How to use KFunction.getExpectedException method of io.kotest.core.spec.style.AnnotationSpec class

Best Kotest code snippet using io.kotest.core.spec.style.AnnotationSpec.KFunction.getExpectedException

AnnotationSpec.kt

Source:AnnotationSpec.kt

1package io.kotest.core.spec.style2import io.kotest.core.extensions.Extension3import io.kotest.core.names.TestName4import io.kotest.core.source.sourceRef5import io.kotest.core.spec.RootTest6import io.kotest.core.spec.Spec7import io.kotest.core.test.TestCase8import io.kotest.core.test.TestResult9import io.kotest.core.test.TestScope10import io.kotest.core.test.TestType11import io.kotest.mpp.unwrapIfReflectionCall12import kotlin.reflect.KClass13import kotlin.reflect.KFunction14import kotlin.reflect.full.callSuspend15import kotlin.reflect.full.memberFunctions16import kotlin.reflect.jvm.isAccessible17typealias Test = AnnotationSpec.Test18abstract class AnnotationSpec : Spec() {19   override suspend fun beforeSpec(spec: Spec) {20      executeBeforeSpecFunctions()21   }22   private suspend fun executeBeforeSpecFunctions() = this::class.findBeforeSpecFunctions().forEach {23      if (it.isSuspend) it.callSuspend(this) else it.call(this)24   }25   override suspend fun beforeTest(testCase: TestCase) {26      executeBeforeTestFunctions()27   }28   private suspend fun executeBeforeTestFunctions() = this::class.findBeforeTestFunctions().forEach {29      if (it.isSuspend) it.callSuspend(this) else it.call(this)30   }31   override suspend fun afterTest(testCase: TestCase, result: TestResult) {32      executeAfterTestFunctions()33   }34   private suspend fun executeAfterTestFunctions() = this::class.findAfterTestFunctions().forEach {35      if (it.isSuspend) it.callSuspend(this) else it.call(this)36   }37   override suspend fun afterSpec(spec: Spec) {38      executeAfterSpecFunctions()39   }40   private suspend fun executeAfterSpecFunctions() = this::class.findAfterSpecFunctions().forEach {41      if (it.isSuspend) it.callSuspend(this) else it.call(this)42   }43   private fun KFunction<*>.toIgnoredRootTest(): RootTest {44      return deriveRootTest(true)45   }46   private fun KFunction<*>.toEnabledRootTest(): RootTest {47      return deriveRootTest(false)48   }49   private fun KFunction<*>.deriveRootTest(disabled: Boolean): RootTest {50      return if (this.isExpectingException()) {51         val expected = this.getExpectedException()52         RootTest(53            name = TestName(name),54            test = callExpectingException(expected),55            source = sourceRef(),56            type = TestType.Test,57            config = null,58            disabled = disabled,59            factoryId = null,60         )61      } else {62         RootTest(63            name = TestName(name),64            test = callNotExpectingException(),65            source = sourceRef(),66            type = TestType.Test,67            config = null,68            disabled = disabled,69            factoryId = null,70         )71      }72   }73   override fun rootTests(): List<RootTest> {74      val tests = this::class.findRootTests()75      val nested = this::class.findNestedTests()76      return tests + nested77   }78   override fun globalExtensions(): List<Extension> {79      return emptyList()80   }81   private fun KFunction<*>.isExpectingException(): Boolean {82      return annotations.filterIsInstance<Test>().first().expected != Test.None::class83   }84   private fun KFunction<*>.getExpectedException(): KClass<out Throwable> {85      return annotations.filterIsInstance<Test>().first().expected86   }87   private fun KClass<*>.findRootTests(): List<RootTest> {88      return findTestFunctions().map { f ->89         f.isAccessible = true90         if (f.isIgnoredTest()) {91            f.toIgnoredRootTest()92         } else {93            f.toEnabledRootTest()94         }95      }96   }97   private fun KClass<out AnnotationSpec>.findNestedTests(): List<RootTest> {98      return nestedClasses99         .filter { kclass -> kclass.annotations.map { it.annotationClass }.contains(Nested::class) }100         .flatMap { it.findRootTests() }101   }102   private fun KFunction<*>.callExpectingException(expected: KClass<out Throwable>): suspend TestScope.() -> Unit {103      return {104         val thrown = try {105            callSuspend(this@AnnotationSpec)106            null107         } catch (t: Throwable) {108            t.unwrapIfReflectionCall()109         } ?: failNoExceptionThrown(expected)110         if (thrown::class != expected) failWrongExceptionThrown(expected, thrown)111      }112   }113   private fun KFunction<*>.callNotExpectingException(): suspend TestScope.