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How to use createInstance method of org.mockito.kotlin.internal.CreateInstance class

Best Mockito-kotlin code snippet using org.mockito.kotlin.internal.CreateInstance.createInstance

DependencyState.kt

Source:DependencyState.kt

...71        }72    }73    private fun provideInstance(): T {74        val instance = when (mode) {75            DependencyMode.REAL, DependencyMode.AUTO_PROVIDED -> createInstance()76            DependencyMode.MOCK -> createMock()77            DependencyMode.SPY -> Mockito.spy(createInstance())78            DependencyMode.PROVIDED -> createProvidedInstance()79        }80        this.instanceField = instance81        return instance82    }83    private fun createMock(): T =84        mockProvider?.let { it(dependencyProviderScope) } ?: createDefaultMock()85    private fun createDefaultMock(): T = Mockito.mock(configuration.clazz.java)86    private fun createInstance(): T {87        return realProvider?.let {88            createInstanceBy(it)89        } ?: createInstanceAutomatically()90    }91    private fun createInstanceAutomatically(): T {92        return try {93            val constructor = getConstructor()94            val constructorArguments = getConstructorArguments(constructor)95            constructor.call(*constructorArguments)96        } catch (exception: Exception) {97            throw RuntimeException(98                "Couldn't automatically construct instance of dependency \"$configuration\"",99                exception100            )101        }102    }103    private fun getConstructorArguments(constructor: KFunction<T>): Array<Any> {104        return constructor.getParameterTypes()105            .map(::getSubDependencyInstanceOfType)106            .toTypedArray()107    }108    private fun KFunction<T>.getParameterTypes() =109        this.parameters.map { it.type.classifier as KClass<*> }110    private fun getConstructor(): KFunction<T> {111        val constructors = configuration.clazz.constructors112        if (configuration.clazz.isAbstract) {113            throw IllegalArgumentException(114                "Dependencies like \"${configuration.clazz.simpleName}\" which are abstract can not be " +115                    "auto-provided. Please define how to instantiate it by adding a " +116                    "`provide<${configuration.clazz.simpleName}> { ... }` configuration!"117            )118        }119        if (constructors.size > 1) {120            throw IllegalArgumentException(121                "Dependencies like \"${configuration.clazz.simpleName}\" which have more than one constructor " +122                    "can't be auto-provided. Please define how to instantiate it by adding a " +123                    "`provide<${configuration.clazz.simpleName}> { ... }` configuration!"124            )125        }126        val constructor = constructors.first()127        return constructor128    }129    private fun getSubDependencyInstanceOfType(dependencyType: KClass<*>): Any {130        return try {131            TestEnvironment.dependencies.getDependencyState(dependencyType).instance132        } catch (exception: Exception) {133            throw RuntimeException(134                "The constructor of \"${configuration.clazz.simpleName}\" needs an instance of dependency " +135                    "\"${dependencyType.simpleName}\", but but it could not be retrieved.",136                exception137            )138        }139    }140    private fun createProvidedInstance(): T {141        return provider?.let {142            createInstanceBy(it)143        } ?: throw RuntimeException(144            "Cannot create provided instance, because `provider` is not set."145        )146    }147    private fun createInstanceBy(provider: DependencyProvider<T>): T {148        return try {149            provider(dependencyProviderScope)150        } catch (dependencyException: DependencyInstanceInitializationException) {151            throw dependencyException152        } catch (mockitoException: MockitoException) {153            throw mockitoException154        } catch (throwable: Throwable) {155            throw DependencyInstanceInitializationException("Provider for \"$configuration\" failed", throwable)156        }157    }158    class DependencyInstanceInitializationException(message: String, cause: Throwable) :159        Exception(message, cause)160}...

