How to use Iterable.shouldBeStrictlyDecreasingWith method of io.kotest.matchers.collections.decreasing class

Best Kotest code snippet using io.kotest.matchers.collections.decreasing.Iterable.shouldBeStrictlyDecreasingWith

matchers.kt

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1package io.kotest.matchers.collections2import io.kotest.assertions.show.show3import io.kotest.matchers.Matcher4import io.kotest.matchers.MatcherResult5import io.kotest.matchers.neverNullMatcher6import io.kotest.matchers.should7import io.kotest.matchers.shouldHave8import io.kotest.matchers.shouldNot9import kotlin.jvm.JvmName10fun <T> Iterable<T>.shouldContainOnlyNulls() = toList().shouldContainOnlyNulls()11fun <T> Array<T>.shouldContainOnlyNulls() = asList().shouldContainOnlyNulls()12fun <T> Collection<T>.shouldContainOnlyNulls() = this should containOnlyNulls()13fun <T> Iterable<T>.shouldNotContainOnlyNulls() = toList().shouldNotContainOnlyNulls()14fun <T> Array<T>.shouldNotContainOnlyNulls() = asList().shouldNotContainOnlyNulls()15fun <T> Collection<T>.shouldNotContainOnlyNulls() = this shouldNot containOnlyNulls()16fun <T> containOnlyNulls() = object : Matcher<Collection<T>> {17 override fun test(value: Collection<T>) =18 MatcherResult(19 value.all { it == null },20 "Collection should contain only nulls",21 "Collection should not contain only nulls"22 )23}24fun <T> Iterable<T>.shouldContainNull() = toList().shouldContainNull()25fun <T> Array<T>.shouldContainNull() = asList().shouldContainNull()26fun <T> Collection<T>.shouldContainNull() = this should containNull()27fun <T> Iterable<T>.shouldNotContainNull() = toList().shouldNotContainNull()28fun <T> Array<T>.shouldNotContainNull() = asList().shouldNotContainNull()29fun <T> Collection<T>.shouldNotContainNull() = this shouldNot containNull()30fun <T> containNull() = object : Matcher<Collection<T>> {31 override fun test(value: Collection<T>) =32 MatcherResult(33 value.any { it == null },34 "Collection should contain at least one null",35 "Collection should not contain any nulls"36 )37}38fun <T> Iterable<T>.shouldHaveElementAt(index: Int, element: T) = toList().shouldHaveElementAt(index, element)39fun <T> Array<T>.shouldHaveElementAt(index: Int, element: T) = asList().shouldHaveElementAt(index, element)40fun <T> List<T>.shouldHaveElementAt(index: Int, element: T) = this should haveElementAt(index, element)41fun <T> Iterable<T>.shouldNotHaveElementAt(index: Int, element: T) = toList().shouldNotHaveElementAt(index, element)42fun <T> Array<T>.shouldNotHaveElementAt(index: Int, element: T) = asList().shouldNotHaveElementAt(index, element)43fun <T> List<T>.shouldNotHaveElementAt(index: Int, element: T) = this shouldNot haveElementAt(index, element)44fun <T, L : List<T>> haveElementAt(index: Int, element: T) = object : Matcher<L> {45 override fun test(value: L) =46 MatcherResult(47 value[index] == element,48 { "Collection should contain ${element.show().value} at index $index" },49 { "Collection should not contain ${element.show().value} at index $index" }50 )51}52fun <T> Iterable<T>.shouldContainNoNulls() = toList().shouldContainNoNulls()53fun <T> Array<T>.shouldContainNoNulls() = asList().shouldContainNoNulls()54fun <T> Collection<T>.shouldContainNoNulls() = this should containNoNulls()55fun <T> Iterable<T>.shouldNotContainNoNulls() = toList().shouldNotContainNoNulls()56fun <T> Array<T>.shouldNotContainNoNulls() = asList().shouldNotContainNoNulls()57fun <T> Collection<T>.shouldNotContainNoNulls() = this shouldNot containNoNulls()58fun <T> containNoNulls() = object : Matcher<Collection<T>> {59 override fun test(value: Collection<T>) =60 MatcherResult(61 value.all { it != null },62 { "Collection should not contain nulls" },63 { "Collection should have at least one null" }64 )65}66infix fun <T> Array<T>.shouldNotContainExactlyInAnyOrder(expected: Array<T>) =67 asList().shouldNotContainExactlyInAnyOrder(expected.asList())68infix fun <T, C : Collection<T>> C?.shouldNotContainExactlyInAnyOrder(expected: C) =69 this shouldNot containExactlyInAnyOrder(expected)70fun <T, C : Collection<T>> C?.shouldNotContainExactlyInAnyOrder(vararg expected: T) =71 this shouldNot containExactlyInAnyOrder(*expected)72infix fun <T> Array<T>.shouldContainExactlyInAnyOrder(expected: Array<T>) =73 asList().shouldContainExactlyInAnyOrder(expected.asList())74infix fun <T, C : Collection<T>> C?.shouldContainExactlyInAnyOrder(expected: C) =75 this should containExactlyInAnyOrder(expected)76fun <T, C : Collection<T>> C?.shouldContainExactlyInAnyOrder(vararg expected: T) =77 this should containExactlyInAnyOrder(*expected)78fun <T> containExactlyInAnyOrder(vararg expected: T): Matcher<Collection<T>?> =79 containExactlyInAnyOrder(expected.asList())80/** Assert that a collection contains exactly the given values and nothing else, in any order. */81fun <T, C : Collection<T>> containExactlyInAnyOrder(expected: C): Matcher<C?> = neverNullMatcher { value ->82 val valueGroupedCounts: Map<T, Int> = value.groupBy { it }.mapValues { it.value.size }83 val expectedGroupedCounts: Map<T, Int> = expected.groupBy { it }.mapValues { it.value.size }84 val passed = expectedGroupedCounts.size == valueGroupedCounts.size85 && expectedGroupedCounts.all { valueGroupedCounts[it.key] == it.value }86 MatcherResult(87 passed,88 "Collection should contain ${expected.show().value} in any order, but was ${value.show().value}",89 "Collection should not contain exactly ${expected.show().value} in any order"90 )91}92infix fun <T : Comparable<T>> Iterable<T>.shouldHaveUpperBound(t: T) = toList().shouldHaveUpperBound(t)93infix fun <T : Comparable<T>> Array<T>.shouldHaveUpperBound(t: T) = asList().shouldHaveUpperBound(t)94infix fun <T : Comparable<T>, C : Collection<T>> C.shouldHaveUpperBound(t: T) = this should haveUpperBound(t)95fun <T : Comparable<T>, C : Collection<T>> haveUpperBound(t: T) = object : Matcher<C> {96 override fun test(value: C) = MatcherResult(97 value.all { it <= t },98 "Collection should have upper bound $t",99 "Collection should not have upper bound $t"100 )101}102infix fun <T : Comparable<T>> Iterable<T>.shouldHaveLowerBound(t: T) = toList().shouldHaveLowerBound(t)103infix fun <T : Comparable<T>> Array<T>.shouldHaveLowerBound(t: T) = asList().shouldHaveLowerBound(t)104infix fun <T : Comparable<T>, C : Collection<T>> C.shouldHaveLowerBound(t: T) = this should haveLowerBound(t)105fun <T : Comparable<T>, C : Collection<T>> haveLowerBound(t: T) = object : Matcher<C> {106 override fun test(value: C) = MatcherResult(107 value.all { t <= it },108 "Collection should have lower bound $t",109 "Collection should not have lower bound $t"110 )111}112fun <T> Iterable<T>.shouldBeUnique() = toList().shouldBeUnique()113fun <T> Array<T>.shouldBeUnique() = asList().shouldBeUnique()114fun <T> Collection<T>.shouldBeUnique() = this should beUnique()115fun <T> Iterable<T>.shouldNotBeUnique() = toList().shouldNotBeUnique()116fun <T> Array<T>.shouldNotBeUnique() = asList().shouldNotBeUnique()117fun <T> Collection<T>.shouldNotBeUnique() = this shouldNot beUnique()118fun <T> beUnique() = object : Matcher<Collection<T>> {119 override fun test(value: Collection<T>) = MatcherResult(120 value.toSet().size == value.size,121 "Collection should be Unique",122 "Collection should contain at least one duplicate element"123 )124}125fun <T> Iterable<T>.shouldContainDuplicates() = toList().shouldContainDuplicates()126fun <T> Array<T>.shouldContainDuplicates() = asList().shouldContainDuplicates()127fun <T> Collection<T>.shouldContainDuplicates() = this should containDuplicates()128fun <T> Iterable<T>.shouldNotContainDuplicates() = toList().shouldNotContainDuplicates()129fun <T> Array<T>.shouldNotContainDuplicates() = asList().shouldNotContainDuplicates()130fun <T> Collection<T>.shouldNotContainDuplicates() = this shouldNot containDuplicates()131fun <T> containDuplicates() = object : Matcher<Collection<T>> {132 override fun test(value: Collection<T>) = MatcherResult(133 value.toSet().size < value.size,134 "Collection should contain duplicates",135 "Collection should not contain duplicates"136 )137}138fun <T> beSortedWith(comparator: Comparator<in T>): Matcher<List<T>> = sortedWith(comparator)139fun <T> beSortedWith(cmp: (T, T) -> Int): Matcher<List<T>> = sortedWith(cmp)140fun <T> sortedWith(comparator: Comparator<in T>): Matcher<List<T>> = sortedWith { a, b ->141 comparator.compare(a, b)142}143fun <T> sortedWith(cmp: (T, T) -> Int): Matcher<List<T>> = object : Matcher<List<T>> {144 override fun test(value: List<T>): MatcherResult {145 val failure = value.withIndex().firstOrNull { (i, it) -> i != value.lastIndex && cmp(it, value[i + 1]) > 0 }146 val snippet = value.joinToString(",", limit = 10)147 val elementMessage = when (failure) {148 null -> ""149 else -> ". Element ${failure.value} at index ${failure.index} shouldn't precede element ${value[failure.index + 1]}"150 }151 return MatcherResult(152 failure == null,153 "List [$snippet] should be sorted$elementMessage",154 "List [$snippet] should not be sorted"155 )156 }157}158fun <T : Comparable<T>> Iterable<T>.shouldBeSorted() = toList().shouldBeSorted()159fun <T : Comparable<T>> Array<T>.shouldBeSorted() = asList().shouldBeSorted()160fun <T : Comparable<T>> List<T>.shouldBeSorted() = this should beSorted<T>()161fun <T : Comparable<T>> Iterable<T>.shouldNotBeSorted() = toList().shouldNotBeSorted()162fun <T : Comparable<T>> Array<T>.shouldNotBeSorted() = asList().shouldNotBeSorted()163fun <T : Comparable<T>> List<T>.shouldNotBeSorted() = this shouldNot beSorted<T>()164infix fun <T> Iterable<T>.shouldBeSortedWith(comparator: Comparator<in T>) = toList().shouldBeSortedWith(comparator)165infix fun <T> Array<T>.shouldBeSortedWith(comparator: Comparator<in T>) = asList().shouldBeSortedWith(comparator)166infix fun <T> List<T>.shouldBeSortedWith(comparator: Comparator<in T>) = this should beSortedWith(comparator)167infix fun <T> Iterable<T>.shouldNotBeSortedWith(comparator: Comparator<in