How to use UniqueNames class of io.kotest.core.names package

Best Kotest code snippet using io.kotest.core.names.UniqueNames

JUnitTestEngineListener.kt

Source:JUnitTestEngineListener.kt Github

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...3import io.kotest.core.descriptors.Descriptor4import io.kotest.core.descriptors.DescriptorId5import io.kotest.core.descriptors.toDescriptor6import io.kotest.core.names.DisplayNameFormatter7import io.kotest.core.names.UniqueNames8import io.kotest.core.test.TestCase9import io.kotest.core.test.TestResult10import io.kotest.core.test.TestType11import io.kotest.engine.errors.ExtensionExceptionExtractor12import io.kotest.engine.interceptors.EngineContext13import io.kotest.engine.listener.AbstractTestEngineListener14import io.kotest.engine.test.names.DefaultDisplayNameFormatter15import io.kotest.engine.test.names.getDisplayNameFormatter16import io.kotest.mpp.Logger17import io.kotest.mpp.bestName18import org.junit.platform.engine.EngineExecutionListener19import org.junit.platform.engine.TestDescriptor20import org.junit.platform.engine.TestExecutionResult21import org.junit.platform.engine.support.descriptor.ClassSource22import org.junit.platform.engine.support.descriptor.EngineDescriptor23import kotlin.reflect.KClass24import kotlin.time.Duration25/**26 * Notifies JUnit Platform of test statuses via a [EngineExecutionListener].27 *28 * This is not thread safe and should only be invoked by one spec at a time.29 *30 * JUnit platform supports out of order notification of tests, in that sibling31 * tests can be executing in parallel and updating JUnit out of order. However the gradle test32 * task gets confused if we are executing two or more tests directly under the root at once.33 * Therefore we must queue up notifications until each spec is completed.34 *35 * Gradle test run observations:36 *37 * using Platform 1.6.0 --38 * TestDescriptor.Type.CONTAINER seem to be ignored in output.39 * TestDescriptor.Type.CONTAINER_AND_TEST appear as siblings of their nested tests if not added as a child40 * Add child first, then register dynamic test, then start the test41 *42 * Top level descriptors must have a source attached or the execution will fail with a parent attached exception.43 * Type.CONTAINER_TEST doesn't seem to work as a top level descriptor, it will hang44 * leaf tests do not need to be completed but they will be marked as uncomplete in intellij.45 * Dynamic test can be called after or before addChild.46 * A Type.TEST can be a child of a Type.TEST.47 * Intermediate Type.CONTAINER seem to be ignored in output.48 * Intermediate containers can have same class source as parent.49 * Type.TEST as top level seems to hang.50 * A TEST doesn't seem to be able to have the same source as a parent, or hang.51 * A TEST seems to hang if it has a ClassSource.52 * MethodSource seems to be ok with a TEST.53 * Container test names seem to be taken from a Source.54 * Nested tests are outputted as siblings.55 * Can complete executions out of order.56 * Child failures will fail parent CONTAINER.57 * Sibling containers can start and finish in parallel.58 *59 * Intellij runner observations:60 *61 * Intermediate Type.CONTAINERs are shown.62 * Intermediate Type.TESTs are shown.63 * A Type.TEST can be a child of a Type.TEST64 * MethodSource seems to be ok with a TEST.65 * Container test names seem to be taken from the name property.66 * Nested tests are outputted as nested.67 * Child failures will not fail containing TEST.68 * child failures will fail a containing CONTAINER.69 * Call addChild _before_ registering test otherwise will appear in the display out of order.70 * Must start tests after their parent or they can go missing.71 * Sibling containers can start and finish in parallel.72 */73class JUnitTestEngineListener(74 private val listener: EngineExecutionListener,75 val root: EngineDescriptor,76) : AbstractTestEngineListener() {77 private val logger = Logger(JUnitTestEngineListener::class)78 private var formatter: DisplayNameFormatter = DefaultDisplayNameFormatter(ProjectConfiguration())79 // contains a mapping of junit TestDescriptor's, so we can find previously registered tests80 private val descriptors = mutableMapOf<Descriptor, TestDescriptor>()81 private var started = false82 private val startedTests = mutableSetOf<Descriptor.TestDescriptor>()83 // the root tests are our entry point when outputting results84 private val rootTests = mutableListOf<TestCase>()85 private var failOnIgnoredTests = false86 private val children = mutableMapOf<Descriptor, MutableList<TestCase>>()87 private val results = mutableMapOf<Descriptor, TestResult>()88 private