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How to use Matchers class of org.mockito.kotlin package

Best Mockito-kotlin code snippet using org.mockito.kotlin.Matchers

TestUserService.kt

Source:TestUserService.kt

...7import org.junit.jupiter.api.Assertions.assertArrayEquals8import org.junit.jupiter.api.BeforeEach9import org.junit.jupiter.api.Test10import org.junit.jupiter.api.extension.ExtendWith11import org.mockito.ArgumentMatchers12import org.mockito.Mock13import org.mockito.Mockito14import org.mockito.junit.jupiter.MockitoExtension15import org.mockito.kotlin.any16import org.mockito.kotlin.eq17import org.mockito.kotlin.verify18import org.mockito.kotlin.whenever19import java.util.*20import java.util.stream.IntStream21import kotlin.test.assertEquals22import kotlin.test.assertNotNull23import kotlin.test.assertNull24@ExtendWith(MockitoExtension::class)25class TestUserService(26    @Mock val userRepository: UserRepository27) {28    private lateinit var userService: UserService29    @BeforeEach30    fun setUp() {31        userService = UserService(userRepository)32    }33    @Test34    fun `Test addUser method - username exists`() {35        val u = User(1, "", "", "test", "test", true, "test", "test")36        whenever(userRepository.findByUsername(ArgumentMatchers.anyString())).thenReturn(listOf(u))37        val addUser = userService.addUser(u)38        verify(userRepository, Mockito.times(1)).findByUsername(any())39        verify(userRepository, Mockito.times(0)).insert(eq(u))40        assertNull(addUser)41    }42    @Test43    fun `Test addUser method - userRepository returns null`() {44        val u = User(1, "", "", "test", "test", true, "test", "test")45        whenever(userRepository.findByUsername(ArgumentMatchers.anyString())).thenReturn(null)46        Assertions.assertThrows(NullPointerException::class.java) {userService.addUser(u)}47        verify(userRepository, Mockito.times(1)).findByUsername(any())48        verify(userRepository, Mockito.times(0)).insert(eq(u))49    }50    @Test51    fun `Test addUser method - insert successful`() {52        val u = User(1, "", "", "test", "test", true, "test", "test")53        whenever(userRepository.findByUsername(any())).thenReturn(listOf())54        whenever(userRepository.insert(eq(u))).thenReturn(u)55        val addUser = userService.addUser(u)56        verify(userRepository, Mockito.times(1)).findByUsername(any())57        verify(userRepository, Mockito.times(1)).insert(eq(u))58        assertEquals(u, addUser)59    }60    @Test61    fun `Test addUser method - insert unsuccessful`() {62        val u = User(1, "", "", "test", "test", true, "test", "test")63        whenever(userRepository.findByUsername(any())).thenReturn(listOf(u))64        whenever(userRepository.insert(eq(u))).thenReturn(null)65        val addUser = userService.addUser(u)66        verify(userRepository, Mockito.times(1)).findByUsername(any())67        verify(userRepository, Mockito.times(0)).insert(eq(u))68        assertNull(addUser)69    }70    @Test71    fun `Test getUser method - user doesn't exists`() {72        whenever(userRepository.findById(any())).thenReturn(Optional.empty())73        val getUser = userService.getUser(1)74        verify(userRepository, Mockito.times(1)).findById(any())75        assertNull(getUser)76    }77    @Test78    fun `Test getUser method - user exists`() {79        val u = User(1, "", "", "test", "test", true, "test", "test")80        whenever(userRepository.findById(any())).thenReturn(Optional.of(u))81        val getUser = userService.getUser(1)82        verify(userRepository, Mockito.times(1)).findById(any())83        assertNotNull(getUser)84        assertEquals(u, getUser)85    }86    @Test87    fun `Test getUsers method - user exists`() {88        val u = User(1, "", "", "test", "test", true, "test", "test")89        val users = IntStream.range(1, 5).mapToObj { u }.toList()90        whenever(userRepository.findAll()).thenReturn(users)91        val getUsers = userService.getUsers()92        verify(userRepository, Mockito.times(1)).findAll()93        assertNotNull(getUsers)94        assertArrayEquals(users.toTypedArray(), getUsers.toTypedArray())95    }96    @Test97    fun `Test login method - username doesn't exists`() {98        val u = User(1, "", "", "test", "test", true, "test", "test")99        whenever(userRepository.findByUsername(ArgumentMatchers.anyString())).thenReturn(listOf())100        val userModel = userService.login("test", "test")101        verify(userRepository, Mockito.times(1)).findByUsername(any())102        assertNull(userModel)103    }104    @Test105    fun `Test login method - wrong password`() {106        whenever(userRepository.findByUsername(ArgumentMatchers.anyString())).thenReturn(107            listOf(108                User(1, "", "", "test", "test2", true, "test", "test"),109                User(2, "", "", "test2", "test2", true, "test2", "test2")110            )111        )112        val userModel = userService.login("test", "test")113        verify(userRepository, Mockito.times(1)).findByUsername(any())114        assertNull(userModel)115    }116    @Test117    fun `Test login method - isOnline false`() {118        whenever(userRepository.findByUsername(ArgumentMatchers.anyString())).thenReturn(119            listOf(120                User(1, "", "", "test", "test2", true, "test", "test"),121                User(2, "", "", "test2", "test2", false, "test2", "test2")122            )123        )124        val userModel = userService.login("test", "test2")125        verify(userRepository, Mockito.times(1)).findByUsername(any())126        assertNotNull(userModel)127        assertEquals(userModel.username, "test")128    }129    @Test130    fun `Test login method - saving with error`() {131        whenever(userRepository.findByUsername(ArgumentMatchers.anyString())).thenReturn(132            listOf(133                User(1, "", "", "test", "test", true, "test", "test"),134                User(2, "", "", "test2", "test2", true, "test2", "test2")135            )136        )137        whenever(userRepository.save(ArgumentMatchers.any(User::class.java))).thenThrow(RuntimeException())138        Assertions.assertThrows(RuntimeException::class.java) { userService.login("test", "test") }139        verify(userRepository, Mockito.times(1)).findByUsername(any())140        verify(userRepository, Mockito.times(1)).save(any())141    }142    @Test143    fun `Test login method - throws exception`() {144        whenever(userRepository.findByUsername(ArgumentMatchers.anyString())).thenThrow(MongoClientException(""))145        whenever(userRepository.save(ArgumentMatchers.any(User::class.java))).thenThrow(RuntimeException())146        Assertions.assertThrows(MongoClientException::class.java) { userService.login("test", "test") }147        verify(userRepository, Mockito.times(1)).findByUsername(any())148        verify(userRepository, Mockito.times(0)).save(any())149    }150    @Test151    fun `Test login method - saving successful`() {152        whenever(userRepository.findByUsername(ArgumentMatchers.anyString())).thenReturn(153            listOf(154                User(1, "", "", "test", "test", true, "test", "test"),155                User(2, "", "", "test2", "test2", true, "test2", "test2")156            )157        )158        whenever(userRepository.save(ArgumentMatchers.any(User::class.java))).thenReturn(null)159        val user = userService.login("test", "test")160        verify(userRepository, Mockito.times(1)).findByUsername(any())161        verify(userRepository, Mockito.times(1)).save(any())162        assertNotNull(user)163        assertEquals(164            user, UserUserModel(165                User(1, "", "", "test", "test", true, user.lastOnline, "test")166            )167        )168    }169    @Test170    fun `Test getOnlineUsers method`() {171        whenever(userRepository.findAll()).thenReturn(172            listOf(...

