/usr/lib/python2.7/dist-packages/nose/plugins/cover.py is in python-nose 1.3.7-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 | """If you have Ned Batchelder's coverage_ module installed, you may activate a
coverage report with the ``--with-coverage`` switch or NOSE_WITH_COVERAGE
environment variable. The coverage report will cover any python source module
imported after the start of the test run, excluding modules that match
testMatch. If you want to include those modules too, use the ``--cover-tests``
switch, or set the NOSE_COVER_TESTS environment variable to a true value. To
restrict the coverage report to modules from a particular package or packages,
use the ``--cover-package`` switch or the NOSE_COVER_PACKAGE environment
variable.
.. _coverage: http://www.nedbatchelder.com/code/modules/coverage.html
"""
import logging
import re
import sys
import StringIO
from nose.plugins.base import Plugin
from nose.util import src, tolist
log = logging.getLogger(__name__)
class Coverage(Plugin):
"""
Activate a coverage report using Ned Batchelder's coverage module.
"""
coverTests = False
coverPackages = None
coverInstance = None
coverErase = False
coverMinPercentage = None
score = 200
status = {}
def options(self, parser, env):
"""
Add options to command line.
"""
super(Coverage, self).options(parser, env)
parser.add_option("--cover-package", action="append",
default=env.get('NOSE_COVER_PACKAGE'),
metavar="PACKAGE",
dest="cover_packages",
help="Restrict coverage output to selected packages "
"[NOSE_COVER_PACKAGE]")
parser.add_option("--cover-erase", action="store_true",
default=env.get('NOSE_COVER_ERASE'),
dest="cover_erase",
help="Erase previously collected coverage "
"statistics before run")
parser.add_option("--cover-tests", action="store_true",
dest="cover_tests",
default=env.get('NOSE_COVER_TESTS'),
help="Include test modules in coverage report "
"[NOSE_COVER_TESTS]")
parser.add_option("--cover-min-percentage", action="store",
dest="cover_min_percentage",
default=env.get('NOSE_COVER_MIN_PERCENTAGE'),
help="Minimum percentage of coverage for tests "
"to pass [NOSE_COVER_MIN_PERCENTAGE]")
parser.add_option("--cover-inclusive", action="store_true",
dest="cover_inclusive",
default=env.get('NOSE_COVER_INCLUSIVE'),
help="Include all python files under working "
"directory in coverage report. Useful for "
"discovering holes in test coverage if not all "
"files are imported by the test suite. "
"[NOSE_COVER_INCLUSIVE]")
parser.add_option("--cover-html", action="store_true",
default=env.get('NOSE_COVER_HTML'),
dest='cover_html',
help="Produce HTML coverage information")
parser.add_option('--cover-html-dir', action='store',
default=env.get('NOSE_COVER_HTML_DIR', 'cover'),
dest='cover_html_dir',
metavar='DIR',
help='Produce HTML coverage information in dir')
parser.add_option("--cover-branches", action="store_true",
default=env.get('NOSE_COVER_BRANCHES'),
dest="cover_branches",
help="Include branch coverage in coverage report "
"[NOSE_COVER_BRANCHES]")
parser.add_option("--cover-xml", action="store_true",
default=env.get('NOSE_COVER_XML'),
dest="cover_xml",
help="Produce XML coverage information")
parser.add_option("--cover-xml-file", action="store",
default=env.get('NOSE_COVER_XML_FILE', 'coverage.xml'),
dest="cover_xml_file",
metavar="FILE",
help="Produce XML coverage information in file")
def configure(self, options, conf):
"""
Configure plugin.