val dummies = hashSetOf<String>()89 override suspend fun engineStarted() {90 logger.log { Pair(null, "Engine started") }91 listener.executionStarted(root)92 }93 override suspend fun engineInitialized(context: EngineContext) {94 failOnIgnoredTests = context.configuration.failOnIgnoredTests95 formatter = getDisplayNameFormatter(context.configuration.registry, context.configuration)96 }97 override suspend fun engineFinished(t: List<Throwable>) {98 logger.log { Pair(null, "Engine finished; throwables=[${t}]") }99 registerExceptionPlaceholders(t)100 val result = if (failOnIgnoredTests && results.values.any { it.isIgnored }) {101 TestExecutionResult.failed(RuntimeException("Build contained ignored test"))102 } else {103 TestExecutionResult.successful()104 }105 logger.log { Pair(null, "Notifying junit that engine completed $root") }106 listener.executionFinished(root, result)107 }108 override suspend fun specStarted(kclass: KClass<*>) {109 markSpecStarted(kclass)110 }111 override suspend fun specFinished(kclass: KClass<*>, result: TestResult) {112 val t = result.errorOrNull113 when {114 // if we have a spec error before we even started the spec, we will start the spec, add a placeholder115 // to hold the error, mark that test as failed, and then fail the spec as well116 t != null && !started -> {117 val descriptor = markSpecStarted(kclass)118 addPlaceholderTest(descriptor, t, kclass)119 logger.log { Pair(kclass.bestName(), "execution failed: $descriptor $t") }120 listener.executionFinished(descriptor, TestExecutionResult.failed(t))121 }122 // if we had an error in the spec, and we had no tests, we'll add the dummy and return123 t != null && rootTests.isEmpty() -> {124 val descriptor = getSpecDescriptor(kclass)125 addPlaceholderTest(descriptor, t, kclass)126 logger.log { Pair(kclass.bestName(), "execution failed: $descriptor $t") }127 listener.executionFinished(descriptor, TestExecutionResult.failed(t))128 }129 else -> {130 val descriptor = getSpecDescriptor(kclass)131 val result = when (t) {132 null -> TestExecutionResult.successful()133 else -> {134 addPlaceholderTest(descriptor, t, kclass)135 TestExecutionResult.successful()136 }137 }138 logger.log { Pair(kclass.bestName(), "executionFinished: $descriptor") }139 listener.executionFinished(descriptor, result)140 }141 }142 reset()143 }144 override suspend fun specIgnored(kclass: KClass<*>, reason: String?) {145 logger.log { Pair(kclass.bestName(), "Spec is being flagged as ignored") }146 listener.executionSkipped(getSpecDescriptor(kclass), reason)147 }148 private fun markSpecStarted(kclass: KClass<*>): TestDescriptor {149 return try {150 val descriptor = getSpecDescriptor(root, kclass.toDescriptor(), formatter.format(kclass))151 logger.log { Pair(kclass.bestName(), "Registering dynamic spec $descriptor") }152 listener.dynamicTestRegistered(descriptor)153 logger.log { Pair(kclass.bestName(), "Spec executionStarted $descriptor") }154 listener.executionStarted(descriptor)155 started = true156 descriptor157 } catch (t: Throwable) {158 logger.log { Pair(kclass.bestName(), "Error in JUnit Platform listener $t") }159 throw t160 }161 }162 private fun reset() {163 rootTests.clear()164 children.clear()165 results.clear()166 started = false167 descriptors.clear()168 startedTests.clear()169 }170 private fun addPlaceholderTest(parent: TestDescriptor, t: Throwable, kclass: KClass<*>) {171 val (name, cause) = ExtensionExceptionExtractor.resolve(t)172 val descriptor = createTestDescriptor(173 parent.uniqueId.append(Segment.Test.value, name),174 name,175 TestDescriptor.Type.TEST,176 ClassSource.from(kclass.java),177 false178 )179 parent.addChild(descriptor)180 listener.dynamicTestRegistered(descriptor)181 listener.executionStarted(descriptor)182 listener.executionFinished(descriptor, TestResult.Error(Duration.ZERO, cause).toTestExecutionResult())183 }184 override suspend fun testStarted(testCase: TestCase) {185 // depending on the test type, we may want to wait to notify junit, this is because gradle doesn't work186 // properly with the junit test types. Ideally, we'd just set everything to CONTAINER_AND_TEST, which is187 // supposed to mean a test can contain other tests as well as being a test itself, which is exactly how188 // Kotest views tests, but unfortunately it doesn't work properly.189 //190 // Another approach is to wait until the spec finishes to see which tests contain children and which191 // don't and set the test type appropriately, but junit doesn't give us a way to specify test duration192 // (instead it just calculates it itself from the time between marking a test as started and marking193 // it as finished), so this