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"""
Write and report coverage data with 'coverage.py'.
"""
import py
import coverage
def pytest_addoption(parser):
"""
Get all the options from the coverage.runner and import them
"""
from coverage.runner import options
group = parser.getgroup('Coverage options')
for opt in options:
group._addoption_instance(opt)
def pytest_configure(config):
# Load the runner and start it up
if config.getvalue("cover_actions"):
config.pluginmanager.register(DoCover(config), "do_coverage")
class DoCover:
def __init__(self, config):
self.config = config
def pytest_sessionstart(self):
from coverage.runner import CoverageTestWrapper
self.coverage = CoverageTestWrapper(self.config.option)
# XXX maybe better to start/suspend/resume coverage
# for each single test item
self.coverage.start()
def pytest_terminal_summary(self, terminalreporter):
# Finished the tests start processing the coverage
config = terminalreporter.config
tw = terminalreporter._tw
tw.sep('-', 'coverage')
tw.line('Processing Coverage...')
self.coverage.finish()
# Monkey patch omit_filter to use regex patterns for file omits
def omit_filter(omit_prefixes, code_units):
import re
exclude_patterns = [re.compile(line.strip()) for line in omit_prefixes if line and not line.startswith('#')]
filtered = []
for cu in code_units:
skip = False
for pattern in exclude_patterns:
if pattern.search(cu.filename):
skip = True
break
if not skip:
filtered.append(cu)
return filtered
coverage.codeunit.omit_filter = omit_filter
pytest_plugins = ['pytester']
def test_functional(testdir):
testdir.makepyfile("""
def f():
x = 42
def test_whatever():
pass
""")
result = testdir.runpytest("--cover-action=annotate")
assert result.ret == 0
assert result.stdout.fnmatch_lines([
'*Processing Coverage*'
])
coveragefile = testdir.tmpdir.join(".coverage")
assert coveragefile.check()
# XXX try loading it?
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