Files
zulip/tools/test-backend
Tim Abbott d5946de718 decorator: Add nocoverage comments for rate_limit decorator.
We've already got a bunch of other comments on work we need to do for
this decorator and an open issue that will ensure we at some point
rework this and add tests for it.  In the meantime, I'd like to lock
down the rest of decorator.py at 100% coverage.

Fixes #1000.
2018-04-25 22:37:12 -07:00

435 lines
17 KiB
Python
Executable File

#!/usr/bin/env python3
from typing import List, Any
from mypy_extensions import NoReturn
import glob
import argparse
import os
import sys
import subprocess
import ujson
import httplib2
import requests
# check for the venv
from lib import sanity_check
sanity_check.check_venv(__file__)
import django
from django.conf import settings
from django.test.utils import get_runner
target_fully_covered = {path for target in [
'analytics/lib/*.py',
'analytics/models.py',
'analytics/tests/*.py',
'analytics/views.py',
# zerver/ and zerver/lib/ are important core files
'zerver/*.py',
'zerver/lib/*.py',
# Test files should have 100% coverage; test code that isn't run
# is likely a bug in the test.
'zerver/tests/*.py',
# As a project, we require 100% test coverage in the views files.
'zerver/views/*.py',
'zproject/backends.py',
'confirmation/*.py',
'zerver/webhooks/*/*.py',
# Once we have a nice negative tests system, we can add these:
# 'zerver/webhooks/*/*.py',
# 'zerver/webhooks/*/*/*.py',
'zerver/worker/queue_processor.py',
] for path in glob.glob(target)}
not_yet_fully_covered = {
# Analytics fixtures library is used to generate test fixtures;
# isn't properly accounted for in test coverage analysis since it
# runs before tests.
'analytics/lib/fixtures.py',
# We have 100% coverage on the new stuff; need to refactor old stuff.
'analytics/views.py',
# Major lib files should have 100% coverage
'zerver/lib/actions.py',
'zerver/lib/addressee.py',
'zerver/lib/bugdown/__init__.py',
'zerver/lib/cache.py',
'zerver/lib/cache_helpers.py',
'zerver/lib/create_user.py',
'zerver/lib/exceptions.py',
'zerver/lib/i18n.py',
'zerver/lib/management.py',
'zerver/lib/notifications.py',
'zerver/lib/send_email.py',
'zerver/lib/upload.py',
# Other lib files that ideally would coverage, but aren't sorted
'zerver/__init__.py',
'zerver/apps.py',
'zerver/filters.py',
'zerver/middleware.py',
'zerver/storage.py',
'zerver/lib/bot_lib.py',
'zerver/lib/camo.py',
'zerver/lib/debug.py',
'zerver/lib/digest.py',
'zerver/lib/email_mirror.py',
'zerver/lib/error_notify.py',
'zerver/lib/export.py',
'zerver/lib/feedback.py',
'zerver/lib/fix_unreads.py',
'zerver/lib/html_diff.py',
'zerver/lib/import_realm.py',
'zerver/lib/logging_util.py',
'zerver/lib/migrate.py',
'zerver/lib/outgoing_webhook.py',
'zerver/lib/parallel.py',
'zerver/lib/profile.py',
'zerver/lib/queue.py',
'zerver/lib/rate_limiter.py',
'zerver/lib/slack_data_to_zulip_data.py',
'zerver/lib/sqlalchemy_utils.py',
'zerver/lib/str_utils.py',
'zerver/lib/stream_recipient.py',
'zerver/lib/timeout.py',
'zerver/lib/unminify.py',
'zerver/lib/utils.py',
# Low priority for coverage
'zerver/lib/bulk_create.py',
'zerver/lib/ccache.py',
'zerver/lib/generate_test_data.py',
'zerver/lib/statistics.py',
'zerver/lib/test_fixtures.py',
'zerver/lib/test_runner.py',
'zerver/lib/api_test_helpers.py',
# Webhook integrations with incomplete coverage
'zerver/webhooks/basecamp/view.py',