Matchers.kt

Source:Matchers.kt

...22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN23 * THE SOFTWARE.24 */25package org.mockito.kotlin26import org.mockito.kotlin.internal.createInstance27import org.mockito.ArgumentMatcher28import org.mockito.ArgumentMatchers29/** Object argument that is equal to the given value. */30fun <T> eq(value: T): T {31    return ArgumentMatchers.eq(value) ?: value32}33/**  Object argument that is the same as the given value. */34fun <T> same(value: T): T {35    return ArgumentMatchers.same(value) ?: value36}37/** Matches any object, excluding nulls. */38inline fun <reified T : Any> any(): T {39    return ArgumentMatchers.any(T::class.java) ?: createInstance()40}41/** Matches anything, including nulls. */42inline fun <reified T : Any> anyOrNull(): T {43    return ArgumentMatchers.any<T>() ?: createInstance()44}45/** Matches any vararg object, including nulls. */46inline fun <reified T : Any> anyVararg(): T {47    return ArgumentMatchers.any<T>() ?: createInstance()48}49/** Matches any array of type T. */50inline fun <reified T : Any?> anyArray(): Array<T> {51    return ArgumentMatchers.any(Array<T>::class.java) ?: arrayOf()52}53/**54 * Creates a custom argument matcher.55 * `null` values will never evaluate to `true`.56 *57 * @param predicate An extension function on [T] that returns `true` when a [T] matches the predicate.58 */59inline fun <reified T : Any> argThat(noinline predicate: T.() -> Boolean): T {60    return ArgumentMatchers.argThat { arg: T? -> arg?.predicate() ?: false } ?: createInstance(61          T::class62    )63}64/**65 * Registers a custom ArgumentMatcher. The original Mockito function registers the matcher and returns null,66 * here the required type is returned.67 *68 * @param matcher The ArgumentMatcher on [T] to be registered.69 */70inline fun <reified T : Any> argThat(matcher: ArgumentMatcher<T>): T {71    return ArgumentMatchers.argThat(matcher) ?: createInstance()72}73/**74 * Alias for [argThat].75 *76 * Creates a custom argument matcher.77 * `null` values will never evaluate to `true`.78 *79 * @param predicate An extension function on [T] that returns `true` when a [T] matches the predicate.80 */81inline fun <reified T : Any> argForWhich(noinline predicate: T.() -> Boolean): T {82    return argThat(predicate)83}84/**85 * Creates a custom argument matcher.86 * `null` values will never evaluate to `true`.87 *88 * @param predicate A function that returns `true` when given [T] matches the predicate.89 */90inline fun <reified T : Any> argWhere(noinline predicate: (T) -> Boolean): T {91    return argThat(predicate)92}93/**94 * Argument that implements the given class.95 */96inline fun <reified T : Any> isA(): T {97    return ArgumentMatchers.isA(T::class.java) ?: createInstance()98}99/**100 * `null` argument.101 */102fun <T : Any> isNull(): T? = ArgumentMatchers.isNull()103/**104 * Not `null` argument.105 */106fun <T : Any> isNotNull(): T? {107    return ArgumentMatchers.isNotNull()108}109/**110 * Not `null` argument.111 */112fun <T : Any> notNull(): T? {113    return ArgumentMatchers.notNull()114}115/**116 * Object argument that is reflection-equal to the given value with support for excluding117 * selected fields from a class.118 */119inline fun <reified T : Any> refEq(value: T, vararg excludeFields: String): T {120    return ArgumentMatchers.refEq<T>(value, *excludeFields) ?: createInstance()121}...

KStubbing.kt

Source:KStubbing.kt

...22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN23 * THE SOFTWARE.24 */25package org.mockito.kotlin26import org.mockito.kotlin.internal.createInstance27import kotlinx.coroutines.runBlocking28import org.mockito.Mockito29import org.mockito.stubbing.OngoingStubbing30import kotlin.reflect.KClass31inline fun <T> stubbing(32    mock: T,33    stubbing: KStubbing<T>.(T) -> Unit34) {35    KStubbing(mock).stubbing(mock)36}37inline fun <T : Any> T.stub(stubbing: KStubbing<T>.(T) -> Unit): T {38    return apply { KStubbing(this).stubbing(this) }39}40class KStubbing<out T>(val mock: T) {41    fun <R> on(methodCall: R): OngoingStubbing<R> = Mockito.`when`(methodCall)42    fun <R : Any> onGeneric(methodCall: T.() -> R?, c: KClass<R>): OngoingStubbing<R> {43        val r = try {44            mock.methodCall()45        } catch (e: NullPointerException) {46            // An NPE may be thrown by the Kotlin type system when the MockMethodInterceptor returns a47            // null value for a non-nullable generic type.48            // We catch this NPE to return a valid instance.49            // The Mockito state has already been modified at this point to reflect50            // the wanted changes.51            createInstance(c)52        }53        return Mockito.`when`(r)54    }55    inline fun <reified R : Any> onGeneric(noinline methodCall: T.() -> R?): OngoingStubbing<R> {56        return onGeneric(methodCall, R::class)57    }58    fun <R> on(methodCall: T.() -> R): OngoingStubbing<R> {59        return try {60            Mockito.`when`(mock.methodCall())61        } catch (e: NullPointerException) {62            throw MockitoKotlinException(63                  "NullPointerException thrown when stubbing.\nThis may be due to two reasons:\n\t- The method you're trying to stub threw an NPE: look at the stack trace below;\n\t- You're trying to stub a generic method: try `onGeneric` instead.",64                  e65            )...

