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import unittest
import reactivex
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 TestFromIterable(unittest.TestCase):
def test_subscribe_to_iterable_finite(self):
iterable_finite = [1, 2, 3, 4, 5]
scheduler = TestScheduler()
def create():
return reactivex.from_(iterable_finite)
results = scheduler.start(create)
assert results.messages == [
on_next(200, 1),
on_next(200, 2),
on_next(200, 3),
on_next(200, 4),
on_next(200, 5),
on_completed(200),
]
def test_subscribe_to_iterable_empty(self):
iterable_finite = []
scheduler = TestScheduler()
def create():
return reactivex.from_(iterable_finite)
results = scheduler.start(create)
assert results.messages == [on_completed(200)]
def test_double_subscribe_to_iterable(self):
iterable_finite = [1, 2, 3]
scheduler = TestScheduler()
obs = reactivex.from_(iterable_finite)
results = scheduler.start(lambda: reactivex.concat(obs, obs))
assert results.messages == [
on_next(200, 1),
on_next(200, 2),
on_next(200, 3),
on_next(200, 1),
on_next(200, 2),
on_next(200, 3),
on_completed(200),
]
def test_observer_throws(self):
with self.assertRaises(RxException):
reactivex.from_iterable([1, 2, 3]).subscribe(lambda x: _raise("ex"))
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