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How to use DiscoveryResult class of io.kotest.framework.discovery package

Best Kotest code snippet using io.kotest.framework.discovery.DiscoveryResult

Discovery.kt

Source:Discovery.kt

...16 *17 * @specs these are classes which extend one of the spec types18 * @scripts these are kotlin scripts which may or may not contain tests19 */20data class DiscoveryResult(21   val specs: List<KClass<out Spec>>,22   val scripts: List<KClass<*>>,23   val error: Throwable?, // this error is set if there was an exception during discovery24) {25   companion object {26      fun error(t: Throwable): DiscoveryResult = DiscoveryResult(emptyList(), emptyList(), t)27   }28}29/**30 * Scans for tests as specified by a [DiscoveryRequest].31 *32 * [DiscoveryExtension] `afterScan` functions are applied after the scan is complete to33 * optionally filter the returned classes.34 */35class Discovery(private val discoveryExtensions: List<DiscoveryExtension> = emptyList()) {36   private val requests = ConcurrentHashMap<DiscoveryRequest, DiscoveryResult>()37   // the results of a classpath scan, lazily executed and memoized.38   private val scanResult = lazy { classgraph().scan() }39   // filter functions40   //private val isScript: (KClass<*>) -> Boolean = { ScriptTemplateWithArgs::class.java.isAssignableFrom(it.java) }41   private val isSpecSubclassKt: (KClass<*>) -> Boolean = { Spec::class.java.isAssignableFrom(it.java) }42   private val isSpecSubclass: (Class<*>) -> Boolean = { Spec::class.java.isAssignableFrom(it) }43   private val isAbstract: (KClass<*>) -> Boolean = { it.isAbstract }44   private val fromClassPaths: List<KClass<out Spec>> by lazy { scanUris() }45   /**46    * Returns a function that applies all the [DiscoveryFilter]s to a given class.47    * The class must pass all the filters to be included.48    */49   private fun filterFn(filters: List<DiscoveryFilter>): (KClass<out Spec>) -> Boolean = { kclass ->50      filters.isEmpty() || filters.all { it.test(kclass) }51   }52   /**53    * Returns a function that applies all the [DiscoverySelector]s to a given class.54    * The class must pass any one selector to be included.55    */56   private fun selectorFn(selectors: List<DiscoverySelector>): (KClass<out Spec>) -> Boolean = { kclass ->57      selectors.isEmpty() || selectors.any { it.test(kclass) }58   }59   fun discover(request: DiscoveryRequest): DiscoveryResult =60      requests.getOrPut(request) { doDiscovery(request).getOrElse { DiscoveryResult.error(it) } }61//   /**62//    * Scans the classpaths for kotlin script files.63//    */64//   private fun discoverScripts(): List<KClass<out ScriptTemplateWithArgs>> {65//      log { "Discovery: Running script scan" }66//      return scanResult.value67//         .allClasses68//         .filter { it.extendsSuperclass(ScriptTemplateWithArgs::class.java.name) }69//         .map { it.load(false) }70//         .filter(isScript)71//         .filterIsInstance<KClass<out ScriptTemplateWithArgs>>()72//   }73   /**74    * Loads a class reference from a [ClassInfo].75    *76    * @param init false to avoid initializing the class77    */78   private fun ClassInfo.load(init: Boolean): KClass<out Any> =79      Class.forName(name, init, this::class.java.classLoader).kotlin80   private fun doDiscovery(request: DiscoveryRequest): Result<DiscoveryResult> = runCatching {81      val specClasses =82         if (request.onlySelectsSingleClasses()) loadSelectedSpecs(request) else fromClassPaths83      val filtered = specClasses84         .asSequence()85         .filter(selectorFn(request.selectors))86         .filter(filterFn(request.filters))87         // all classes must subclass one of the spec parents88         .filter(isSpecSubclassKt)89         // we don't want abstract classes90         .filterNot(isAbstract)91         .toList()92      log { "After filters there are ${filtered.size} spec classes" }93      log { "[Discovery] Further filtering classes via discovery extensions [$discoveryExtensions]" }94      val afterExtensions = discoveryExtensions95         .fold(filtered) { cl, ext -> ext.afterScan(cl) }96         .sortedBy { it.simpleName }97      log { "After discovery extensions there are ${afterExtensions.size} spec classes" }98      val scriptsEnabled = System.getProperty(KotestEngineProperties.scriptsEnabled) == "true" ||99         System.getenv(KotestEngineProperties.scriptsEnabled) == "true"100//      val scripts = when {101//         scriptsEnabled -> discoverScripts()102//         else -> emptyList()103//      }104      if (scanResult.isInitialized()) runCatching { scanResult.value.close() }105      log { "Discovery result [${afterExtensions.size} specs; scripts]" }106      DiscoveryResult(afterExtensions, emptyList(), null)107   }108   /**109    * Returns whether this is a request that selects single classes110    * only. Used to avoid full classpath scans when not necessary.111    */112   private fun DiscoveryRequest.onlySelectsSingleClasses(): Boolean =113      selectors.isNotEmpty() &&114         selectors.all { it is DiscoverySelector.ClassDiscoverySelector }115   /**116    * Returns a list of [Spec] classes from discovery requests that only have117    * selectors of type [DiscoverySelector.ClassDiscoverySelector].118    */119   private fun loadSelectedSpecs(request: DiscoveryRequest): List<KClass<out Spec>> {120      log { "Discovery: Loading specified classes..." }...

