blockingMostRecent vs blockingFirst

BlockingFirstTest.kt

@DisplayName("Given we are testing blockingFirst")
class BlockingFirstTest : KoinTest() {

    private val behaviorSubject: BehaviorSubject<Int> = BehaviorSubject.createDefault(0)
    private val observableSubject: Observable<Int> = behaviorSubject

    @Test
    fun `then it should have emitted six times`() {
        var didEmit = 0
        observableSubject.doOnNext { didEmit += 1 }.blockingMostRecent(null).iterator().next()
        observableSubject.doOnNext { didEmit += 1 }.blockingMostRecent(null).iterator().next()
        observableSubject.doOnNext { didEmit += 1 }.blockingMostRecent(null).iterator().next()

        didEmit.shouldBeEqualTo(3)

        behaviorSubject.onNext(1)

        didEmit.shouldBeEqualTo(6) // <-- did you mean to emit six times???

        // Not 0, the observable is not keeping a history and it emits the latest value
        observableSubject.blockingFirst().shouldBeEqualTo(1)
    }

    @Test
    fun `then it should only emitted three times`() {
        var didEmit = 0
        observableSubject.doOnNext { didEmit += 1 }.blockingFirst()
        observableSubject.doOnNext { didEmit += 1 }.blockingFirst()
        observableSubject.doOnNext { didEmit += 1 }.blockingFirst()

        didEmit.shouldBeEqualTo(3)

        behaviorSubject.onNext(1)

        didEmit.shouldBeEqualTo(3)

        // Not 0, the observable is not keeping a history and it emits the latest value
        observableSubject.blockingFirst().shouldBeEqualTo(1)
    }
}