CreateInstance.kt

Source:CreateInstance.kt

...24 */25package org.mockito.kotlin.internal26import kotlin.reflect.KClass27import java.lang.reflect.Array as JavaArray28inline fun <reified T : Any> createInstance(): T {29    return when (T::class) {30        Boolean::class -> false as T31        Byte::class -> 0.toByte() as T32        Char::class -> 0.toChar() as T33        Short::class -> 0.toShort() as T34        Int::class -> 0 as T35        Long::class -> 0L as T36        Float::class -> 0f as T37        Double::class -> 0.0 as T38        else -> createInstance(T::class)39    }40}41fun <T : Any> createInstance(kClass: KClass<T>): T {42    return castNull()43}44/**45 * Uses a quirk in the bytecode generated by Kotlin46 * to cast [null] to a non-null type.47 *48 * See https://youtrack.jetbrains.com/issue/KT-8135.49 */50@Suppress("UNCHECKED_CAST")51private fun <T> castNull(): T = null as T...

Mockito.kt

Source:Mockito.kt

1package com.tschuchort.compiletesting2import com.nhaarman.mockitokotlin2.internal.createInstance3import org.mockito.AdditionalMatchers4class MockitoAdditionalMatchersKotlin {5    companion object {6        inline fun <reified T : Any> not(matcher: T): T {7            return AdditionalMatchers.not(matcher) ?: createInstance()8        }9        inline fun <reified T : Any> or(left: T, right: T): T {10            return AdditionalMatchers.or(left, right) ?: createInstance()11        }12        inline fun <reified T : Any> and(left: T, right: T): T {13            return AdditionalMatchers.and(left, right) ?: createInstance()14        }15        inline fun <reified T : Comparable<T>> geq(value: T): T {16            return AdditionalMatchers.geq(value) ?: createInstance()17        }18        inline fun <reified T : Comparable<T>> leq(value: T): T {19            return AdditionalMatchers.leq(value) ?: createInstance()20        }21        inline fun <reified T : Comparable<T>> gt(value: T): T {22            return AdditionalMatchers.gt(value) ?: createInstance()23        }24        inline fun <reified T : Comparable<T>> lt(value: T): T {25            return AdditionalMatchers.lt(value) ?: createInstance()26        }27        inline fun <reified T : Comparable<T>> cmpEq(value: T): T {28            return AdditionalMatchers.cmpEq(value) ?: createInstance()29        }30        fun find(regex: Regex): String {31            return AdditionalMatchers.find(regex.pattern) ?: createInstance()32        }33        fun eq(value: Float, delta: Float): Float {34            return AdditionalMatchers.eq(value, delta)35        }36        fun eq(value: Double, delta: Double): Double {37            return AdditionalMatchers.eq(value, delta)38        }39    }40}...

TestUtils.kt

Source:TestUtils.kt

1package eywa.projectcodex2import eywa.projectcodex.components.archerRoundScore.scorePad.infoTable.ScorePadData3import org.mockito.ArgumentCaptor4import org.mockito.Mockito5class TestUtils {6    companion object {7        private val defaultColumnHeaderOrder = listOf(8                ScorePadData.ColumnHeader.END_STRING,9                ScorePadData.ColumnHeader.HITS,10                ScorePadData.ColumnHeader.SCORE,11                ScorePadData.ColumnHeader.GOLDS,12                ScorePadData.ColumnHeader.RUNNING_TOTAL13        )14        /**15         * Use this when the usual argumentCaptor.capture() apparently throws a null16         *17         * Source:18         * - https://stackoverflow.com/a/4606420419         * - https://github.com/android/architecture-components-samples/blob/master/BasicRxJavaSampleKotlin/app/src/test/java/com/example/android/observability/MockitoKotlinHelpers.kt20         *21         * @return ArgumentCaptor.capture() as nullable type to avoid java.lang.IllegalStateException when null is22         * returned23         */24        fun <T> capture(argumentCaptor: ArgumentCaptor<T>): T = argumentCaptor.capture()25        /**26         * Source: https://github.com/mockito/mockito-kotlin/blob/main/mockito-kotlin/src/main/kotlin/org/mockito/kotlin/internal/CreateInstance.kt27         * TODO Use kotlin mockito library ^^28         */29        fun <T> anyMatcher(): T = Mockito.any() ?: castNull()30        @Suppress("UNCHECKED_CAST")31        private fun <T> castNull(): T = null as T32    }33}...

ParametersTransformerTest.kt

Source:ParametersTransformerTest.kt

...4import org.mockito.kotlin.doReturn5import org.mockito.kotlin.mock6import org.mockito.kotlin.whenever7import kotlin.reflect.KParameter8import kotlin.reflect.full.createInstance9internal class ParametersTransformerTest {10    @Test11    fun `create WithNoAnnotations returnsBodyTransformer`() {12        val param = mock<KParameter>().also {13            doReturn(emptyList<Annotation>()).whenever(it).annotations14        }15        assert(ParametersTransformerFactory.create(param) is BodyParametersTransformer)16    }17    @Test18    fun `create WithMultipleAnnotations withoutBodyAnnotation returnsBodyTransformer`() {19        val param = mock<KParameter>().also {20            doReturn(listOf(CordaSerializable::class.createInstance())).whenever(it).annotations21        }22        assert(ParametersTransformerFactory.create(param) is BodyParametersTransformer)23    }24}...

