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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 TestMin(unittest.TestCase):
def test_min_int32_empty(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(on_next(150, 1), on_completed(250))
def create():
return xs.pipe(ops.min())
res = scheduler.start(create=create).messages
assert 1 == len(res)
assert res[0].value.kind == "E" and res[0].value.exception
assert res[0].time == 250
def test_min_int32_return(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(150, 1), on_next(210, 2), on_completed(250)
)
res = scheduler.start(create=lambda: xs.pipe(ops.min())).messages
assert res == [on_next(250, 2), on_completed(250)]
def test_min_int32_some(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(
on_next(150, 1),
on_next(210, 2),
on_next(220, 3),
on_next(230, 4),
on_completed(250),
)
res = scheduler.start(create=lambda: xs.pipe(ops.min())).messages
assert res == [on_next(250, 2), on_completed(250)]
def test_min_int32_on_error(self):
ex = "ex"
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(on_next(150, 1), on_error(210, ex))
res = scheduler.start(create=lambda: xs.pipe(ops.min())).messages
assert res == [on_error(210, ex)]
def test_min_int32_never(self):
scheduler = TestScheduler()
xs = scheduler.create_hot_observable(on_next(150, 1))
res = scheduler.start(create=lambda: xs.pipe(ops.min())).messages
assert res == []
def test_min_of_t_comparer_empty(self):
scheduler = TestScheduler()
def comparer(a, b):
if a > b:
return -1
if a == b:
return 0
return 1
xs = scheduler.create_hot_observable(on_next(150, "a"), on_completed(250))
def create():
return xs.pipe(ops.min(comparer))
res = scheduler.start(create=create).messages
self.assertEqual(1, len(res))
assert res[0].value.kind == "E" and res[0].value.exception is not None
assert res[0].time == 250
def test_min_of_t_comparer_empty_ii(self):
scheduler = TestScheduler()
def comparer(a, b):
if a > b:
return -1
if a == b:
return 0
return 1
xs = scheduler.create_hot_observable(
on_next(150, "z"),
on_next(210, "b"),
on_next(220, "c"),
on_next(230, "a"),
on_completed(250),
)
def create():
return xs.pipe(ops.min(comparer))
res = scheduler.start(create=create).messages
assert res == [on_next(250, "c"), on_completed(250)]
def test_min_of_t_comparer_on_error(self):
ex = "ex"
scheduler = TestScheduler()
def comparer(a, b):
if a > b:
return -1
if a == b:
return 0
return 1
xs = scheduler.create_hot_observable(on_next(150, "z"), on_error(210, ex))
def create():
return xs.pipe(ops.min(comparer))
res = scheduler.start(create=create).messages
assert res == [on_error(210, ex)]
def test_min_of_t_comparer_never(self):
scheduler = TestScheduler()
def comparer(a, b):
if a > b:
return -1
if a == b:
return 0
return 1
xs = scheduler.create_hot_observable(on_next(150, "z"))
def create():
return xs.pipe(ops.min(comparer))
res = scheduler.start(create=create).messages
assert res == []
def test_min_of_t_comparer_throws(self):
ex = "ex"
scheduler = TestScheduler()
def comparer(a, b):
raise Exception(ex)
xs = scheduler.create_hot_observable(
on_next(150, "z"),
on_next(210, "b"),
on_next(220, "c"),
on_next(230, "a"),
on_completed(250),
)
def create():
return xs.pipe(ops.min(comparer))
res = scheduler.start(create=create).messages
assert res == [on_error(220, ex)]
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