import unittest

import reactivex
from reactivex import operators as _
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 TestMaterialize(unittest.TestCase):
    def test_materialize_never(self):
        scheduler = TestScheduler()

        def create():
            return reactivex.never().pipe(_.materialize())

        results = scheduler.start(create)
        assert results.messages == []

    def test_materialize_empty(self):
        scheduler = TestScheduler()
        xs = scheduler.create_hot_observable(on_next(150, 1), on_completed(250))

        def create():
            return xs.pipe(_.materialize())

        results = scheduler.start(create).messages
        assert len(results) == 2
        assert (
            results[0].value.kind == "N"
            and results[0].value.value.kind == "C"
            and results[0].time == 250
        )
        assert results[1].value.kind == "C" and results[1].time == 250

    def test_materialize_return(self):
        scheduler = TestScheduler()
        xs = scheduler.create_hot_observable(
            on_next(150, 1), on_next(210, 2), on_completed(250)
        )

        def create():
            return xs.pipe(_.materialize())

        results = scheduler.start(create).messages
        assert len(results) == 3
        assert (
            results[0].value.kind == "N"
            and results[0].value.value.kind == "N"
            and results[0].value.value.value == 2
            and results[0].time == 210
        )
        assert (
            results[1].value.kind == "N"
            and results[1].value.value.kind == "C"
            and results[1].time == 250
        )
        assert results[2].value.kind == "C" and results[1].time == 250

    def test_materialize_on_error(self):
        ex = "ex"
        scheduler = TestScheduler()
        xs = scheduler.create_hot_observable(on_next(150, 1), on_error(250, ex))

        def create():
            return xs.pipe(_.materialize())

        results = scheduler.start(create).messages
        assert len(results) == 2
        assert (
            results[0].value.kind == "N"
            and results[0].value.value.kind == "E"
            and str(results[0].value.value.exception) == ex
        )
        assert results[1].value.kind == "C"

    def test_materialize_dematerialize_never(self):
        scheduler = TestScheduler()

        def create():
            return reactivex.never().pipe(_.materialize(), _.dematerialize())

        results = scheduler.start(create)
        assert results.messages == []

    def test_materialize_dematerialize_empty(self):
        scheduler = TestScheduler()
        xs = scheduler.create_hot_observable(on_next(150, 1), on_completed(250))

        def create():
            return xs.pipe(_.materialize(), _.dematerialize())

        results = scheduler.start(create).messages
        assert len(results) == 1
        assert results[0].value.kind == "C" and results[0].time == 250

    def test_materialize_dematerialize_return(self):
        scheduler = TestScheduler()
        xs = scheduler.create_hot_observable(
            on_next(150, 1), on_next(210, 2), on_completed(250)
        )

        def create():
            return xs.pipe(_.materialize(), _.dematerialize())

        results = scheduler.start(create).messages
        assert len(results) == 2
        assert (
            results[0].value.kind == "N"
            and results[0].value.value == 2
            and results[0].time == 210
        )
        assert results[1].value.kind == "C"

    def test_materialize_dematerialize_on_error(self):
        ex = "ex"
        scheduler = TestScheduler()
        xs = scheduler.create_hot_observable(on_next(150, 1), on_error(250, ex))

        def create():
            return xs.pipe(_.materialize(), _.dematerialize())

        results = scheduler.start(create).messages
        assert len(results) == 1
        assert (
            results[0].value.kind == "E"
            and str(results[0].value.exception) == ex
            and results[0].time == 250
        )


if __name__ == "__main__":
    unittest.main()