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    val testScheduler = TestScheduler()

    val states = listOf(Loading, Loaded, ClickX, ClickY)

    @Test
    fun `loading followed 500ms later by loaded is emitted`() {
        val observable = Observable.fromIterable(listOf(0, 500, 1000, 2000))
            .zipWith(states) { index, state -> Pair(index, state) }
            .delay {
                Observable.timer(it.first.toLong(), TimeUnit.MILLISECONDS, testScheduler)

drawers

import org.easymock.EasyMock.*
import org.easymock.EasyMockSupport
import org.easymock.Mock
import org.junit.Before
import org.junit.Test

class EasyMock {

    @Mock
    lateinit var mock: MutableList<String>

drawers

class Mockito {

    @Mock
    lateinit var mock: MutableList<String>

    @Before
    fun setUp() {
        MockitoAnnotations.initMocks(this)
    }

drawers

import com.nhaarman.mockitokotlin2.whenever
import org.junit.Before
import org.junit.Test
import org.mockito.Mock
import org.mockito.Mockito.verify
import org.mockito.MockitoAnnotations

class MockitoKotlin {

    @Mock

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fun main() {
  var string: String = "abc"
  string = null // compiler error
}

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fun List<Int>.myMax(): Int? {
    val iterator = iterator()
    if (!iterator.hasNext()) return null
    var max = iterator.next()
    while (iterator.hasNext()) {
        val e = iterator.next()
        if (max < e) max = e
    }
    return max
}

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class ValueBased {

    @Test
    fun testLargestValue() {
        val ints = listOf(4, 8, 7)

        assertEquals(8, ints.myMax())
    }

    @Test

drawers

fun List<Int>.myMax(): Int? {
    return if (this.size < 2) null else this[1]
}

drawers

import io.kotlintest.matchers.beGreaterThan
import io.kotlintest.matchers.collections.shouldContain
import io.kotlintest.properties.assertAll
import io.kotlintest.shouldBe
import io.kotlintest.shouldNot
import io.kotlintest.specs.StringSpec

class KotlinTest : StringSpec() {

    init {

drawers

import io.kotlintest.matchers.beGreaterThan
import io.kotlintest.matchers.collections.shouldContain
import io.kotlintest.properties.assertAll
import io.kotlintest.shouldBe
import io.kotlintest.shouldNot
import io.kotlintest.specs.StringSpec

class KotlinTest : StringSpec() {

    init {