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Python

"""
Test the contents of the ``examples/`` directory.
If an existing test in *this* directory named ``test__example_<fn>.py`` exists,
where ``<fn>`` is the base filename of an example file, it will not be tested
here.
Examples can specify that they need particular test resources to be enabled
by commenting (one per line) ``# gevent-test-requires-resource: <resource>``;
most commonly the resource will be ``network``. You can use this technique to specify
non-existant resources for things that should never be tested.
"""
import re
import os
import glob
import time
import unittest
import gevent.testing as greentest
from gevent.testing import util
this_dir = os.path.dirname(__file__)
def _find_files_to_ignore():
old_dir = os.getcwd()
try:
os.chdir(this_dir)
result = [x[14:] for x in glob.glob('test__example_*.py')]
if greentest.PYPY and greentest.RUNNING_ON_APPVEYOR:
# For some reason on Windows with PyPy, this times out,
# when it should be very fast.
result.append("processes.py")
finally:
os.chdir(old_dir)
return result
default_time_range = (2, 10)
time_ranges = {
'concurrent_download.py': (0, 30),
'processes.py': (0, default_time_range[-1])
}
class _AbstractTestMixin(util.ExampleMixin):
time_range = default_time_range
example = None
def _check_resources(self):
from gevent.testing import resources
with open(os.path.join(self.cwd, self.example), 'r') as f:
contents = f.read()
pattern = re.compile('^# gevent-test-requires-resource: (.*)$', re.MULTILINE)
resources_needed = re.finditer(pattern, contents)
for match in resources_needed:
needed = contents[match.start(1):match.end(1)]
resources.skip_without_resource(needed)
def test_runs(self):
self._check_resources()
start = time.time()
min_time, max_time = self.time_range
self.start_kwargs = {
'timeout': max_time,
'quiet': True,
'buffer_output': True,
'nested': True,
'setenv': {'GEVENT_DEBUG': 'error'}
}
if not self.run_example():
self.fail("Failed example: " + self.example)
else:
took = time.time() - start
self.assertGreaterEqual(took, min_time)
def _build_test_classes():
result = {}
try:
example_dir = util.ExampleMixin().cwd
except unittest.SkipTest:
util.log("WARNING: No examples dir found", color='suboptimal-behaviour')
return result
ignore = _find_files_to_ignore()
for filename in glob.glob(example_dir + '/*.py'):
bn = os.path.basename(filename)
if bn in ignore:
continue
tc = type(
'Test_' + bn,
(_AbstractTestMixin, greentest.TestCase),
{
'example': bn,
'time_range': time_ranges.get(bn, _AbstractTestMixin.time_range)
}
)
result[tc.__name__] = tc
return result
for k, v in _build_test_classes().items():
locals()[k] = v
if __name__ == '__main__':
greentest.main()