() -> Unit {114      return {115         try {116            callSuspend(this@AnnotationSpec)117         } catch (t: Throwable) {118            throw t.unwrapIfReflectionCall()119         }120      }121   }122   private fun failNoExceptionThrown(expected: KClass<out Throwable>): Nothing {123      throw AssertionError("Expected exception of class ${expected.simpleName}, but no exception was thrown.")124   }125   private fun failWrongExceptionThrown(expected: KClass<out Throwable>, thrown: Throwable): Nothing {126      throw AssertionError("Expected exception of class ${expected.simpleName}, but ${thrown::class.simpleName} was thrown instead.")127   }128   // All annotations should be kept inside this class, to avoid any usage outside of AnnotationSpec.129   // One can only use annotations to execute code inside AnnotationSpec.130   /**131    * Marks a function to be executed before each test132    *133    * This can be used in AnnotationSpec to mark a function to be executed before every test by Kotest Engine134    * @see BeforeAll135    * @see AfterEach136    */137   annotation class BeforeEach138   /**139    * Marks a function to be executed before each test140    *141    * This can be used in AnnotationSpec to mark a function to be executed before every test by Kotest Engine142    * @see BeforeClass143    * @see After144    */145   annotation class Before146   /**147    * Marks a function to be executed before each spec148    *149    * This can be used in AnnotationSpec to mark a function to be executed before a spec by Kotest Engine.150    * @see BeforeEach151    * @see AfterAll152    */153   annotation class BeforeAll154   /**155    * Marks a function to be executed before each spec156    *157    * This can be used in AnnotationSpec to mark a function to be executed before a spec by Kotest Engine.158    * @see Before159    * @see AfterClass160    */161   annotation class BeforeClass162   /**163    * Marks a function to be executed after each test164    *165    * This can be used in AnnotationSpec to mark a function to be executed before a test by Kotest Engine.166    * @see AfterAll167    * @see BeforeEach168    */169   annotation class AfterEach170   /**171    * Marks a function to be executed after each test172    *173    * This can be used in AnnotationSpec to mark a function to be executed before a test by Kotest Engine.174    * @see AfterClass175    * @see Before176    */177   annotation class After178   /**179    * Marks a function to be executed after each spec180    *181    * This can be used in AnnotationSpec to mark a function to be executed before a spec by Kotest Engine.182    * @see AfterEach183    * @see BeforeAll184    */185   annotation class AfterAll186   /**187    * Marks a function to be executed after each spec188    *189    * This can be used in AnnotationSpec to mark a function to be executed before a spec by Kotest Engine.190    * @see After191    * @see BeforeClass192    */193   annotation class AfterClass194   /**195    * Marks a function to be executed as a Test196    *197    * This can be used in AnnotationSpec to mark a function to be executed as a test by Kotest Engine.198    *199    *200    * [expected] can be used to mark a test to expect a specific exception.201    *202    * This is useful when moving from JUnit, in which you use expected to verify for an exception.203    *204    * ```205    *  @Test(expected = FooException::class)206    *  fun foo() {207    *    throw FooException()  // Pass208    *  }209    *210    *  @Test(expected = FooException::class211    *  fun bar() {212    *    throw BarException() // Fails, FooException was expected213    *  }214    * ```215    */216   annotation class Test(val expected: KClass<out Throwable> = None::class) {217      object None : Throwable()218   }219   /**220    * Marks a Test to be ignored221    *222    * This can be used in AnnotationSpec to mark a Test as Ignored.223    */224   annotation class Ignore225   annotation class Nested226}227internal fun KClass<out AnnotationSpec>.findBeforeTestFunctions() =228   findFunctionAnnotatedWithAnyOf(AnnotationSpec.BeforeEach::class, AnnotationSpec.Before::class)229internal fun KClass<out AnnotationSpec>.findBeforeSpecFunctions() =230   findFunctionAnnotatedWithAnyOf(AnnotationSpec.BeforeAll::class, AnnotationSpec.BeforeClass::class)231internal fun KClass<out AnnotationSpec>.findAfterSpecFunctions() =232   findFunctionAnnotatedWithAnyOf(AnnotationSpec.AfterAll::class, AnnotationSpec.AfterClass::class)233internal fun KClass<out AnnotationSpec>.findAfterTestFunctions() =234   findFunctionAnnotatedWithAnyOf(AnnotationSpec.AfterEach::class, AnnotationSpec.After::class)235internal fun KClass<*>.findTestFunctions(): List<KFunction<*>> =236   findFunctionAnnotatedWithAnyOf(AnnotationSpec.Test::class)237internal fun KFunction<*>.isIgnoredTest() = isFunctionAnnotatedWithAnyOf(AnnotationSpec.Ignore::class)238internal fun KClass<*>.findFunctionAnnotatedWithAnyOf(vararg annotation: KClass<*>): List<KFunction<*>> =239   memberFunctions.filter { it.isFunctionAnnotatedWithAnyOf(*annotation) }240internal fun KFunction<*>.isFunctionAnnotatedWithAnyOf(vararg annotation: KClass<*>) =241   annotations.any { it.annotationClass in annotation }...