T>) = toList().shouldNotBeSortedWith(comparator)168infix fun <T> Array<T>.shouldNotBeSortedWith(comparator: Comparator<in T>) = asList().shouldNotBeSortedWith(comparator)169infix fun <T> List<T>.shouldNotBeSortedWith(comparator: Comparator<in T>) = this shouldNot beSortedWith(comparator)170infix fun <T> Iterable<T>.shouldBeSortedWith(cmp: (T, T) -> Int) = toList().shouldBeSortedWith(cmp)171infix fun <T> Array<T>.shouldBeSortedWith(cmp: (T, T) -> Int) = asList().shouldBeSortedWith(cmp)172infix fun <T> List<T>.shouldBeSortedWith(cmp: (T, T) -> Int) = this should beSortedWith(cmp)173infix fun <T> Iterable<T>.shouldNotBeSortedWith(cmp: (T, T) -> Int) = toList().shouldNotBeSortedWith(cmp)174infix fun <T> Array<T>.shouldNotBeSortedWith(cmp: (T, T) -> Int) = asList().shouldNotBeSortedWith(cmp)175infix fun <T> List<T>.shouldNotBeSortedWith(cmp: (T, T) -> Int) = this shouldNot beSortedWith(cmp)176fun <T : Comparable<T>> Iterable<T>.shouldBeMonotonicallyIncreasing() = toList().shouldBeMonotonicallyIncreasing()177fun <T : Comparable<T>> Array<T>.shouldBeMonotonicallyIncreasing() = asList().shouldBeMonotonicallyIncreasing()178fun <T : Comparable<T>> List<T>.shouldBeMonotonicallyIncreasing() = this should beMonotonicallyIncreasing<T>()179fun <T : Comparable<T>> Iterable<T>.shouldNotBeMonotonicallyIncreasing() = toList().shouldNotBeMonotonicallyIncreasing()180fun <T : Comparable<T>> Array<T>.shouldNotBeMonotonicallyIncreasing() = asList().shouldNotBeMonotonicallyIncreasing()181fun <T : Comparable<T>> List<T>.shouldNotBeMonotonicallyIncreasing() = this shouldNot beMonotonicallyIncreasing<T>()182fun <T> List<T>.shouldBeMonotonicallyIncreasingWith(comparator: Comparator<in T>) =183 this should beMonotonicallyIncreasingWith(comparator)184fun <T> Iterable<T>.shouldBeMonotonicallyIncreasingWith(comparator: Comparator<in T>) =185 toList().shouldBeMonotonicallyIncreasingWith(comparator)186fun <T> Array<T>.shouldBeMonotonicallyIncreasingWith(comparator: Comparator<in T>) =187 asList().shouldBeMonotonicallyIncreasingWith(comparator)188fun <T> List<T>.shouldNotBeMonotonicallyIncreasingWith(comparator: Comparator<in T>) =189 this shouldNot beMonotonicallyIncreasingWith(comparator)190fun <T> Iterable<T>.shouldNotBeMonotonicallyIncreasingWith(comparator: Comparator<in T>) =191 toList().shouldNotBeMonotonicallyIncreasingWith(comparator)192fun <T> Array<T>.shouldNotBeMonotonicallyIncreasingWith(comparator: Comparator<in T>) =193 asList().shouldNotBeMonotonicallyIncreasingWith(comparator)194fun <T : Comparable<T>> Iterable<T>.shouldBeMonotonicallyDecreasing() = toList().shouldBeMonotonicallyDecreasing()195fun <T : Comparable<T>> Array<T>.shouldBeMonotonicallyDecreasing() = asList().shouldBeMonotonicallyDecreasing()196fun <T : Comparable<T>> List<T>.shouldBeMonotonicallyDecreasing() = this should beMonotonicallyDecreasing<T>()197fun <T : Comparable<T>> Iterable<T>.shouldNotBeMonotonicallyDecreasing() = toList().shouldNotBeMonotonicallyDecreasing()198fun <T : Comparable<T>> Array<T>.shouldNotBeMonotonicallyDecreasing() = asList().shouldNotBeMonotonicallyDecreasing()199fun <T : Comparable<T>> List<T>.shouldNotBeMonotonicallyDecreasing() = this shouldNot beMonotonicallyDecreasing<T>()200fun <T> List<T>.shouldBeMonotonicallyDecreasingWith(comparator: Comparator<in T>) =201 this should beMonotonicallyDecreasingWith(comparator)202fun <T> Iterable<T>.shouldBeMonotonicallyDecreasingWith(comparator: Comparator<in T>) =203 toList().shouldBeMonotonicallyDecreasingWith(comparator)204fun <T> Array<T>.shouldBeMonotonicallyDecreasingWith(comparator: Comparator<in T>) =205 asList().shouldBeMonotonicallyDecreasingWith(comparator)206fun <T> List<T>.shouldNotBeMonotonicallyDecreasingWith(comparator: Comparator<in T>) =207 this shouldNot beMonotonicallyDecreasingWith(comparator)208fun <T> Iterable<T>.shouldNotBeMonotonicallyDecreasingWith(comparator: Comparator<in T>) =209 toList().shouldNotBeMonotonicallyDecreasingWith(comparator)210fun <T> Array<T>.shouldNotBeMonotonicallyDecreasingWith(comparator: Comparator<in T>) =211 asList().shouldNotBeMonotonicallyDecreasingWith(comparator)212fun <T : Comparable<T>> Iterable<T>.shouldBeStrictlyIncreasing() = toList().shouldBeStrictlyIncreasing()213fun <T : Comparable<T>> Array<T>.shouldBeStrictlyIncreasing() = asList().shouldBeStrictlyIncreasing()214fun <T : Comparable<T>> List<T>.shouldBeStrictlyIncreasing() = this should beStrictlyIncreasing<T>()215fun <T : Comparable<T>> Iterable<T>.shouldNotBeStrictlyIncreasing() = toList().shouldNotBeStrictlyIncreasing()216fun <T : Comparable<T>> Array<T>.shouldNotBeStrictlyIncreasing() = asList().shouldNotBeStrictlyIncreasing()217fun <T : Comparable<T>> List<T>.shouldNotBeStrictlyIncreasing() = this shouldNot beStrictlyIncreasing<T>()218fun <T> List<T>.shouldBeStrictlyIncreasingWith(comparator: Comparator<in T>) =219 this should beStrictlyIncreasingWith(comparator)220fun <T> Iterable<T>.shouldBeStrictlyIncreasingWith(comparator: Comparator<in T>) =221 toList().shouldBeStrictlyIncreasingWith(comparator)222fun <T> Array<T>.shouldBeStrictlyIncreasingWith(comparator: Comparator<in T>) =223 asList().shouldBeStrictlyIncreasingWith(comparator)224fun <T> List<T>.shouldNotBeStrictlyIncreasingWith(comparator: Comparator<in T>) =225 this shouldNot beStrictlyIncreasingWith(comparator)226fun <T> Iterable<T>.shouldNotBeStrictlyIncreasingWith(comparator: Comparator<in T>) =227 toList().shouldNotBeStrictlyIncreasingWith(comparator)228fun <T> Array<T>.shouldNotBeStrictlyIncreasingWith(comparator: Comparator<in T>) =229 asList().shouldNotBeStrictlyIncreasingWith(comparator)230fun <T : Comparable<T>> Iterable<T>.shouldBeStrictlyDecreasing() = toList().shouldBeStrictlyDecreasing()231fun <T : Comparable<T>> List<T>.shouldBeStrictlyDecreasing() = this should beStrictlyDecreasing<T>()232fun <T : Comparable<T>> Iterable<T>.shouldNotBeStrictlyDecreasing() = toList().shouldNotBeStrictlyDecreasing()233fun <T : Comparable<T>> List<T>.shouldNotBeStrictlyDecreasing() = this shouldNot beStrictlyDecreasing<T>()234fun <T> List<T>.shouldBeStrictlyDecreasingWith(comparator: Comparator<in T>) =235 this should beStrictlyDecreasingWith(comparator)236fun <T> Iterable<T>.shouldBeStrictlyDecreasingWith(comparator: Comparator<in T>) =237 toList().shouldBeStrictlyDecreasingWith(comparator)238fun <T> Array<T>.shouldBeStrictlyDecreasingWith(comparator: Comparator<in T>) =239 asList().shouldBeStrictlyDecreasingWith(comparator)240fun <T> List<T>.shouldNotBeStrictlyDecreasingWith(comparator: Comparator<in T>) =241 this shouldNot beStrictlyDecreasingWith(comparator)242fun <T> Iterable<T>.shouldNotBeStrictlyDecreasingWith(comparator: Comparator<in T>) =243 