def add_stdlib_paths(paths):
"""Add paths where the stdlib can be found to the set `paths`."""
# Look at where some standard modules are located. That's the
# indication for "installed with the interpreter". In some
# environments (virtualenv, for example), these modules may be
# spread across a few locations. Look at all the candidate modules
# we've imported, and take all the different ones.
modules_we_happen_to_have = [
inspect,
itertools,
os,
platform,
re,
sysconfig,
traceback,
_pypy_irc_topic,
_structseq,
]
for m in modules_we_happen_to_have:
if m is not None and hasattr(m, "__file__"):
paths.add(canonical_path(m, directory=True))
if _structseq and not hasattr(_structseq, '__file__'):
# PyPy 2.4 has no __file__ in the builtin modules, but the code
# objects still have the file names. So dig into one to find
# the path to exclude. The "filename" might be synthetic,
# don't be fooled by those.
structseq_file = code_object(_structseq.structseq_new).co_filename
if not structseq_file.startswith("<"):
paths.add(canonical_path(structseq_file))
def test_datafile_none(self):
cov = coverage.Coverage(data_file=None)
def f1():
a = 1 # pylint: disable=unused-variable
one_line_number = code_object(f1).co_firstlineno + 1
lines = []
def run_one_function(f):
cov.erase()
cov.start()
f()
cov.stop()
fs = cov.get_data().measured_files()
lines.append(cov.get_data().lines(list(fs)[0]))
run_one_function(f1)
run_one_function(f1)
run_one_function(f1)
assert lines == [[one_line_number]] * 3
self.assert_doesnt_exist(".coverage")
assert os.listdir(".") == []
def configure(self, config):
"""Apply the configuration to get ready for decision-time."""
self.source_pkgs.extend(config.source_pkgs)
for src in config.source or []:
if os.path.isdir(src):
self.source.append(canonical_filename(src))
else:
self.source_pkgs.append(src)
self.source_pkgs_unmatched = self.source_pkgs[:]
self.omit = prep_patterns(config.run_omit)
self.include = prep_patterns(config.run_include)
# The directories for files considered "installed with the interpreter".
self.pylib_paths = set()
if not config.cover_pylib:
# Look at where some standard modules are located. That's the
# indication for "installed with the interpreter". In some
# environments (virtualenv, for example), these modules may be
# spread across a few locations. Look at all the candidate modules
# we've imported, and take all the different ones.
for m in (atexit, inspect, os, platform, _pypy_irc_topic, re, _structseq, traceback):
if m is not None and hasattr(m, "__file__"):
self.pylib_paths.add(canonical_path(m, directory=True))
if _structseq and not hasattr(_structseq, '__file__'):
# PyPy 2.4 has no __file__ in the builtin modules, but the code
# objects still have the file names. So dig into one to find
# the path to exclude. The "filename" might be synthetic,
# don't be fooled by those.
structseq_file = code_object(_structseq.structseq_new).co_filename
if not structseq_file.startswith("<"):
self.pylib_paths.add(canonical_path(structseq_file))
# To avoid tracing the coverage.py code itself, we skip anything
# located where we are.
self.cover_paths = [canonical_path(__file__, directory=True)]
if env.TESTING:
# Don't include our own test code.
self.cover_paths.append(os.path.join(self.cover_paths[0], "tests"))
# When testing, we use PyContracts, which should be considered
# part of coverage.py, and it uses six. Exclude those directories
# just as we exclude ourselves.
import contracts
import six
for mod in [contracts, six]:
self.cover_paths.append(canonical_path(mod))
def debug(msg):
if self.debug:
self.debug.write(msg)
# Create the matchers we need for should_trace
if self.source or self.source_pkgs:
against = []
if self.source:
self.source_match = TreeMatcher(self.source)
against.append("trees {!r}".format(self.source_match))
if self.source_pkgs:
self.source_pkgs_match = ModuleMatcher(self.source_pkgs)
against.append("modules {!r}".format(self.source_pkgs_match))
debug("Source matching against " + " and ".join(against))
else:
if self.cover_paths:
self.cover_match = TreeMatcher(self.cover_paths)
debug("Coverage code matching: {!r}".format(self.cover_match))
if self.pylib_paths:
self.pylib_match = TreeMatcher(self.pylib_paths)
debug("Python stdlib matching: {!r}".format(self.pylib_match))
if self.include:
self.include_match = FnmatchMatcher(self.include)
debug("Include matching: {!r}".format(self.include_match))
if self.omit:
self.omit_match = FnmatchMatcher(self.omit)
debug("Omit matching: {!r}".format(self.omit_match))