NullCasterTest.kt

Source:NullCasterTest.kt

1package test.createinstance2import com.nhaarman.expect.expect3import org.mockito.kotlin.internal.createInstance4import org.junit.Test5import test.TestBase6class NullCasterTest : TestBase() {7    @Test8    fun createInstance() {9        /* When */10        val result = createInstance(String::class)11        /* Then */12        expect(result).toBeNull()13    }14    @Test15    fun kotlinAcceptsNullValue() {16        /* Given */17        val s: String = createInstance(String::class)18        /* When */19        acceptNonNullableString(s)20    }21    private fun acceptNonNullableString(@Suppress("UNUSED_PARAMETER") s: String) {22    }23}...

createInstance

Using AI Code Generation

1val mock = createInstance<Mock> ( )2val mock = createInstance ( )3val mock = createInstance<Mock> ( )4val mock = createInstance ( )5val mock = createInstance<Mock> ( )6val mock = createInstance ( )7val mock = createInstance<Mock> ( )8val mock = createInstance ( )9val mock = createInstance<Mock> ( )10val mock = createInstance ( )11val mock = createInstance<Mock> ( )12val mock = createInstance ( )13val mock = createInstance<Mock> ( )14val mock = createInstance ( )15val mock = createInstance<Mock> ( )16val mock = createInstance ( )17val mock = createInstance<Mock> ( )18val mock = createInstance ( )19val mock = createInstance<Mock> ( )20val mock = createInstance ( )21val mock = createInstance<Mock> ( )

createInstance

Using AI Code Generation

1val mock = createInstance<Mock>()2val mock = createInstance<Mock>(constructorArgs = arrayOf("arg1", 2))3val mock = createInstance<Mock>(constructorArgs = arrayOf("arg1", 2), name = "customName")4val mock = createInstance<Mock>(name = "customName")5val mock = createInstance<Mock>(constructorArgs = arrayOf("arg1", 2), name = "customName")6val mock = createInstance<Mock>(name = "customName")7val mock = createInstance<Mock>(constructorArgs = arrayOf("arg1", 2), name = "customName")8val mock = createInstance<Mock>(name = "customName")9val mock = createInstance<Mock>(constructorArgs = arrayOf("arg1", 2), name = "customName")10val mock = createInstance<Mock>(name = "customName")11val mock = createInstance<Mock>(constructorArgs = arrayOf("arg1", 2), name = "customName")12val mock = createInstance<Mock>(name = "customName")13val mock = createInstance<Mock>(constructorArgs = arrayOf("arg1", 2), name = "customName")

createInstance

Using AI Code Generation

1    val mock = createInstance<MockedClass>()2    whenever(mock.foo()).thenReturn("bar")3    assertEquals("bar", mock.foo())4    verify(mock).foo()5}6fun `test createInstance with parameters`() {7    val mock = createInstance(MockedClass::class, "foo", 1)8    whenever(mock.foo()).thenReturn("bar")9    assertEquals("bar", mock.foo())10    verify(mock).foo()11}12fun `test createInstance with companion object`() {13    val mock = createInstance(MockedClass::class, Companion)14    whenever(mock.foo()).thenReturn("bar")15    assertEquals("bar", mock.foo())16    verify(mock).foo()17}18fun `test createInstance with companion object and parameters`() {19    val mock = createInstance(MockedClass::class, Companion, "foo", 1

createInstance

Using AI Code Generation

1val mock = createInstance<MockedClass>()2verify(mock).method()3whenever(mock.method()).thenReturn("some value")4doReturn("some value").whenever(mock).method()5doThrow(RuntimeException("some error")).whenever(mock).method()6doAnswer { "some value" }.whenever(mock).method()7doAnswer { throw RuntimeException("some error") }.whenever(mock).method()8doAnswer { mock.method() }.whenever(mock).method()9val mock = createInstance<MockedClass>()10verify(mock).method()11whenever(mock.method()).thenReturn("some value")12doReturn("some value").whenever(mock).method()13doThrow(RuntimeException("some error")).whenever(mock).method()14doAnswer { "some value" }.whenever(mock).method()15doAnswer { throw RuntimeException("some error") }.whenever(mock).method()16doAnswer { mock.method() }.whenever(mock).method()17val mock = createInstance<MockedClass>()18verify(mock).method()19whenever(mock.method()).thenReturn("some value")20doReturn("some value").whenever(mock).method()21doThrow(RuntimeException

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