approach works but ends up having all tests as 0ms194 //195 // So the approach we will take is use the TestType from the test definition, unless it is dynamic,196 // then for dynamic we will calculate it later, and accept the 0ms drawback197 logger.log { Pair(testCase.name.testName, "test started") }198 if (testCase.parent != null) rootTests.add(testCase)199 addChild(testCase)200 when (testCase.type) {201 TestType.Container -> startTestIfNotStarted(testCase, TestDescriptor.Type.CONTAINER)202 TestType.Test -> startTestIfNotStarted(testCase, TestDescriptor.Type.TEST)203 TestType.Dynamic -> Unit204 }205 }206 // this test can be output now it has completed as we have all we need to know to complete it207 override suspend fun testFinished(testCase: TestCase, result: TestResult) {208 logger.log { Pair(testCase.name.testName, "test finished $result") }209 results[testCase.descriptor] = result210 val descriptor = getOrCreateTestDescriptor(testCase, null)211 // we need to ensure all parents have been started first212 startParents(testCase)213 startTestIfNotStarted(testCase, null)214 logger.log { Pair(testCase.name.testName, "executionFinished: $descriptor") }215 listener.executionFinished(descriptor, result.toTestExecutionResult())216 }217 override suspend fun testIgnored(testCase: TestCase, reason: String?) {218 logger.log { Pair(testCase.name.testName, "test ignored $reason") }219 if (testCase.parent == null) rootTests.add(testCase)220 addChild(testCase)221 results[testCase.descriptor] = TestResult.Ignored(reason)222 // we need to ensure all parents have been started first223 startParents(testCase)224 val descriptor = getOrCreateTestDescriptor(testCase, TestDescriptor.Type.TEST)225 logger.log { Pair(testCase.name.testName, "Registering dynamic test: $descriptor") }226 listener.dynamicTestRegistered(descriptor)227 logger.log { Pair(testCase.name.testName, "executionSkipped: $descriptor") }228 listener.executionSkipped(descriptor, reason)229 }230 private fun addChild(testCase: TestCase) {231 children.getOrPut(testCase.descriptor.parent) { mutableListOf() }.add(testCase)232 }233 private fun startParents(testCase: TestCase) {234 val parent = testCase.parent235 if (parent != null) {236 startParents(parent)237 startTestIfNotStarted(parent, null)238 }239 }240 private fun startTestIfNotStarted(testCase: TestCase, type: TestDescriptor.Type?) {241 if (!startedTests.contains(testCase.descriptor)) {242 val descriptor = getOrCreateTestDescriptor(testCase, type)243 logger.log { Pair(testCase.name.testName, "Registering dynamic test: $descriptor") }244 listener.dynamicTestRegistered(descriptor)245 logger.log { Pair(testCase.name.testName, "executionStarted: $descriptor") }246 listener.executionStarted(descriptor)247 startedTests.add(testCase.descriptor)248 }249 }250 private fun getOrCreateTestDescriptor(testCase: TestCase, type: TestDescriptor.Type?): TestDescriptor {251 val existing = descriptors[testCase.descriptor]252 if (existing != null) return existing253 val parent = when (val p = testCase.parent) {254 null -> getSpecDescriptor(testCase.spec::class)255 else -> getOrCreateTestDescriptor(p, null)256 }257 val id = parent.uniqueId.append(testCase.descriptor)258 // we dynamically work out the type if null by looking to see if this test had any children259 val c = children[testCase.descriptor]260 val t = when {261 type != null -> type262 c == null || c.isEmpty() -> TestDescriptor.Type.TEST263 else -> TestDescriptor.Type.CONTAINER264 }265 return createTestDescriptor(266 id,267 formatter.format(testCase),268 t,269 ClassSource.from(testCase.spec::class.java, null), // gradle-junit-platform hides tests if we don't send this270 type == TestDescriptor.Type.CONTAINER271 ).apply {272 parent.addChild(this)273 descriptors[testCase.descriptor] = this274 }275 }276 private fun getSpecDescriptor(kclass: KClass<*>): TestDescriptor {277 return getSpecDescriptor(root, kclass.toDescriptor(), formatter.format(kclass))278 }279 private fun createAndRegisterDummySpec(name: String): TestDescriptor {280 val unique = UniqueNames.unique(name, dummies) { s, k -> "${s}_$k" } ?: name281 dummies.add(unique)282 val descriptor = getSpecDescriptor(root, Descriptor.SpecDescriptor(DescriptorId(unique), this::class), unique)283 listener.dynamicTestRegistered(descriptor)284 return descriptor285 }286 private fun registerExceptionPlaceholders(ts: List<Throwable>) {287 ts.forEach {288 val (name, cause) = ExtensionExceptionExtractor.resolve(it)289 val container = createAndRegisterDummySpec(name)290 listener.executionStarted(container)291 listener.executionFinished(container, TestExecutionResult.failed(cause))292 }293 }294}...