"""
try:
self.status.pop('active')
except KeyError:
pass
super(Coverage, self).configure(options, conf)
if self.enabled:
try:
import coverage
if not hasattr(coverage, 'coverage'):
raise ImportError("Unable to import coverage module")
except ImportError:
log.error("Coverage not available: "
"unable to import coverage module")
self.enabled = False
return
self.conf = conf
self.coverErase = options.cover_erase
self.coverTests = options.cover_tests
self.coverPackages = []
if options.cover_packages:
if isinstance(options.cover_packages, (list, tuple)):
cover_packages = options.cover_packages
else:
cover_packages = [options.cover_packages]
for pkgs in [tolist(x) for x in cover_packages]:
self.coverPackages.extend(pkgs)
self.coverInclusive = options.cover_inclusive
if self.coverPackages:
log.info("Coverage report will include only packages: %s",
self.coverPackages)
self.coverHtmlDir = None
if options.cover_html:
self.coverHtmlDir = options.cover_html_dir
log.debug('Will put HTML coverage report in %s', self.coverHtmlDir)
self.coverBranches = options.cover_branches
self.coverXmlFile = None
if options.cover_min_percentage:
self.coverMinPercentage = int(options.cover_min_percentage.rstrip('%'))
if options.cover_xml:
self.coverXmlFile = options.cover_xml_file
log.debug('Will put XML coverage report in %s', self.coverXmlFile)
if self.enabled:
self.status['active'] = True
self.coverInstance = coverage.coverage(auto_data=False,
branch=self.coverBranches, data_suffix=conf.worker,
source=self.coverPackages)
self.coverInstance._warn_no_data = False
self.coverInstance.is_worker = conf.worker
self.coverInstance.exclude('#pragma[: ]+[nN][oO] [cC][oO][vV][eE][rR]')
log.debug("Coverage begin")
self.skipModules = sys.modules.keys()[:]
if self.coverErase:
log.debug("Clearing previously collected coverage statistics")
self.coverInstance.combine()
self.coverInstance.erase()
if not self.coverInstance.is_worker:
self.coverInstance.load()
self.coverInstance.start()
def beforeTest(self, *args, **kwargs):
"""
Begin recording coverage information.
"""
if self.coverInstance.is_worker:
self.coverInstance.load()
self.coverInstance.start()
def afterTest(self, *args, **kwargs):
"""
Stop recording coverage information.
"""
if self.coverInstance.is_worker:
self.coverInstance.stop()
self.coverInstance.save()
def report(self, stream):
"""
Output code coverage report.
"""
log.debug("Coverage report")
self.coverInstance.stop()
self.coverInstance.combine()
self.coverInstance.save()
modules = [module
for name, module in sys.modules.items()
if self.wantModuleCoverage(name, module)]
log.debug("Coverage report will cover modules: %s", modules)
self.coverInstance.report(modules, file=stream)
import coverage
if self.coverHtmlDir:
log.debug("Generating HTML coverage report")
try:
self.coverInstance.html_report(modules, self.coverHtmlDir)
except coverage.misc.CoverageException, e:
log.warning("Failed to generate HTML report: %s" % str(e))
if self.coverXmlFile:
log.debug("Generating XML coverage report")
try:
self.coverInstance.xml_report(modules, self.coverXmlFile)
except coverage.misc.CoverageException, e:
log.warning("Failed to generate XML report: %s" % str(e))
# make sure we have minimum required coverage
if self.coverMinPercentage:
f = StringIO.StringIO()
self.coverInstance.report(modules, file=f)
multiPackageRe = (r'-------\s\w+\s+\d+\s+\d+(?:\s+\d+\s+\d+)?'
r'\s+(\d+)%\s+\d*\s{0,1}$')
singlePackageRe = (r'-------\s[\w./]+\s+\d+\s+\d+(?:\s+\d+\s+\d+)?'
r'\s+(\d+)%(?:\s+[-\d, ]+)\s{0,1}$')
m = re.search(multiPackageRe, f.getvalue())
if m is None:
m = re.search(singlePackageRe, f.getvalue())
if m:
percentage = int(m.groups()[0])
if percentage < self.coverMinPercentage:
log.error('TOTAL Coverage did not reach minimum '
'required: %d%%' % self.coverMinPercentage)
sys.exit(1)
else:
log.error("No total percentage was found in coverage output, "
"something went wrong.")
def wantModuleCoverage(self, name, module):
if not hasattr(module, '__file__'):
log.debug("no coverage of %s: no __file__", name)
return False
module_file = src(module.__file__)
if not module_file or not module_file.endswith('.py'):
log.debug("no coverage of %s: not a python file", name)
return False
if self.coverPackages:
for package in self.coverPackages:
if (re.findall(r'^%s\b' % re.escape(package), name)
and (self.coverTests
or not self.conf.testMatch.search(name))):
log.debug("coverage for %s", name)
return True
if name in self.skipModules:
log.debug("no coverage for %s: loaded before coverage start",
name)
return False
if self.conf.testMatch.search(name) and not self.coverTests:
log.debug("no coverage for %s: is a test", name)
return False
# accept any package that passed the previous tests, unless
# coverPackages is on -- in that case, if we wanted this
# module, we would have already returned True
return not self.coverPackages
def wantFile(self, file, package=None):
"""If inclusive coverage enabled, return true for all source files
in wanted packages.
"""
if self.coverInclusive:
if file.endswith(".py"):
if package and self.coverPackages:
for want in self.coverPackages:
if package.startswith(want):
return True
else:
return True
return None
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