + try_except_lines = {} + lastend = 0 + while 1: + match = tryexc_pat.search( contents, lastend ) + if match is None: + break + #print match.groups() + lastend = match.end() + try: + indent_list = try_except_lines[match.group('indent')] + except: + indent_list = [] + line_num = 1 + string.count(contents[:match.start()], '\n') + indent_list.append( (line_num, match.group('try_or_except') ) ) + try_except_lines[match.group('indent')] = indent_list + uncaught_this_file = [] + for indent in try_except_lines.keys(): + exc_keyboardint_seen = 0 + exc_all_seen = 0 + for (l,statement) in try_except_lines[indent] + [(-1,indent + 'try')]: + #print "%4d %s" % (l,statement), + m1 = keyboardint_pat.match(statement) + m2 = exceptall_pat.match(statement) + if string.find(statement, indent + 'try') == 0: + if exc_all_seen and not exc_keyboardint_seen: + uncaught_this_file.append(line) + exc_keyboardint_seen = 0 + exc_all_seen = 0 + line = l + #print " -> reset" + elif m1 is not None: + exc_keyboardint_seen = 1 + #print " -> keyboard -> ", m1.groups() + elif m2 is not None: + exc_all_seen = 1 + #print " -> all -> ", m2.groups() + else: + pass + #print "Warning: unknown statement %s" % statement + expected_num = expected_uncaught.get(f, 0) + if expected_num != len(uncaught_this_file): + uncaughtKeyboardInterrupt = 1 + msg = "%s: expected %d uncaught interrupts, got %d:" + print msg % (f, expected_num, len(uncaught_this_file)) + for line in uncaught_this_file: + print " File %s:%d: Uncaught KeyboardInterrupt!" % (f,line) + +test.fail_test(uncaughtKeyboardInterrupt) + +test.pass_test() + +# Local Variables: +# tab-width:4 +# indent-tabs-mode:nil +# End: +# vim: set expandtab tabstop=4 shiftwidth=4: -- cgit v1.2.3