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DuplicateTestNameHandler.kt

Source:DuplicateTestNameHandler.kt Github

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1package io.kotest.engine.test.names2import io.kotest.core.names.DuplicateTestNameMode3import io.kotest.core.names.TestName4import io.kotest.core.names.UniqueNames5/**6 * Tracks test names for a context, and based on the given [DuplicateTestNameMode] either fails7 * on duplicates, warns on duplicates, or modifies names to be unique.8 */9internal class DuplicateTestNameHandler(private val mode: DuplicateTestNameMode) {10 private val names = mutableSetOf<String>()11 private fun message(name: String): String =12 "Duplicated test name ${name}. To disable this message, set DuplicateTestNameMode to None."13 /**14 * Returns a unique name or null if the name is already unique.15 */16 fun handle(name: TestName): String? {17 val isUnique = names.add(name.testName)18 if (isUnique) return null19 return when (mode) {20 DuplicateTestNameMode.Error -> throw DuplicateTestNameException(message(name.testName))21 DuplicateTestNameMode.Silent -> makeUniqueName(name.testName)22 DuplicateTestNameMode.Warn -> {23 println("WARN: " + message(name.testName))24 makeUniqueName(name.testName)25 }26 }27 }28 private fun makeUniqueName(name: String): String {29 val unique = UniqueNames.unique(name, names) ?: name30 names.add(unique)31 return unique32 }33}34class DuplicateTestNameException(message: String) : RuntimeException(message)...

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UniqueNamesTest.kt

Source:UniqueNamesTest.kt Github

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1package com.sksamuel.kotest.engine.names2import io.kotest.core.names.UniqueNames3import io.kotest.core.spec.style.FunSpec4import io.kotest.matchers.shouldBe5class UniqueNamesTest : FunSpec() {6 init {7 test("should make repeated names unique") {8 UniqueNames.unique("foo", emptySet()) shouldBe null9 UniqueNames.unique("foo", setOf("foo")) shouldBe "(1) foo"10 UniqueNames.unique("foo", setOf("foo", "(1) foo")) shouldBe "(2) foo"11 UniqueNames.unique("foo", setOf("foo", "(1) foo", "(2) foo")) shouldBe "(3) foo"12 UniqueNames.unique("foo", setOf("foo", "(1) foo")) shouldBe "(2) foo"13 }14 }15}...

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UniqueNames.kt

Source:UniqueNames.kt Github

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1package io.kotest.core.names2object UniqueNames {3 /**4 * Returns a unique ident for the given ident and current idents.5 *6 * @param genNext returns the next ident to consider, using the iteration count and the raw ident7 */8 fun unique(9 ident: String,10 indents: Set<String>,11 genNext: (String, Int) -> String = { s, k -> "($k) $s" }12 ): String? {13 if (!indents.contains(ident)) return null14 var n = 115 fun next() = genNext(ident, n)16 while (indents.contains(next()))...

