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"""Code common to test runner plugins."""
import optparse, sys
import coverage
from coverage.cmdline import pattern_list
class CoverageTestWrapper(object):
"""A coverage test wrapper.
1) Setup the with the parsed options
2) Call start()
3) Run your tests
4) Call finish()
5) Improve your code coverage ;)
"""
coverPackages = None
def __init__(self, options, _covpkg=coverage):
# _covpkg is for dependency injection, so we can test this code.
self.options = options
self.covpkg = _covpkg
self.coverage = None
self.coverTests = options.cover_tests # TODO: This isn't used anywhere
self.coverPackages = options.cover_package
self.omit = self.include = None
def start(self):
"""Start coverage before the test suite."""
# cover_omit is a ',' separated list if provided
self.omit = pattern_list(self.options.cover_omit)
self.include = pattern_list(self.options.cover_omit)
self.coverage = self.covpkg.coverage(
config_file = self.options.cover_rcfile,
data_suffix = bool(self.options.cover_parallel_mode),
cover_pylib = self.options.cover_pylib,
timid = self.options.cover_timid,
branch = self.options.cover_branch,
include = self.include,
omit = self.omit,
)
self.coverage.start()
def finish(self, stream=None):
"""Finish coverage after the test suite."""
self.coverage.stop()
self.coverage.save()
modules = [module for name, module in sys.modules.items()
if self._want_module(name, module)]
# Remaining actions are reporting, with some common options.
report_args = dict(
morfs = modules,
ignore_errors = True,
omit = self.omit,
include = self.include,
)
reports = self.options.cover_reports or 'report'
if 'report' in reports:
self.coverage.report(
show_missing=self.options.cover_show_missing,
file=stream, **report_args)
if 'annotate' in reports:
self.coverage.annotate(
directory=self.options.cover_directory, **report_args)
if 'html' in reports:
self.coverage.html_report(
directory=self.options.cover_directory, **report_args)
if 'xml' in reports:
outfile = self.options.cover_outfile
if outfile == '-':
outfile = None
self.coverage.xml_report(outfile=outfile, **report_args)
return
def _want_module(self, name, module):
"""Determine if this module should be reported on."""
for package in self.coverPackages:
if module is not None and name.startswith(package):
return True
return False
# The command-line options for the plugin.
OPTIONS = [
optparse.Option('--cover-rcfile', action='store', metavar="RCFILE",
help="Specify configuration file. ['.coveragerc']",
default=True),
optparse.Option('--cover-report', action='append', default=[],
dest='cover_reports', type="choice",
choices=['annotate', 'html', 'report', 'xml'],
help=("Choose what coverage report(s) to create: "
"annotate: Annotated source files; "
"html: Browsable HTML report; "
"report: Simple text report; "
"xml: Cobertura-compatible XML report.")
),
optparse.Option('--cover-package', action='append', default=[],
dest="cover_package", metavar="COVER_PACKAGE",
help=("Restrict coverage output to selected package "
"- can be specified multiple times")),
optparse.Option("--cover-tests", action="store_true", dest="cover_tests",
metavar="[NOSE_COVER_TESTS]", default=False,
help="Include test modules in coverage report "),
optparse.Option('--cover-branch', action='store_true',
help="Measure branch execution."),
optparse.Option('--cover-directory', action='store', metavar="DIR",
help="Write the output files to DIR."),
optparse.Option('--cover-pylib', action='store_true',
help=("Measure coverage even inside the Python installed "
"library, which isn't done by default.")),
optparse.Option('--cover-show-missing', action='store_true',
help=("Show line numbers of statements in each module "
"that weren't executed.")),
optparse.Option('--cover-include', action='store',
metavar="PAT1,PAT2,...", default='',
help=("Include files when their filename path matches one "
"of these file patterns.")),
optparse.Option('--cover-omit', action='store',
metavar="PAT1,PAT2,...", default='',
help=("Omit files when their filename path matches one "
"of these file patterns.")),
optparse.Option('--cover-outfile', action='store', metavar="OUTFILE",
help=("Write the XML report to this file. Defaults to "
"'coverage.xml'")),
optparse.Option('--cover-parallel-mode', action='store_true',
help=("Include the machine name and process id in the "
".coverage data file name.")),
optparse.Option('--cover-timid', action='store_true',
help=("Use a simpler but slower trace method. Try this "
"if you get seemingly impossible results!")),
optparse.Option('--cover-append', action='store_false',
help=("Append coverage data to .coverage, otherwise it "
"is started clean with each run."))
]
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