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import unittest
from reactivex import throw
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 TestThrow(unittest.TestCase):
def test_throw_exception_basic(self):
scheduler = TestScheduler()
ex = "ex"
def factory():
return throw(ex)
results = scheduler.start(factory)
assert results.messages == [on_error(200, ex)]
def test_throw_disposed(self):
scheduler = TestScheduler()
def factory():
return throw("ex")
results = scheduler.start(factory, disposed=200)
assert results.messages == []
def test_throw_observer_throws(self):
scheduler = TestScheduler()
xs = throw("ex")
xs.subscribe(
lambda x: None, lambda ex: _raise("ex"), lambda: None, scheduler=scheduler
)
self.assertRaises(RxException, scheduler.start)
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