How to use ErrorCollector.throwCollectedErrors method of io.kotest.assertions.BasicErrorCollector class

Best Kotest code snippet using io.kotest.assertions.BasicErrorCollector.ErrorCollector.throwCollectedErrors


Source:ErrorCollector.kt Github


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1package io.kotest.assertions2import io.kotest.mpp.stacktraces3val errorCollector: ErrorCollector = BasicErrorCollector()4enum class ErrorCollectionMode {5   Soft, Hard6}7interface ErrorCollector {8   fun getCollectionMode(): ErrorCollectionMode9   fun setCollectionMode(mode: ErrorCollectionMode)10   /**11    * Returns the errors accumulated in the current context.12    */13   fun errors(): List<Throwable>14   /**15    * Adds the given error to the current context.16    */17   fun pushError(t: Throwable)18   /**19    * Clears all errors from the current context.20    */21   fun clear()22   fun pushClue(clue: Any)23   fun popClue()24   /**25    * Returns the current clue context.26    * That is all the clues nested to this point.27    */28   fun clueContext(): List<Any>29}30open class BasicErrorCollector : ErrorCollector {31   private val failures = mutableListOf<Throwable>()32   private var mode = ErrorCollectionMode.Hard33   private val clues = mutableListOf<Any>()34   override fun getCollectionMode(): ErrorCollectionMode = mode35   override fun setCollectionMode(mode: ErrorCollectionMode) {36      this.mode = mode37   }38   override fun pushClue(clue: Any) {39      clues.add(0, clue)40   }41   override fun popClue() {42      clues.removeAt(0)43   }44   override fun clueContext(): List<Any> = clues.toList()45   override fun pushError(t: Throwable) {46      failures.add(t)47   }48   override fun errors(): List<Throwable> = failures.toList()49   override fun clear() = failures.clear()50}51fun clueContextAsString() = errorCollector.clueContext().let {52   if (it.isEmpty()) "" else it.joinToString("\n", postfix = "\n")53}54/**55 * If we are in "soft assertion mode" will add this throwable to the56 * list of throwables for the current execution. Otherwise will57 * throw immediately.58 */59fun ErrorCollector.collectOrThrow(error: Throwable) {60   when (getCollectionMode()) {61      ErrorCollectionMode.Soft -> pushError(error)62      ErrorCollectionMode.Hard -> throw error63   }64}65/**66 * The errors for the current execution are thrown as a single67 * throwable.68 */69fun ErrorCollector.throwCollectedErrors() {70   // set the collection mode back to the default71   setCollectionMode(ErrorCollectionMode.Hard)72   val failures = errors()73   clear()74   if (failures.isNotEmpty()) {75      val t = if (failures.size == 1) failures[0] else MultiAssertionError(failures)76      stacktraces.cleanStackTrace(t)77      throw t78   }79}...

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1import io.kotest.assertions.BasicErrorCollector2val errorCollector = BasicErrorCollector()3try {4} catch (e: Throwable) {5errorCollector.add(e)6}

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