'zerver/webhooks/beanstalk/view.py',
'zerver/webhooks/bitbucket2/view.py',
'zerver/webhooks/freshdesk/view.py',
'zerver/webhooks/github_legacy/view.py',
'zerver/webhooks/github/view.py',
'zerver/webhooks/gitlab/view.py',
'zerver/webhooks/gogs/view.py',
'zerver/webhooks/greenhouse/view.py',
'zerver/webhooks/hellosign/view.py',
'zerver/webhooks/ifttt/view.py',
'zerver/webhooks/jira/view.py',
'zerver/webhooks/librato/view.py',
'zerver/webhooks/newrelic/view.py',
'zerver/webhooks/pingdom/view.py',
'zerver/webhooks/pivotal/view.py',
'zerver/webhooks/semaphore/view.py',
'zerver/webhooks/solano/view.py',
'zerver/webhooks/stripe/view.py',
'zerver/webhooks/taiga/view.py',
'zerver/webhooks/teamcity/view.py',
'zerver/webhooks/transifex/view.py',
'zerver/webhooks/travis/view.py',
'zerver/webhooks/updown/view.py',
'zerver/webhooks/zapier/view.py',
}
enforce_fully_covered = sorted(target_fully_covered - not_yet_fully_covered)
FAILED_TEST_PATH = 'var/last_test_failure.json'
def get_failed_tests():
# type: () -> List[str]
try:
with open(FAILED_TEST_PATH, 'r') as f:
return ujson.load(f)
except IOError:
print("var/last_test_failure.json doesn't exist; running all tests.")
return []
def write_failed_tests(failed_tests):
# type: (List[str]) -> None
if failed_tests:
with open(FAILED_TEST_PATH, 'w') as f:
ujson.dump(failed_tests, f)
def block_internet():
# type: () -> None
# We are blocking internet currently by assuming mostly any test would use
# httplib2 to access internet.
def internet_guard(*args, **kwargs):
# type: (*Any, **Any) -> NoReturn
raise Exception("Outgoing network requests are not allowed in the Zulip tests. "
"More details and advice are available here:"
"https://zulip.readthedocs.io/en/latest/testing/testing.html#internet-access-inside-test-suites")
httplib2.Http.request = internet_guard
requests.request = internet_guard
if __name__ == "__main__":
block_internet()
TOOLS_DIR = os.path.dirname(os.path.abspath(__file__))
os.chdir(os.path.dirname(TOOLS_DIR))
sys.path.insert(0, os.path.dirname(TOOLS_DIR))
# Remove proxy settings for running backend tests
os.environ["http_proxy"] = ""
os.environ["https_proxy"] = ""
from zerver.lib.test_fixtures import is_template_database_current
from tools.lib.test_script import (
get_provisioning_status,
)
os.environ['DJANGO_SETTINGS_MODULE'] = 'zproject.test_settings'
# "-u" uses unbuffered IO, which is important when wrapping it in subprocess
os.environ['PYTHONUNBUFFERED'] = 'y'
usage = """test-backend [options]
test-backend # Runs all backend tests
test-backend zerver.tests.test_bugdown # run all tests in a test module
test-backend zerver/tests/test_bugdown.py # run all tests in a test module
test-backend test_bugdown # run all tests in a test module
test-backend zerver.tests.test_bugdown.BugdownTest # run all tests in a test class
test-backend BugdownTest # run all tests in a test class
test-backend zerver.tests.test_bugdown.BugdownTest.test_inline_youtube # run a single test
test-backend BugdownTest.test_inline_youtube # run a single test"""
parser = argparse.ArgumentParser(description=usage,
formatter_class=argparse.RawTextHelpFormatter)
parser.add_argument('--nonfatal-errors', action="store_false", default=True,
dest="fatal_errors", help="Continue past test failures to run all tests")
parser.add_argument('--coverage', dest='coverage',
action="store_true",
default=False,
help='Compute test coverage.')
