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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import absolute_import, print_function, unicode_literals
import argparse
import logging
import os
import sys
import tempfile
from multiprocessing import cpu_count
import six
from concurrent.futures import (
ThreadPoolExecutor,
as_completed,
thread,
)
import mozinfo
from mozfile import which
from manifestparser import TestManifest
from manifestparser import filters as mpf
from mozbuild.base import MachCommandBase
from mach.decorators import (
CommandArgument,
CommandProvider,
Command,
)
here = os.path.abspath(os.path.dirname(__file__))
@CommandProvider
class MachCommands(MachCommandBase):
@Command("python", category="devenv", description="Run Python.")
@CommandArgument(
"--no-virtualenv", action="store_true", help="Do not set up a virtualenv"
)
@CommandArgument(
"--exec-file", default=None, help="Execute this Python file using `exec`"
)
@CommandArgument(
"--ipython",
action="store_true",
default=False,
help="Use ipython instead of the default Python REPL.",
)
@CommandArgument("args", nargs=argparse.REMAINDER)
def python(self, no_virtualenv, exec_file, ipython, args):
# Avoid logging the command
self.log_manager.terminal_handler.setLevel(logging.CRITICAL)
# Note: subprocess requires native strings in os.environ on Windows.
append_env = {
"PYTHONDONTWRITEBYTECODE": str("1"),
}
if no_virtualenv:
python_path = sys.executable
append_env["PYTHONPATH"] = os.pathsep.join(sys.path)
else:
self.activate_virtualenv()
python_path = self.virtualenv_manager.python_path
if exec_file:
exec(open(exec_file).read())
return 0
if ipython:
bindir = os.path.dirname(python_path)
python_path = which("ipython", path=bindir)
if not python_path:
if not no_virtualenv:
# Use `_run_pip` directly rather than `install_pip_package` to bypass
# `req.check_if_exists()` which may detect a system installed ipython.
self.virtualenv_manager._run_pip(["install", "ipython"])
python_path = which("ipython", path=bindir)
if not python_path:
print("error: could not detect or install ipython")
return 1
return self.run_process(
[python_path] + args,
pass_thru=True, # Allow user to run Python interactively.
ensure_exit_code=False, # Don't throw on non-zero exit code.
python_unbuffered=False, # Leave input buffered.
append_env=append_env,
)
@Command(
"python-test",
category="testing",
virtualenv_name="python-test",
description="Run Python unit tests with pytest.",
)
@CommandArgument(
"-v", "--verbose", default=False, action="store_true", help="Verbose output."
)
@CommandArgument(
"-j",
"--jobs",
default=None,
type=int,
help="Number of concurrent jobs to run. Default is the number of CPUs "
"in the system.",
)
@CommandArgument(
"-x",
"--exitfirst",
default=False,
action="store_true",
help="Runs all tests sequentially and breaks at the first failure.",
)
@CommandArgument(
"--subsuite",
default=None,
help=(
"Python subsuite to run. If not specified, all subsuites are run. "
"Use the string `default` to only run tests without a subsuite."
),
)
@CommandArgument(
"tests",
nargs="*",
metavar="TEST",
help=(
"Tests to run. Each test can be a single file or a directory. "
"Default test resolution relies on PYTHON_UNITTEST_MANIFESTS."
),
)
@CommandArgument(
"extra",
nargs=argparse.REMAINDER,
metavar="PYTEST ARGS",
help=(
"Arguments that aren't recognized by mach. These will be "
"passed as it is to pytest"
),
)
def python_test(self, *args, **kwargs):
try:
tempdir = str(tempfile.mkdtemp(suffix="-python-test"))
if six.PY2:
os.environ[b"PYTHON_TEST_TMP"] = tempdir
else:
os.environ["PYTHON_TEST_TMP"] = tempdir
return self.run_python_tests(*args, **kwargs)
finally:
import mozfile
mozfile.remove(tempdir)
def run_python_tests(
self,
tests=None,
test_objects=None,
subsuite=None,
verbose=False,
jobs=None,
exitfirst=False,
extra=None,
**kwargs
):
self.activate_virtualenv()
if test_objects is None:
from moztest.resolve import TestResolver
resolver = self._spawn(TestResolver)
# If we were given test paths, try to find tests matching them.
test_objects = resolver.resolve_tests(paths=tests, flavor="python")
else:
# We've received test_objects from |mach test|. We need to ignore
# the subsuite because python-tests don't use this key like other
# harnesses do and |mach test| doesn't realize this.
subsuite = None
mp = TestManifest()
mp.tests.extend(test_objects)
filters = []
if subsuite == "default":
filters.append(mpf.subsuite(None))
elif subsuite:
filters.append(mpf.subsuite(subsuite))
tests = mp.active_tests(
filters=filters,
disabled=False,
python=self.virtualenv_manager.version_info[0],
**mozinfo.info
)
if not tests:
submsg = "for subsuite '{}' ".format(subsuite) if subsuite else ""
message = (
"TEST-UNEXPECTED-FAIL | No tests collected "
+ "{}(Not in PYTHON_UNITTEST_MANIFESTS?)".format(submsg)
)
self.log(logging.WARN, "python-test", {}, message)
return 1
parallel = []
sequential = []
os.environ.setdefault("PYTEST_ADDOPTS", "")
if extra:
os.environ["PYTEST_ADDOPTS"] += " " + " ".join(extra)
installed_requirements = set()
for test in tests:
if (
test.get("requirements")
and test["requirements"] not in installed_requirements
):
self.virtualenv_manager.install_pip_requirements(
test["requirements"], quiet=True
)
installed_requirements.add(test["requirements"])
if exitfirst:
sequential = tests
os.environ["PYTEST_ADDOPTS"] += " -x"
else:
for test in tests:
if test.get("sequential"):
sequential.append(test)
else:
parallel.append(test)
self.jobs = jobs or cpu_count()
self.terminate = False
self.verbose = verbose
return_code = 0
def on_test_finished(result):
output, ret, test_path = result
for line in output:
self.log(logging.INFO, "python-test", {"line": line.rstrip()}, "{line}")
if ret and not return_code:
self.log(
logging.ERROR,
"python-test",
{"test_path": test_path, "ret": ret},
"Setting retcode to {ret} from {test_path}",
)
return return_code or ret
with ThreadPoolExecutor(max_workers=self.jobs) as executor:
futures = [
executor.submit(self._run_python_test, test) for test in parallel
]
try:
for future in as_completed(futures):
return_code = on_test_finished(future.result())
except KeyboardInterrupt:
# Hack to force stop currently running threads.
executor._threads.clear()
thread._threads_queues.clear()
raise
for test in sequential:
return_code = on_test_finished(self._run_python_test(test))
if return_code and exitfirst:
break
self.log(
logging.INFO,
"python-test",
{"return_code": return_code},
"Return code from mach python-test: {return_code}",
)
return return_code
def _run_python_test(self, test):
from mozprocess import ProcessHandler
output = []
def _log(line):
# Buffer messages if more than one worker to avoid interleaving
if self.jobs > 1:
output.append(line)
else:
self.log(logging.INFO, "python-test", {"line": line.rstrip()}, "{line}")
file_displayed_test = [] # used as boolean
def _line_handler(line):
line = six.ensure_str(line)
if not file_displayed_test:
output = (
"Ran" in line or "collected" in line or line.startswith("TEST-")
)
if output:
file_displayed_test.append(True)
# Hack to make sure treeherder highlights pytest failures
if "FAILED" in line.rsplit(" ", 1)[-1]:
line = line.replace("FAILED", "TEST-UNEXPECTED-FAIL")
_log(line)
_log(test["path"])
python = self.virtualenv_manager.python_path
cmd = [python, test["path"]]
env = os.environ.copy()
if six.PY2:
env[b"PYTHONDONTWRITEBYTECODE"] = b"1"
else:
env["PYTHONDONTWRITEBYTECODE"] = "1"
# Homebrew on OS X will change Python's sys.executable to a custom value
# which messes with mach's virtualenv handling code. Override Homebrew's
# changes with the correct sys.executable value.
if six.PY2:
env[b"PYTHONEXECUTABLE"] = python.encode("utf-8")
else:
env["PYTHONEXECUTABLE"] = python
proc = ProcessHandler(
cmd, env=env, processOutputLine=_line_handler, storeOutput=False
)
proc.run()
return_code = proc.wait()
if not file_displayed_test:
_log(
"TEST-UNEXPECTED-FAIL | No test output (missing mozunit.main() "
"call?): {}".format(test["path"])
)
if self.verbose:
if return_code != 0:
_log("Test failed: {}".format(test["path"]))
else:
_log("Test passed: {}".format(test["path"]))
return output, return_code, test["path"]