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UniqueNames

Using AI Code Generation

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1val spec = object : FunSpec() {2override fun uniqueNames() = UniqueNames.Keep3}4val spec = object : FunSpec() {5override fun uniqueNames() = UniqueNames.Keep6}7val spec = object : FunSpec() {8override fun uniqueNames() = UniqueNames.Keep9}10val spec = object : FunSpec() {11override fun uniqueNames() = UniqueNames.Keep12}13val spec = object : FunSpec() {14override fun uniqueNames() = UniqueNames.Keep15}16val spec = object : FunSpec() {17override fun uniqueNames() = UniqueNames.Keep18}19val spec = object : FunSpec() {20override fun uniqueNames() = UniqueNames.Keep21}22val spec = object : FunSpec() {23override fun uniqueNames() = UniqueNames.Keep24}25val spec = object : FunSpec() {26override fun uniqueNames() = UniqueNames.Keep27}28val spec = object : FunSpec() {29override fun uniqueNames() = UniqueNames.Keep30}31val spec = object : FunSpec() {32override fun uniqueNames() = UniqueNames.Keep33}34val spec = object : FunSpec() {35override fun uniqueNames() = UniqueNames.Keep36}37val spec = object : FunSpec() {38override fun uniqueNames() = UniqueNames.Keep39}40val spec = object : FunSpec() {41override fun uniqueNames() = UniqueNames

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UniqueNames

Using AI Code Generation

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1import io.kotest.core.names.*2class MyTest : FunSpec() {3 init {4 val unique = UniqueNames()5 test("test 1") { ... }6 test("test 2") { ... }7 test(unique("test 3")) { ... }8 test(unique("test 3")) { ... }9 }10}11import io.kotest.core.names.*12class MyTest : FunSpec() {13 init {14 val unique = UniqueNames()15 test("test 1") { ... }16 test("test 2") { ... }17 test(unique("test 3")) { ... }18 test(unique("test 3")) { ... }19 }20}21You can also use the unique() top level function:22import io.kotest.core.names.*23class MyTest : FunSpec() {24 init {25 test("test 1") { ... }26 test("test 2") { ... }27 test(unique("test 3")) { ... }28 test(unique("test 3")) { ... }29 }30}31It is also possible to use the unique() top level function with the test() top level function:32import io.kotest.core.names.*33test("test 1") { ... }34test("test 2") { ... }35test(unique("test 3")) { ... }36test(unique("test 3")) { ... }37It is also possible to use the unique() top level function with the spec() top level function:38import io.kotest.core.names.*39spec {40 test("test 1") { ... }41 test("test 2") { ... }42 test(unique("test 3")) { ... }43 test(unique("test 3")) { ... }44}45If you want to use the unique() top level function with the describe() top level function, you can use the UniqueNames() class of io.kotest.core.names package and the unique() top level function as follows:46import io.kotest.core.names.*47describe("MyTest") {48 val unique = UniqueNames()

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UniqueNames

Using AI Code Generation

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1val names = UniqueNames()2val a = names.test("test A") {3}4val b = names.test("test A") {5}6val c = names.test("test A") {7}8val d = names.test("test A") {9}10val e = names.test("test B") {11}12val f = names.test("test B") {13}14val g = names.test("test C") {15}16val h = names.test("test C") {17}18val i = names.test("test D") {19}20val j = names.test("test D") {21}22val k = names.test("test D") {23}24val l = names.test("test D") {25}26val m = names.test("test D") {27}28val n = names.test("test D") {29}30val o = names.test("test D") {31}32val p = names.test("test D") {33}34val q = names.test("test D") {35}36val r = names.test("test D") {37}38val s = names.test("test D") {39}40val t = names.test("test D") {41}42val u = names.test("test D") {43}44val v = names.test("test D") {45}46val w = names.test("test D") {47}48val x = names.test("test D") {49}50val y = names.test("test D") {51}52val z = names.test("test D") {53}54val aa = names.test("test D") {55}56val ab = names.test("test D") {

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