How to use test method of io.kotest.matchers.collections.MatchInOrderSubsetProblem class

Best Kotest code snippet using io.kotest.matchers.collections.MatchInOrderSubsetProblem.test

CollectionMatchers.kt

Source:CollectionMatchers.kt

1package io.kotest.matchers.collections2import io.kotest.assertions.ErrorCollectionMode3import io.kotest.assertions.errorCollector4import io.kotest.assertions.print.print5import io.kotest.assertions.runWithMode6import io.kotest.matchers.Matcher7import io.kotest.matchers.MatcherResult8import io.kotest.matchers.neverNullMatcher9fun <T> existInOrder(vararg ps: (T) -> Boolean): Matcher<Collection<T>?> = existInOrder(ps.asList())10/**11 * Assert that a collections contains a subsequence that matches the given subsequence of predicates, possibly with12 * values in between.13 */14fun <T> existInOrder(predicates: List<(T) -> Boolean>): Matcher<Collection<T>?> = neverNullMatcher { actual ->15   require(predicates.isNotEmpty()) { "predicates must not be empty" }16   var subsequenceIndex = 017   val actualIterator = actual.iterator()18   while (actualIterator.hasNext() && subsequenceIndex < predicates.size) {19      if (predicates[subsequenceIndex](actualIterator.next())) subsequenceIndex += 120   }21   MatcherResult(22      subsequenceIndex == predicates.size,23      { "${actual.print().value} did not match the predicates ${predicates.print().value} in order" },24      { "${actual.print().value} should not match the predicates ${predicates.print().value} in order" }25   )26}27fun <T> haveSize(size: Int): Matcher<Collection<T>> = haveSizeMatcher(size)28fun <T> singleElement(t: T): Matcher<Collection<T>> = object : Matcher<Collection<T>> {29   override fun test(value: Collection<T>) = MatcherResult(30      value.size == 1 && value.first() == t,31      { "Collection should be a single element of $t but has ${value.size} elements: ${value.print().value}" },32      { "Collection should not be a single element of $t" }33   )34}35fun <T> singleElement(p: (T) -> Boolean): Matcher<Collection<T>> = object : Matcher<Collection<T>> {36   override fun test(value: Collection<T>): MatcherResult {37      val filteredValue: List<T> = value.filter(p)38      return MatcherResult(39         filteredValue.size == 1,40         { "Collection should have a single element by a given predicate but has ${filteredValue.size} elements: ${value.print().value}" },41         { "Collection should not have a single element by a given predicate" }42      )43   }44}45fun <T : Comparable<T>> beSorted(): Matcher<List<T>> = sorted()46fun <T : Comparable<T>> sorted(): Matcher<List<T>> = sortedBy { it }47fun <T, E : Comparable<E>> beSortedBy(transform: (T) -> E): Matcher<List<T>> = sortedBy(transform)48fun <T, E : Comparable<E>> sortedBy(transform: (T) -> E): Matcher<List<T>> = object : Matcher<List<T>> {49   override fun test(value: List<T>): MatcherResult {50      val failure = value.withIndex().firstOrNull { (i, it) -> i != value.lastIndex && transform(it) > transform(value[i + 1]) }51      val elementMessage = when (failure) {52         null -> ""53         else -> ". Element ${failure.value} at index ${failure.index} was greater than element ${value[failure.index + 1]}"54      }55      return MatcherResult(56         failure == null,57         { "List ${value.print().value} should be sorted$elementMessage" },58         { "List ${value.print().value} should not be sorted" }59      )60   }61}62fun <T> matchEach(vararg fns: (T) -> Unit): Matcher<Collection<T>?> = matchEach(fns.asList())63fun <T> matchInOrder(vararg fns: (T) -> Unit): Matcher<Collection<T>?> = matchInOrder(fns.asList(), allowGaps = false)...

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