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import unittest
import reactivex
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 RxException(Exception):
pass
# Helper function for raising exceptions within lambdas
def _raise(error: str):
raise RxException(error)
class TestConcat(unittest.TestCase):
def test_concat_empty_empty(self):
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_completed(230)]
msgs2 = [on_next(150, 1), on_completed(250)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_completed(250)]
def test_concat_empty_never(self):
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_completed(230)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = reactivex.never()
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == []
def test_concat_never_empty(self):
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_completed(230)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = reactivex.never()
def create():
return e2.pipe(ops.concat(e1))
results = scheduler.start(create)
assert results.messages == []
def test_concat_never_never(self):
scheduler = TestScheduler()
e1 = reactivex.never()
e2 = reactivex.never()
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == []
def test_concat_empty_on_error(self):
ex = "ex"
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_completed(230)]
msgs2 = [on_next(150, 1), on_error(250, ex)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_error(250, ex)]
def test_concat_throw_empty(self):
ex = "ex"
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_error(230, ex)]
msgs2 = [on_next(150, 1), on_completed(250)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_error(230, ex)]
def test_concat_throw_on_error(self):
ex = "ex"
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_error(230, ex)]
msgs2 = [on_next(150, 1), on_error(250, "ex2")]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_error(230, ex)]
def test_concat_return_empty(self):
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_next(210, 2), on_completed(230)]
msgs2 = [on_next(150, 1), on_completed(250)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_next(210, 2), on_completed(250)]
def test_concat_empty_return(self):
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_completed(230)]
msgs2 = [on_next(150, 1), on_next(240, 2), on_completed(250)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_next(240, 2), on_completed(250)]
def test_concat_return_never(self):
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_next(210, 2), on_completed(230)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = reactivex.never()
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_next(210, 2)]
def test_concat_never_return(self):
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_next(210, 2), on_completed(230)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = reactivex.never()
def create():
return e2.pipe(ops.concat(e1))
results = scheduler.start(create)
assert results.messages == []
def test_concat_return_return(self):
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_next(220, 2), on_completed(230)]
msgs2 = [on_next(150, 1), on_next(240, 3), on_completed(250)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_next(220, 2), on_next(240, 3), on_completed(250)]
def test_concat_throw_return(self):
ex = "ex"
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_error(230, ex)]
msgs2 = [on_next(150, 1), on_next(240, 2), on_completed(250)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_error(230, ex)]
def test_concat_return_on_error(self):
ex = "ex"
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_next(220, 2), on_completed(230)]
msgs2 = [on_next(150, 1), on_error(250, ex)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [on_next(220, 2), on_error(250, ex)]
def test_concat_some_data_some_data(self):
scheduler = TestScheduler()
msgs1 = [on_next(150, 1), on_next(210, 2), on_next(220, 3), on_completed(225)]
msgs2 = [on_next(150, 1), on_next(230, 4), on_next(240, 5), on_completed(250)]
e1 = scheduler.create_hot_observable(msgs1)
e2 = scheduler.create_hot_observable(msgs2)
def create():
return e1.pipe(ops.concat(e2))
results = scheduler.start(create)
assert results.messages == [
on_next(210, 2),
on_next(220, 3),
on_next(230, 4),
on_next(240, 5),
on_completed(250),
]
def test_concat_forward_scheduler(self):
scheduler = TestScheduler()
subscribe_schedulers = {"e1": "unknown", "e2": "unknown"}
def subscribe_e1(observer, scheduler="not_set"):
subscribe_schedulers["e1"] = scheduler
observer.on_completed()
def subscribe_e2(observer, scheduler="not_set"):
subscribe_schedulers["e2"] = scheduler
observer.on_completed()
e1 = reactivex.create(subscribe_e1)
e2 = reactivex.create(subscribe_e2)
stream = e1.pipe(ops.concat(e2))
stream.subscribe(scheduler=scheduler)
scheduler.advance_to(1000)
assert subscribe_schedulers["e1"] is scheduler
assert subscribe_schedulers["e2"] is scheduler
def test_concat_forward_none_scheduler(self):
subscribe_schedulers = {"e1": "unknown", "e2": "unknown"}
def subscribe_e1(observer, scheduler="not_set"):
subscribe_schedulers["e1"] = scheduler
observer.on_completed()
def subscribe_e2(observer, scheduler="not_set"):
subscribe_schedulers["e2"] = scheduler
observer.on_completed()
e1 = reactivex.create(subscribe_e1)
e2 = reactivex.create(subscribe_e2)
stream = e1.pipe(ops.concat(e2))
stream.subscribe()
assert subscribe_schedulers["e1"] is None
assert subscribe_schedulers["e2"] is None
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