parser.add_argument('--verbose-coverage', dest='verbose_coverage',
action="store_true",
default=False, help='Enable verbose print of coverage report.')
parser.add_argument('--processes', dest='processes',
type=int,
action='store',
default=4,
help='Specify the number of processes to run the '
'tests in. Default is 4.')
parser.add_argument('--profile', dest='profile',
action="store_true",
default=False, help='Profile test runtime.')
parser.add_argument('--force', dest='force',
action="store_true",
default=False, help='Run tests despite possible problems.')
parser.add_argument('--no-shallow', dest='no_shallow',
action="store_true",
default=False,
help="Don't allow shallow testing of templates (deprecated)")
parser.add_argument('--verbose', dest='verbose',
action="store_true",
default=False,
help="Show detailed output")
parser.add_argument('--generate-fixtures', action="store_true", default=False,
dest="generate_fixtures",
help=("Force a call to generate-fixtures."))
parser.add_argument('--report-slow-tests', dest='report_slow_tests',
action="store_true",
default=False,
help="Show which tests are slowest.")
parser.add_argument('--reverse', dest='reverse',
action="store_true",
default=False,
help="Run tests in reverse order.")
parser.add_argument('--rerun', dest="rerun",
action="store_true",
default=False,
help=("Run the tests which failed the last time "
"test-backend was run. Implies --nonfatal-errors."))
parser.add_argument('args', nargs=argparse.REMAINDER)
options = parser.parse_args()
args = options.args
if options.processes < 1:
raise argparse.ArgumentError(
"option processes: Only positive integers are allowed.")
zerver_test_dir = 'zerver/tests/'
# While running --rerun, we read var/last_test_failure.json to get
# the list of tests that failed on the last run, and then pretend
# those tests were passed explicitly. --rerun implies
# --nonfatal-errors, so that we don't end up removing tests from
# the list that weren't run.
if options.rerun:
options.processes = 1
options.fatal_errors = False
failed_tests = get_failed_tests()
if failed_tests:
args = failed_tests
if len(args) > 0:
# If we passed a specific set of tests, run in serial mode.
options.processes = 1
# to transform forward slashes '/' present in the argument into dots '.'
for suite in args:
args[args.index(suite)] = suite.rstrip('/').replace("/", ".")
def rewrite_arguments(search_key):
# type: (str) -> None
for root, dirs, files_names in os.walk(zerver_test_dir, topdown=False):
for file_name in files_names:
# Check for files starting with alphanumeric characters and ending with '.py'
# Ignore backup files if any
if not file_name[0].isalnum() or not file_name.endswith(".py"):
continue
filepath = os.path.join(root, file_name)
for line in open(filepath):
if search_key not in line:
continue
new_suite = filepath.replace(".py", ".") + suite
args[args.index(suite)] = new_suite
return
for suite in args:
if suite[0].isupper() and "test_" in suite:
classname = suite.rsplit('.', 1)[0]
rewrite_arguments(classname)
elif suite[0].isupper():
rewrite_arguments('class %s(' % (suite,))
for suite in args:
if suite.startswith('test'):
for root, dirs, files_names in os.walk(zerver_test_dir):
for file_name in files_names:
if file_name == suite or file_name == suite + ".py":
new_suite = os.path.join(root, file_name)
args[args.index(suite)] = new_suite
break
for suite in args:
args[args.index(suite)] = suite.replace(".py", "")
# to transform forward slashes '/' introduced by the zerver_test_dir into dots '.'
# taking care of any forward slashes that might be present
for suite in args:
args[args.index(suite)] = suite.replace("/", ".")
full_suite = len(args) == 0
if len(args) == 0:
suites = ["zerver.tests",
"zerver.webhooks",
"analytics.tests"]
else:
suites = args
if not options.force:
ok, msg = get_provisioning_status()
if not ok:
print(msg)
print('If you really know what you are doing, use --force to run anyway.')
