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How to use classgraph method of io.kotest.framework.discovery.DiscoveryResult class

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

Discovery.kt

Source:Discovery.kt

1@file:Suppress("unused")2package io.kotest.framework.discovery3import io.github.classgraph.ClassGraph4import io.github.classgraph.ClassInfo5import io.kotest.core.extensions.DiscoveryExtension6import io.kotest.core.internal.KotestEngineProperties7import io.kotest.core.spec.Spec8import io.kotest.mpp.log9import io.kotest.mpp.syspropOrEnv10import java.lang.management.ManagementFactory11import java.util.concurrent.ConcurrentHashMap12import kotlin.reflect.KClass13//import kotlin.script.templates.standard.ScriptTemplateWithArgs14/**15 * Contains the results of a discovery request scan.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..." }121      val start = System.currentTimeMillis()122      // first filter down to spec instances only, then load the full class123      val loadedClasses = request124         .selectors125         .asSequence()126         .filterIsInstance<DiscoverySelector.ClassDiscoverySelector>()127         .map { Class.forName(it.className, false, this::class.java.classLoader) }128         .filter(isSpecSubclass)129         .map { Class.forName(it.name).kotlin }130         .filterIsInstance<KClass<out Spec>>()131         .toList()132      val duration = System.currentTimeMillis() - start133      log { "Discovery: Loading of selected classes completed in ${duration}ms" }134      return loadedClasses135   }136   /**137    * Returns a list of [Spec] classes detected using classgraph in the list of138    * locations specified by the uris param.139    */140   private fun scanUris(): List<KClass<out Spec>> {141      log {142         val uptime = ManagementFactory.getRuntimeMXBean().uptime143         "Discovery: Starting test discovery scan... [uptime=$uptime]"144      }145      val result = scanResult.value146         .getSubclasses(Spec::class.java.name)147         .map { Class.forName(it.name).kotlin }148         .filterIsInstance<KClass<out Spec>>()149      log {150         val start = System.currentTimeMillis()151         val duration = System.currentTimeMillis() - start152         "Discovery: Test discovery completed in ${duration}ms"153      }154      return result155   }156   private fun classgraph(): ClassGraph {157      @Suppress("DEPRECATION")158      return ClassGraph()159         .enableClassInfo()160         .enableExternalClasses()161         .ignoreClassVisibility()162         .disableNestedJarScanning()163         // do not change this to use reject as it will break clients using older versions of classgraph164         .blacklistPackages(165            "java.*",166            "javax.*",167            "sun.*",168            "com.sun.*",169            "kotlin.*",170            "kotlinx.*",171            "androidx.*",172            "org.jetbrains.kotlin.*",173            "org.junit.*"174         ).apply {175            if (syspropOrEnv(KotestEngineProperties.disableJarDiscovery) == "true") {176               disableJarScanning()177            }...

classgraph

Using AI Code Generation

1val discoveryResult = DiscoveryResult(DiscoveryRequest())2println(classes)3val discoveryResult = DiscoveryResult(DiscoveryRequest())4println(classes)5}6}

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