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CapturingTest.kt
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CapturingTest.kt
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package io.mockk.it
import io.mockk.*
import kotlin.test.BeforeTest
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertFailsWith
class CapturingTest {
private val mock = mockk<MockedSubject>()
@BeforeTest
fun setup() {
every { mock.doSomething("1", "data1") } returns "result1"
every { mock.doSomething("2", "data2") } returns "result2"
}
@Test
fun captureRegularSlot() {
val mock = mockk<MockCls>()
val slot = CapturingSlot<Cls>()
every { mock.op(1, 2, capture(slot)) } returns 22
assertEquals(22, mock.op(1, 2, Cls().apply { value = 55 }))
assertEquals(55, slot.captured.value)
verify { mock.op(1, 2, any()) }
}
@Test
fun captureListSlot() {
val mock = mockk<MockCls>()
val items = mutableListOf<Cls>()
every { mock.op(1, 2, capture(items)) } returns 22
assertEquals(22, mock.op(1, 2, Cls().apply { value = 55 }))
assertEquals(55, items[0].value)
verify { mock.op(1, 2, any()) }
}
@Test
fun coCaptureRegularSlot() {
val mock = mockk<CoMockCls>()
val slot = CapturingSlot<Cls>()
coEvery { mock.op(1, 2, capture(slot)) } returns 22
InternalPlatformDsl.runCoroutine {
assertEquals(22, mock.op(1, 2, Cls().apply { value = 55 }))
}
assertEquals(55, slot.captured.value)
coVerify { mock.op(1, 2, any()) }
}
@Test
fun coCaptureListSlot() {
val mock = mockk<CoMockCls>()
val items = mutableListOf<Cls>()
coEvery { mock.op(1, 2, capture(items)) } returns 22
InternalPlatformDsl.runCoroutine {
assertEquals(22, mock.op(1, 2, Cls().apply { value = 55 }))
}
assertEquals(55, items[0].value)
coVerify { mock.op(1, 2, any()) }
}
/**
* See issue #352.
*/
@Test
fun itThrowsAMockkExceptionWhenVerifyingTheSameFunctionTwiceWithSlots() {
mock.doSomething("1", "data1")
mock.doSomething("2", "data2")
val dataSlotId1 = slot<String>()
val dataSlotId2 = slot<String>()
assertFailsWith<MockKException> {
verify {
mock.doSomething(any(), capture(dataSlotId1))
mock.doSomething(any(), capture(dataSlotId2))
}
}
}
/**
* See issue #352.
*/
@Test
fun itDoesNotThrowAMockkExceptionWhenThereAreMultipleTestsVerifyingWithSlots() {
mock.doSomething("1", "data1")
val slot = slot<String>()
verify {
mock.doSomething("1", capture(slot))
}
assertEquals("data1", slot.captured)
}
/**
* See issue #352.
*/
@Test
fun anotherTestToTestTheCoexistenceOfTestsWithSlots() {
mock.doSomething("1", "data1")
val slot = slot<String>()
verify {
mock.doSomething("1", capture(slot))
}
assertEquals("data1", slot.captured)
}
/**
* See issue #352.
*/
@Test
fun itAllowsMultipleCapturingsOfTheSameFunctionUsingAMutableList() {
mock.doSomething("1", "data1")
mock.doSomething("2", "data2")
val slotList = mutableListOf<String>()
verify {
mock.doSomething("1", capture(slotList))
mock.doSomething("2", capture(slotList))
}
// Each capture should have happened once because of different matchers for `id` argument
assertEquals(slotList.size, 2)
assertEquals("data1", slotList[0])
assertEquals("data2", slotList[1])
}
/**
* See issue #353.
*/
@Test
fun testNullableCapture() {
val list = mutableListOf<String?>()
val test: MockNullableCls = mockk {
every { call(captureNullable(list)) } just Runs
}
val args = listOf("One", "Two", "Three", null)
for (arg in args) {
test.call(arg)
}
assertEquals(args, list)
}
@Test
fun itDoesNotThrowAMockkExceptionWhenVerifyingTheSameFunctionTwiceWithSlotsWithDifferentMatchers() {
mock.doSomething("1", "data1")
mock.doSomething("2", "data2")
val dataSlotId1 = slot<String>()
val dataSlotId2 = slot<String>()
verify {
mock.doSomething("1", capture(dataSlotId1))
mock.doSomething("2", capture(dataSlotId2))
}
assertEquals("data1", dataSlotId1.captured)
assertEquals("data2", dataSlotId2.captured)
}
class MockNullableCls {
fun call(unused: String?) {
println(unused)
}
}
class Cls {
var value = 0
}
class MockCls {
fun op(a: Int, b: Int, c: Cls) = a + b + c.value
}
class CoMockCls {
suspend fun op(a: Int, b: Int, c: Cls) = a + b + c.value
}
open class MockedSubject {
open fun doSomething(id: String?, data: Any?): String {
throw IllegalStateException("Not mocked :(")
}
}
}