StatusResultMatchersExtensionsTests.kt

Source:StatusResultMatchersExtensionsTests.kt

...23import org.mockito.Answers24import org.mockito.Mock25import org.mockito.junit.MockitoJUnitRunner26@RunWith(MockitoJUnitRunner::class)27class StatusResultMatchersExtensionsTests {28	@Mock(answer = Answers.RETURNS_MOCKS)29	lateinit var matchers: StatusResultMatchers30	@Test31	fun `StatusResultMatchers#is with Matcher parameter is called as expected when using isEqualTo extension`() {32		val matcher = mock<Matcher<Int>>()33		matchers.isEqualTo(matcher)34		verify(matchers, times(1)).`is`(matcher)35	}36	@Test37	fun `StatusResultMatchers#is with int parameter is called as expected when using isEqualTo extension`() {38		matchers.isEqualTo(200)39		verify(matchers, times(1)).`is`(200)40	}41}...

Matchers

Using AI Code Generation

1val mock = mock<SomeClass>()2whenever(mock.someFunction(any())).thenReturn(1)3verify(mock).someFunction(argThat { it > 0 })4val mock = mock<SomeClass>()5whenever(mock.someFunction(any())).thenReturn(1)6verify(mock).someFunction(argThat { it > 0 })7val mock = mock<SomeClass>()8whenever(mock.someFunction(any())).thenReturn(1)9verify(mock).someFunction(argThat { it > 0 })10val mock = mock<SomeClass>()11whenever(mock.someFunction(any())).thenReturn(1)12verify(mock).someFunction(argThat { it > 0 })13val mock = mock<SomeClass>()14whenever(mock.someFunction(any())).thenReturn(1)15verify(mock).someFunction(argThat { it > 0 })16val mock = mock<SomeClass>()17whenever(mock.someFunction(any())).thenReturn(1)18verify(mock).someFunction(argThat { it > 0 })19val mock = mock<SomeClass>()20whenever(mock.someFunction(any())).thenReturn(1)21verify(mock).someFunction(argThat { it > 0 })22val mock = mock<SomeClass>()23whenever(mock.someFunction(any())).thenReturn(1)24verify(mock).someFunction(argThat { it > 0 })25val mock = mock<SomeClass>()26whenever(mock.someFunction(any())).thenReturn(1)27verify(mock).someFunction(argThat { it > 0 })28val mock = mock<SomeClass>()29whenever(mock.someFunction(any())).thenReturn(1)30verify(mock).someFunction(argThat { it > 0 })31val mock = mock<SomeClass>()32whenever(mock.someFunction(any())).thenReturn(1)33verify(mock).someFunction(argThat { it > 0 })34val mock = mock<SomeClass>()35whenever(mock.someFunction(any())).thenReturn(1)36verify(mock).someFunction(arg

Matchers

Using AI Code Generation

1val mock = mock<SomeClass>()2every { mock.someMethod(any()) } returns "Hello World"3val result = mock.someMethod("some arg")4verify { mock.someMethod("some arg") }5assertThat(result).isEqualTo("Hello World")6val mock = mock<SomeClass>()7`when`(mock.someMethod(any())).thenReturn("Hello World")8val result = mock.someMethod("some arg")9verify(mock).someMethod("some arg")10assertThat(result).isEqualTo("Hello World")11val mock = mock<SomeClass>()12every { mock.someMethod(any()) } returns "Hello World"13val result = mock.someMethod("some arg")14verify { mock.someMethod("some arg") }15assertThat(result).isEqualTo("Hello World")16public open class Any {17}18equals(other: Any?): Boolean19hashCode(): Int20toString(): String21public inline fun <reified T : Any> any(): T = Mockito.any(T::class.java)22The any()

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