launcher.kt

Source:launcher.kt

...9import io.kotest.engine.TestEngineLauncher10import io.kotest.engine.listener.TestEngineListener11import io.kotest.framework.discovery.Discovery12import io.kotest.framework.discovery.DiscoveryRequest13import io.kotest.framework.discovery.DiscoveryResult14import io.kotest.framework.discovery.DiscoverySelector15import kotlin.reflect.KClass16/**17 * Creates a [TestEngineLauncher] to be used to launch the test engine.18 */19internal fun setupLauncher(20   args: LauncherArgs,21   listener: TestEngineListener,22): Result<TestEngineLauncher> = runCatching {23   val specClass = args.spec?.let { (Class.forName(it) as Class<Spec>).kotlin }24   val (specs, _, error) = specs(specClass, args.packageName)25   val filter = if (args.testpath == null || specClass == null) null else {26      TestPathTestCaseFilter(args.testpath, specClass)27   }28   if (error != null) throw error29   TestEngineLauncher(listener)30      .withExtensions(listOfNotNull(filter))31      .withTagExpression(args.tagExpression?.let { TagExpression(it) })32      .withClasses(specs)33}34/**35 * Returns the spec classes to execute by using an FQN class name, a package scan,36 * or a full scan.37 */38private fun specs(specClass: KClass<out Spec>?, packageName: String?): DiscoveryResult {39   // if the spec class was null, then we perform discovery to locate all the classes40   // otherwise that specific spec class is used41   return when (specClass) {42      null -> scan(packageName)43      else -> DiscoveryResult(listOf(specClass), emptyList(), null)44   }45}46private fun scan(packageName: String?): DiscoveryResult {47   val packageSelector = packageName?.let { DiscoverySelector.PackageDiscoverySelector(it) }48   val req = DiscoveryRequest(selectors = listOfNotNull(packageSelector))49   val discovery = Discovery(emptyList())50   return discovery.discover(req)51}52/**53 * Compares test descriptions to a given test path (delimited with ' -- ').54 * The comparison ignores test prefixes, so an application using the launcher should not55 * include test name prefixes in the test path.56 */57private class TestPathTestCaseFilter(58   private val testPath: String,59   spec: KClass<out Spec>,60) : TestFilter {...

DiscoveryResult

Using AI Code Generation

1val result = DiscoveryResult(DiscoverySelector.Classpath, listOf(DiscoverySelector.Classpath))2val selector = DiscoverySelector.Directory("directory")3val selector = DiscoverySelector.File("file")4val selector = DiscoverySelector.Package("package")5val selector = DiscoverySelector.Script("script")6val selector = DiscoverySelector.Spec("spec")7val selector = DiscoverySelector.Tag("tag")8val selector = DiscoverySelector.Test("test")9val selector = DiscoverySelector.TestClass("testClass")10val selector = DiscoverySelector.TestId("testId")11val selector = DiscoverySelector.TestPath("testPath")12val selector = DiscoverySelector.TestSuite("testSuite")13val selector = DiscoverySelector.TestType("testType")14val selector = DiscoverySelector.Wildcard("wildcard")15val selector = DiscoverySelector.Worker("worker")16val selector = DiscoverySelector.WorkerId("workerId")17val selector = DiscoverySelector.WorkerPath("workerPath")

DiscoveryResult

Using AI Code Generation

1val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())2val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())3val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())4val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())5val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())6val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())7val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())8val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())9val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())10val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())11val discoveryResult = DiscoveryResult(DiscoverySelector.default(), DiscoveryConfiguration.default())

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