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AdditionalAnswerTest.kt
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AdditionalAnswerTest.kt
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package io.mockk.it
import io.mockk.ConstantAnswer
import io.mockk.every
import io.mockk.mockk
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertFailsWith
class AdditionalAnswerTest {
val mock = mockk<MockCls>()
@Test
fun andReturnsAnswer() {
every { mock.op(any()) } returns 3 andThen 5
assertEquals(3, mock.op(1))
assertEquals(5, mock.op(2))
assertEquals(5, mock.op(3))
}
@Test
fun andReturnsManyAnswer() {
every { mock.op(any()) } returns 3 andThenMany listOf(4, 5)
assertEquals(3, mock.op(1))
assertEquals(4, mock.op(2))
assertEquals(5, mock.op(3))
assertEquals(5, mock.op(4))
}
@Test
fun andReturnsManyTwiceAnswer() {
every { mock.op(any()) } returns 3 andThenMany listOf(4, 5) andThenMany listOf(6, 7)
assertEquals(3, mock.op(1))
assertEquals(4, mock.op(2))
assertEquals(5, mock.op(3))
assertEquals(6, mock.op(4))
assertEquals(7, mock.op(5))
assertEquals(7, mock.op(6))
}
@Test
fun andReturnsLambdaAnswer() {
every { mock.op(any()) } returns 3 andThenAnswer { 5 }
assertEquals(3, mock.op(1))
assertEquals(5, mock.op(2))
assertEquals(5, mock.op(3))
}
@Test
fun andReturnsTwoLambdasAnswer() {
every { mock.op(any()) } returns 3 andThenAnswer { 4 } andThenAnswer { 5 }
assertEquals(3, mock.op(1))
assertEquals(4, mock.op(2))
assertEquals(5, mock.op(3))
assertEquals(5, mock.op(4))
}
@Test
fun andReturnsCoLambdaAnswer() {
every { mock.op(any()) } returns 3 coAndThen { 5 }
assertEquals(3, mock.op(1))
assertEquals(5, mock.op(2))
assertEquals(5, mock.op(3))
}
@Test
fun andReturnsTwoCoLambdasAnswer() {
every { mock.op(any()) } returns 3 coAndThen { 4 } coAndThen { 5 }
assertEquals(3, mock.op(1))
assertEquals(4, mock.op(2))
assertEquals(5, mock.op(3))
assertEquals(5, mock.op(4))
}
@Test
fun andReturnsAnswerClassAnswer() {
every { mock.op(any()) } returns 3 andThenAnswer ConstantAnswer(5)
assertEquals(3, mock.op(1))
assertEquals(5, mock.op(2))
assertEquals(5, mock.op(3))
}
@Test
fun andReturnsAnswerClassTwiceAnswer() {
every { mock.op(any()) } returns 3 andThenAnswer ConstantAnswer(4) andThenAnswer ConstantAnswer(5)
assertEquals(3, mock.op(1))
assertEquals(4, mock.op(2))
assertEquals(5, mock.op(3))
assertEquals(5, mock.op(4))
}
@Test
fun andThrows() {
every { mock.op(any()) } returns 3 andThenThrows RuntimeException("error")
assertEquals(3, mock.op(1))
assertFailsWith(RuntimeException::class) {
mock.op(2)
}
}
@Test
fun andThrowsTwice() {
every { mock.op(any()) } returns 3 andThenThrows IllegalArgumentException("error1") andThenThrows IllegalStateException(
"error2"
)
assertEquals(3, mock.op(1))
assertFailsWith(IllegalArgumentException::class) {
mock.op(2)
}
assertFailsWith(IllegalStateException::class) {
mock.op(3)
}
}
@Test
fun andThrowsMany() {
val exceptions = listOf(
IllegalArgumentException("error1"),
NullPointerException("error2"),
NoSuchElementException("error3")
)
every { mock.op(any()) } throwsMany exceptions
assertFailsWith(IllegalArgumentException::class) {
mock.op(2)
}
assertFailsWith(NullPointerException::class) {
mock.op(3)
}
assertFailsWith(NoSuchElementException::class) {
mock.op(3)
}
assertFailsWith(NoSuchElementException::class) {
mock.op(4)
}
}
@Test
fun andThenThrowsMany() {
val exceptions = listOf(
IllegalArgumentException("error1"),
NullPointerException("error2"),
NoSuchElementException("error3")
)
every { mock.op(any()) } returns 3 andThenThrowsMany exceptions andThen 2
assertEquals(3, mock.op(1))
assertFailsWith(IllegalArgumentException::class) {
mock.op(2)
}
assertFailsWith(NullPointerException::class) {
mock.op(3)
}
assertFailsWith(NoSuchElementException::class) {
mock.op(3)
}
assertEquals(2, mock.op(4))
assertEquals(2, mock.op(5))
}
@Test
fun arbitraryLengthCheck() {
every {
mock.op(any())
}.returns(3)
.andThen(4)
.andThenMany(listOf(5, 6))
.andThen(7)
.andThenAnswer(ConstantAnswer(8))
.andThenThrows(IllegalArgumentException())
.andThenAnswer() { 9 }
.coAndThen { 10 }
.andThenThrows(IllegalStateException())
.andThen(11)
assertEquals(3, mock.op(1))
assertEquals(4, mock.op(2))
assertEquals(5, mock.op(3))
assertEquals(6, mock.op(4))
assertEquals(7, mock.op(5))
assertEquals(8, mock.op(6))
assertFailsWith(IllegalArgumentException::class) {
mock.op(7)
}
assertEquals(9, mock.op(8))
assertEquals(10, mock.op(9))
assertFailsWith(IllegalStateException::class) {
mock.op(10)
}
assertEquals(11, mock.op(11))
assertEquals(11, mock.op(12))
}
class MockCls {
fun op(a: Int): Int = a + 1
}
}