KFunction.getExpectedException

Using AI Code Generation

1fun testGetExpectedException() {2    val method = AnnotationSpec::class.java.getDeclaredMethod("testGetExpectedException")3    val expectedException = method.getExpectedException()4    assertEquals(NullPointerException::class.java, expectedException)5}6fun testGetExpectedException() {7    val method = StringSpec::class.java.getDeclaredMethod("testGetExpectedException")8    val expectedException = method.getExpectedException()9    assertEquals(NullPointerException::class.java, expectedException)10}11fun testGetExpectedException() {12    val method = WordSpec::class.java.getDeclaredMethod("testGetExpectedException")13    val expectedException = method.getExpectedException()14    assertEquals(NullPointerException::class.java, expectedException)15}16fun testGetExpectedException() {17    val method = BehaviorSpec::class.java.getDeclaredMethod("testGetExpectedException")18    val expectedException = method.getExpectedException()19    assertEquals(NullPointerException::class.java, expectedException)20}21fun testGetExpectedException() {22    val method = ExpectSpec::class.java.getDeclaredMethod("testGetExpectedException")23    val expectedException = method.getExpectedException()24    assertEquals(NullPointerException::class.java, expectedException)25}26fun testGetExpectedException() {27    val method = FreeSpec::class.java.getDeclaredMethod("testGetExpectedException")28    val expectedException = method.getExpectedException()29    assertEquals(NullPointerException::class.java, expectedException)30}31fun testGetExpectedException() {32    val method = FeatureSpec::class.java.getDeclaredMethod("testGetExpectedException")33    val expectedException = method.getExpectedException()34    assertEquals(NullPointerException::class.java, expectedException)35}

KFunction.getExpectedException

Using AI Code Generation

1annotation class TestAnnotationWithException(val expectedException: KClass<out Throwable>)2@TestAnnotationWithException(AssertionError::class)3class AnnotationSpecExample : AnnotationSpec() {4    fun test1() {5        assertEquals(1, 2)6    }

