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import unittest
import threading
from pebble import concurrent
from pebble import ThreadPool
def not_decorated(argument, keyword_argument=0):
return argument + keyword_argument
@concurrent.thread
def decorated(argument, keyword_argument=0):
"""A docstring."""
return argument + keyword_argument
@concurrent.thread
def error_decorated():
raise RuntimeError("BOOM!")
@concurrent.thread
def error_returned():
return RuntimeError("BOOM!")
@concurrent.thread()
def name_keyword_argument(name='function_kwarg'):
return name
@concurrent.thread(name='concurrent_thread_name')
def name_keyword_decorated():
return threading.current_thread().name
@concurrent.thread(name='decorator_kwarg')
def name_keyword_decorated_and_argument(name='bar'):
return (threading.current_thread().name, name)
@concurrent.thread(daemon=False)
def daemon_keyword_decorated():
return threading.current_thread().daemon
@concurrent.thread(pool=ThreadPool(1))
def pool_decorated(_argument, _keyword_argument=0):
return threading.current_thread().ident
class ThreadConcurrentObj:
a = 0
def __init__(self):
self.b = 1
@classmethod
@concurrent.thread
def clsmethod(cls):
return cls.a
@concurrent.thread
def instmethod(self):
return self.b
@staticmethod
@concurrent.thread
def stcmethod():
return 2
class TestThreadConcurrent(unittest.TestCase):
def setUp(self):
self.results = 0
self.exception = None
self.event = threading.Event()
self.event.clear()
self.concurrentobj = ThreadConcurrentObj()
def callback(self, future):
try:
self.results = future.result()
except (RuntimeError) as error:
self.exception = error
finally:
self.event.set()
def test_docstring(self):
"""Thread docstring is preserved."""
self.assertEqual(decorated.__doc__, "A docstring.")
def test_class_method(self):
"""Thread decorated classmethods."""
future = ThreadConcurrentObj.clsmethod()
self.assertEqual(future.result(), 0)
def test_instance_method(self):
"""Thread decorated instance methods."""
future = self.concurrentobj.instmethod()
self.assertEqual(future.result(), 1)
def test_static_method(self):
"""Thread decorated static methods ( startmethod only)."""
future = self.concurrentobj.stcmethod()
self.assertEqual(future.result(), 2)
def test_not_decorated_results(self):
"""Process Fork results are produced."""
non_decorated = concurrent.thread(not_decorated)
future = non_decorated(1, 1)
self.assertEqual(future.result(), 2)
def test_decorated_results(self):
"""Thread results are produced."""
future = decorated(1, 1)
self.assertEqual(future.result(), 2)
def test_decorated_results_callback(self):
"""Thread results are forwarded to the callback."""
future = decorated(1, 1)
future.add_done_callback(self.callback)
self.event.wait(timeout=1)
self.assertEqual(self.results, 2)
def test_error_decorated(self):
"""Thread errors are raised by future.result."""
future = error_decorated()
with self.assertRaises(RuntimeError):
future.result()
def test_error_returned(self):
"""Thread returned errors are returned by future.result."""
future = error_returned()
self.assertIsInstance(future.result(), RuntimeError)
def test_error_decorated_callback(self):
"""Thread errors are forwarded to callback."""
future = error_decorated()
future.add_done_callback(self.callback)
self.event.wait(timeout=1)
self.assertTrue(isinstance(self.exception, RuntimeError),
msg=str(self.exception))
def test_name_keyword_argument(self):
"""name keyword can be passed to a decorated function process without name """
f = name_keyword_argument()
fn_out = f.result()
self.assertEqual(fn_out, "function_kwarg")
def test_name_keyword_decorated(self):
"""
Check that a simple use case of the name keyword passed to the decorator works
"""
f = name_keyword_decorated()
dec_out = f.result()
self.assertEqual(dec_out, "concurrent_thread_name")
def test_name_keyword_decorated_result(self):
"""name kwarg is handled without modifying the function kwargs"""
f = name_keyword_decorated_and_argument(name="function_kwarg")
dec_out, fn_out = f.result()
self.assertEqual(dec_out, "decorator_kwarg")
self.assertEqual(fn_out, "function_kwarg")
def test_daemon_keyword_decorated(self):
"""Daemon keyword can be passed to a decorated function and spawns correctly."""
f = daemon_keyword_decorated()
dec_out = f.result()
self.assertEqual(dec_out, False)
def test_pool_decorated(self):
"""Thread pool decorated function."""
future1 = pool_decorated(1, 1)
future2 = pool_decorated(1, 1)
self.assertEqual(future1.result(), future2.result())
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