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import unittest
from reactivex import operators as ops
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 TestElementAt(unittest.TestCase):
def test_elementat_first(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(280, 42), on_next(360, 43), on_next(470, 44), on_completed(600)
)
def create():
return xs.pipe(ops.element_at(0))
results = scheduler.start(create=create)
assert results.messages == [on_next(280, 42), on_completed(280)]
assert xs.subscriptions == [subscribe(200, 280)]
def test_elementat_other(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(280, 42), on_next(360, 43), on_next(470, 44), on_completed(600)
)
def create():
return xs.pipe(ops.element_at(2))
results = scheduler.start(create=create)
assert results.messages == [on_next(470, 44), on_completed(470)]
assert xs.subscriptions == [subscribe(200, 470)]
def test_elementat_outofrange(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(280, 42), on_next(360, 43), on_next(470, 44), on_completed(600)
)
def create():
return xs.pipe(ops.element_at(3))
results = scheduler.start(create=create)
self.assertEqual(1, len(results.messages))
self.assertEqual(600, results.messages[0].time)
self.assertEqual("E", results.messages[0].value.kind)
assert results.messages[0].value.exception
def test_elementat_error(self):
ex = "ex"
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(280, 42), on_next(360, 43), on_error(420, ex)
)
def create():
return xs.pipe(ops.element_at(3))
results = scheduler.start(create=create)
assert results.messages == [on_error(420, ex)]
assert xs.subscriptions == [subscribe(200, 420)]
def test_element_at_or_default_first(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(280, 42), on_next(360, 43), on_next(470, 44), on_completed(600)
)
def create():
return xs.pipe(ops.element_at_or_default(0))
results = scheduler.start(create=create)
assert results.messages == [on_next(280, 42), on_completed(280)]
assert xs.subscriptions == [subscribe(200, 280)]
def test_element_at_or_default_other(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(280, 42), on_next(360, 43), on_next(470, 44), on_completed(600)
)
def create():
return xs.pipe(ops.element_at_or_default(2))
results = scheduler.start(create=create)
assert results.messages == [on_next(470, 44), on_completed(470)]
assert xs.subscriptions == [subscribe(200, 470)]
def test_element_at_or_default_outofrange(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(280, 42), on_next(360, 43), on_next(470, 44), on_completed(600)
)
def create():
return xs.pipe(ops.element_at_or_default(3, 0))
results = scheduler.start(create=create)
assert results.messages == [on_next(600, 0), on_completed(600)]
assert xs.subscriptions == [subscribe(200, 600)]
def test_element_at_or_default_error(self):
ex = "ex"
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(280, 42), on_next(360, 43), on_error(420, ex)
)
def create():
return xs.pipe(ops.element_at_or_default(3))
results = scheduler.start(create=create)
assert results.messages == [on_error(420, ex)]
assert xs.subscriptions == [subscribe(200, 420)]
if __name__ == "__main__":
unittest.main()
|