sys.exit(1)
if options.coverage:
import coverage
cov = coverage.Coverage(config_file="tools/coveragerc", concurrency='multiprocessing')
cov.start()
if options.profile:
import cProfile
prof = cProfile.Profile()
prof.enable()
# This is kind of hacky, but it's the most reliable way
# to make sure instrumentation decorators know the
# setting when they run.
os.environ['TEST_INSTRUMENT_URL_COVERAGE'] = 'TRUE'
# setup() needs to be called after coverage is started to get proper coverage reports of model
# files, since part of setup is importing the models for all applications in INSTALLED_APPS.
django.setup()
if options.generate_fixtures or not is_template_database_current():
generate_fixtures_command = [os.path.join(TOOLS_DIR, 'setup', 'generate-fixtures')]
generate_fixtures_command.append('--force')
subprocess.call(generate_fixtures_command)
subprocess.check_call(['tools/webpack', '--test'])
TestRunner = get_runner(settings)
parallel = options.processes
if parallel > 1:
print("-- Running tests in parallel mode with {} "
"processes.".format(parallel))
else:
print("-- Running tests in serial mode.")
test_runner = TestRunner(failfast=options.fatal_errors, verbosity=2,
parallel=parallel, reverse=options.reverse,
keepdb=True)
failures, failed_tests = test_runner.run_tests(suites, full_suite=full_suite)
write_failed_tests(failed_tests)
templates_not_rendered = test_runner.get_shallow_tested_templates()
# We only check the templates if all the tests ran and passed
if not failures and full_suite and templates_not_rendered:
missed_count = len(templates_not_rendered)
print("\nError: %s templates have no tests!" % (missed_count,))
for template in templates_not_rendered:
print(' {}'.format(template))
print("See zerver/tests/test_templates.py for the exclude list.")
failures = True
if options.coverage:
cov.stop()
cov.save()
cov.combine()
cov.data_suffix = False # Disable suffix so that filename is .coverage
cov.save()
if options.verbose_coverage:
print("Printing coverage data")
cov.report(show_missing=False)
cov.html_report(directory='var/coverage')
print("HTML report saved; visit at http://127.0.0.1:9991/coverage/index.html")
if full_suite and not failures and options.coverage:
# Assert that various files have full coverage
for path in enforce_fully_covered:
missing_lines = cov.analysis2(path)[3]
if len(missing_lines) > 0:
print("ERROR: %s no longer has complete backend test coverage" % (path,))
print(" Lines missing coverage: %s" % (missing_lines,))
print()
failures = True
if failures:
print("It looks like your changes lost 100% test coverage in one or more files")
print("Usually, the right fix for this is to add some tests.")
print("But also check out the include/exclude lists in tools/test-backend.")
print("If this line intentionally is not tested, you can use a # nocoverage comment.")
print("To run this check locally, use `test-backend --coverage`.")
ok = True
for path in not_yet_fully_covered:
try:
missing_lines = cov.analysis2(path)[3]
if len(missing_lines) == 0:
print("ERROR: %s has complete backend test coverage but is still in not_yet_fully_covered." % (path,))
ok = False
except coverage.misc.NoSource:
continue
if not ok:
print()
print("There are one or more fully covered files that are still in not_yet_fully_covered.")
print("Remove the file(s) from not_yet_fully_covered in `tools/test-backend`.")
failures = True
if options.profile:
prof.disable()
prof.dump_stats("/tmp/profile.data")
print("Profile data saved to /tmp/profile.data")
print("You can visualize it using e.g. `snakeviz /tmp/profile.data`")
print("Note: If you are using vagrant for development environment you will need to do:")
print("1.) `vagrant ssh -- -L 8080:127.0.0.1:8080`")
print("2.) `snakeviz -s /tmp/profile.data`")
if options.report_slow_tests:
from zerver.lib.test_runner import report_slow_tests
# We do this even with failures, since slowness can be
# an important clue as to why tests fail.
report_slow_tests()
# We'll have printed whether tests passed or failed above
sys.exit(bool(failures))