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import unittest
from reactivex import empty
from reactivex.testing import ReactiveTest, TestScheduler
on_next = ReactiveTest.on_next
on_completed = ReactiveTest.on_completed
on_error = ReactiveTest.on_error
subscribe = ReactiveTest.subscribe
subscribed = ReactiveTest.subscribed
disposed = ReactiveTest.disposed
created = ReactiveTest.created
class RxException(Exception):
pass
# Helper function for raising exceptions within lambdas
def _raise(ex):
raise RxException(ex)
class TestEmpty(unittest.TestCase):
def test_empty_basic(self):
scheduler = TestScheduler()
def factory():
return empty()
results = scheduler.start(factory)
assert results.messages == [on_completed(200)]
def test_empty_disposed(self):
scheduler = TestScheduler()
def factory():
return empty()
results = scheduler.start(factory, disposed=200)
assert results.messages == []
def test_empty_observer_throw_exception(self):
scheduler = TestScheduler()
xs = empty()
xs.subscribe(
lambda x: None, lambda ex: None, lambda: _raise("ex"), scheduler=scheduler
)
with self.assertRaises(RxException):
scheduler.start()
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