KFunction.getExpectedException

Using AI Code Generation

1class AnnotationSpecExample : AnnotationSpec() {2   fun test() {3      throw RuntimeException("This is a RuntimeException")4   }5   @Test(expectedExceptions = [RuntimeException::class])6   fun testWithExpectedException() {7      throw RuntimeException("This is a RuntimeException")8   }9   @Test(expectedExceptions = [RuntimeException::class, IOException::class])10   fun testWithMultipleExpectedExceptions() {11      throw IOException("This is an IOException")12   }13   @Test(expectedExceptions = [RuntimeException::class])14   fun testWithNoException() {15      println("This method should fail because no exception was thrown")16   }17   @Test(expectedExceptions = [RuntimeException::class])18   fun testWithDifferentException() {19      throw IOException("This is an IOException")20   }21}22class FunSpecExample : FunSpec({23   test("test") {24      throw RuntimeException("This is a RuntimeException")25   }26   test("test with expected exception") {27      throw RuntimeException("This is a RuntimeException")28   }.config(expectedExceptions = [RuntimeException::class])29   test("test with multiple expected exceptions") {30      throw IOException("This is an IOException")31   }.config(expectedExceptions = [RuntimeException::class, IOException::class])32   test("test with no exception") {33      println("This method should fail because no exception was thrown")34   }.config(expectedExceptions = [RuntimeException::class])35   test("test with different exception") {36      throw IOException("This is an IOException")37   }.config(expectedExceptions = [RuntimeException::class])38})39class FreeSpecExample : FreeSpec({40   "test" - {41      throw RuntimeException("This is a RuntimeException")42   }43   "test with expected exception" - {44      throw RuntimeException("This is a RuntimeException")45   }.config(expectedExceptions = [RuntimeException::class])46   "test with multiple expected exceptions" - {47      throw IOException("This is an IOException")48   }.config(expectedExceptions = [RuntimeException::class, IOException::class])49   "test with no exception" - {50      println("This method should fail because no exception was thrown")51   }.config(expectedExceptions = [RuntimeException::class])52   "test with different exception" - {53      throw IOException("This is an IOException")54   }.config(expected

KFunction.getExpectedException

Using AI Code Generation

1class   MyTest   :   AnnotationSpec ()   { 2     fun   `test with expected exception`()   { 3         assertThrows < IllegalArgumentException >   { 4             throw   IllegalArgumentException () 5         } 6     } 7 }8class   MyTest   :   AnnotationSpec ()   { 9     fun   `test with expected exception`()   { 10         assertThrows < IllegalArgumentException >   { 11             throw   IllegalArgumentException () 12         } 13     } 14 }

KFunction.getExpectedException

Using AI Code Generation

1@DisplayName( "MyAnnotationSpec" )2class MyAnnotationSpec : AnnotationSpec() {3@Tag( "tag1" )4fun test1() {5}6@Tag( "tag2" )7@DisplayName( "My Test" )8fun test2() {9}10@Tag( "tag3" )11@DisplayName( "My Test" )12fun test3() {13}14@Tag( "tag4" )15fun test4() {16}17@Tag( "tag5" )18fun test5() {19}20@Tag( "tag6" )21fun test6() {22}23@Tag( "tag7" )24fun test7() {25}26@Tag( "tag8" )27fun test8() {28}29@Tag( "tag9" )30fun test9() {31}32@Tag( "tag10" )33fun test10() {34}35@Tag( "tag11" )36fun test11() {37}38@Tag( "tag12" )39fun test12() {40}41@Tag( "tag13" )42fun test13() {43}44@Tag( "tag14" )45fun test14() {46}47@Tag( "tag15" )48fun test15() {49}50@Tag( "tag16" )51fun test16() {52}53@Tag( "tag17" )54fun test17() {55}56@Tag( "tag18" )57fun test18() {58}59@Tag( "tag19" )60fun test19() {61}62@Tag( "tag20" )63fun test20() {64}65@Tag( "tag21" )66fun test21() {67}68@Tag( "tag22" )69fun test22() {70}71@Tag( "tag23" )72fun test23() {73}74@Tag( "tag24" )75fun test24() {76}77@Tag( "tag25" )78fun test25() {79}80@Tag( "tag26" )81fun test26() {82}83@Tag( "tag27" )84fun test27() {85}86@Tag( "tag28" )87fun test28() {88}89@Tag( "tag29" )90fun test29() {91}

KFunction.getExpectedException

Using AI Code Generation

1fun `test expected exception`() {2    val expectedException = func.getExpectedException()3    assertEquals(expectedException, null)4}5fun `test expected exception`() {6    val expectedException = func.getExpectedException()7    assertEquals(expectedException, null)8}9fun `test expected exception`() {10    val expectedException = func.getExpectedException()11    assertEquals(expectedException, null)12}13fun `test expected exception`() {14    val expectedException = func.getExpectedException()15    assertEquals(expectedException, null)16}17fun `test expected exception`() {18    val expectedException = func.getExpectedException()19    assertEquals(expectedException, null)20}21fun `test expected exception`() {22    val expectedException = func.getExpectedException()23    assertEquals(expectedException, null)24}25fun `test expected exception`() {26    val expectedException = func.getExpectedException()27    assertEquals(expectedException, null)28}29fun `test expected exception`() {

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