toList().shouldNotBeStrictlyDecreasingWith(comparator)244fun <T> Array<T>.shouldNotBeStrictlyDecreasingWith(comparator: Comparator<in T>) =245 asList().shouldNotBeStrictlyDecreasingWith(comparator)246infix fun <T> Iterable<T>.shouldHaveSingleElement(t: T) = toList().shouldHaveSingleElement(t)247infix fun <T> Array<T>.shouldHaveSingleElement(t: T) = asList().shouldHaveSingleElement(t)248infix fun <T> Iterable<T>.shouldHaveSingleElement(p: (T) -> Boolean) = toList().shouldHaveSingleElement(p)249infix fun <T> Array<T>.shouldHaveSingleElement(p: (T) -> Boolean) = asList().shouldHaveSingleElement(p)250infix fun <T> Collection<T>.shouldHaveSingleElement(t: T) = this should singleElement(t)251infix fun <T> Collection<T>.shouldHaveSingleElement(p: (T) -> Boolean) = this should singleElement(p)252infix fun <T> Iterable<T>.shouldNotHaveSingleElement(t: T) = toList().shouldNotHaveSingleElement(t)253infix fun <T> Array<T>.shouldNotHaveSingleElement(t: T) = asList().shouldNotHaveSingleElement(t)254infix fun <T> Collection<T>.shouldNotHaveSingleElement(t: T) = this shouldNot singleElement(t)255infix fun <T> Iterable<T>.shouldHaveSize(size: Int) = toList().shouldHaveSize(size)256infix fun <T> Array<T>.shouldHaveSize(size: Int) = asList().shouldHaveSize(size)257infix fun <T> Collection<T>.shouldHaveSize(size: Int) = this should haveSize(size = size)258infix fun <T> Iterable<T>.shouldNotHaveSize(size: Int) = toList().shouldNotHaveSize(size)259infix fun <T> Array<T>.shouldNotHaveSize(size: Int) = asList().shouldNotHaveSize(size)260infix fun <T> Collection<T>.shouldNotHaveSize(size: Int) = this shouldNot haveSize(size)261/**262 * Verifies this collection contains only one element263 *264 * This assertion is an alias to `collection shouldHaveSize 1`. This will pass if the collection have exactly one element265 * (definition of a Singleton Collection)266 *267 * ```268 * listOf(1).shouldBeSingleton() // Assertion passes269 * listOf(1, 2).shouldBeSingleton() // Assertion fails270 * ```271 *272 * @see [shouldHaveSize]273 * @see [shouldNotBeSingleton]274 * @see [shouldHaveSingleElement]275 */276fun <T> Collection<T>.shouldBeSingleton() = this shouldHaveSize 1277fun <T> Iterable<T>.shouldBeSingleton() = toList().shouldBeSingleton()278fun <T> Array<T>.shouldBeSingleton() = asList().shouldBeSingleton()279inline fun <T> Collection<T>.shouldBeSingleton(fn: (T) -> Unit) {280 this.shouldBeSingleton()281 fn(this.first())282}283inline fun <T> Iterable<T>.shouldBeSingleton(fn: (T) -> Unit) {284 toList().shouldBeSingleton(fn)285}286inline fun <T> Array<T>.shouldBeSingleton(fn: (T) -> Unit) {287 asList().shouldBeSingleton(fn)288}289/**290 * Verifies this collection doesn't contain only one element291 *292 * This assertion is an alias to `collection shouldNotHaveSize 1`. This will pass if the collection doesn't have exactly one element293 * (definition of a Singleton Collection)294 *295 * ```296 * listOf(1, 2).shouldNotBeSingleton() // Assertion passes297 * listOf<Int>().shouldNotBeSingleton() // Assertion passes298 * listOf(1).shouldNotBeSingleton() // Assertion fails299 * ```300 *301 * @see [shouldNotHaveSize]302 * @see [shouldBeSingleton]303 * @see [shouldNotHaveSingleElement]304 */305fun <T> Collection<T>.shouldNotBeSingleton() = this shouldNotHaveSize 1306fun <T> Iterable<T>.shouldNotBeSingleton() = toList().shouldNotBeSingleton()307fun <T> Array<T>.shouldNotBeSingleton() = asList().shouldNotBeSingleton()308infix fun <T, U> Iterable<T>.shouldBeLargerThan(other: Collection<U>) = toList().shouldBeLargerThan(other)309infix fun <T, U> Array<T>.shouldBeLargerThan(other: Collection<U>) = asList().shouldBeLargerThan(other)310infix fun <T, U> Iterable<T>.shouldBeLargerThan(other: Iterable<U>) = toList().shouldBeLargerThan(other.toList())311infix fun <T, U> Array<T>.shouldBeLargerThan(other: Array<U>) = asList().shouldBeLargerThan(other.asList())312infix fun <T, U> Collection<T>.shouldBeLargerThan(other: Collection<U>) = this should beLargerThan(other)313fun <T, U> beLargerThan(other: Collection<U>) = object : Matcher<Collection<T>> {314 override fun test(value: Collection<T>) = MatcherResult(315 value.size > other.size,316 "Collection of size ${value.size} should be larger than collection of size ${other.size}",317 "Collection of size ${value.size} should not be larger than collection of size ${other.size}"318 )319}320infix fun <T, U> Iterable<T>.shouldBeSmallerThan(other: Collection<U>) = toList().shouldBeSmallerThan(other)321infix fun <T, U> Array<T>.shouldBeSmallerThan(other: Collection<U>) = asList().shouldBeSmallerThan(other)322infix fun <T, U> Iterable<T>.shouldBeSmallerThan(other: Iterable<U>) = toList().shouldBeSmallerThan(other.toList())323infix fun <T, U> Array<T>.shouldBeSmallerThan(other: Array<U>) = asList().shouldBeSmallerThan(other.asList())324infix fun <T, U> Collection<T>.shouldBeSmallerThan(other: Collection<U>) = this should beSmallerThan(other)325fun <T, U> beSmallerThan(other: Collection<U>) = object : Matcher<Collection<T>> {326 override fun test(value: Collection<T>) = MatcherResult(327 value.size < other.size,328 "Collection of size ${value.size} should be smaller than collection of size ${other.size}",329 "Collection of size ${value.size} should not be smaller than collection of size ${other.size}"330 )331}332infix fun <T, U> Iterable<T>.shouldBeSameSizeAs(other: Collection<U>) = toList().shouldBeSameSizeAs(other)333infix fun <T, U> Array<T>.shouldBeSameSizeAs(other: Collection<U>) = asList().shouldBeSameSizeAs(other)334infix fun <T, U> Iterable<T>.shouldBeSameSizeAs(other: Iterable<U>) = toList().shouldBeSameSizeAs(other.toList())335infix fun <T, U> Array<T>.shouldBeSameSizeAs(other: Array<U>) = asList().shouldBeSameSizeAs(other.asList())336infix fun <T, U> Collection<T>.shouldBeSameSizeAs(other: Collection<U>) = this should beSameSizeAs(other)337fun <T, U> beSameSizeAs(other: Collection<U>) = object : Matcher<Collection<T>> {338 override fun test(value: Collection<T>) = MatcherResult(339 value.size == other.size,340 "Collection of size ${value.size} should be the same size as collection of size ${other.size}",341 "Collection of size ${value.size} should not be the same size as collection of size ${other.size}"342 )343}344infix fun <T> Iterable<T>.shouldHaveAtLeastSize(n: Int) = toList().shouldHaveAtLeastSize(n)345infix fun <T> Array<T>.shouldHaveAtLeastSize(n: Int) = asList().shouldHaveAtLeastSize(n)346infix fun <T> Collection<T>.shouldHaveAtLeastSize(n: Int) = this shouldHave atLeastSize(n)347fun <T> atLeastSize(n: Int) = object : Matcher<Collection<T>> {348 override fun test(value: Collection<T>) = MatcherResult(349 value.size >= n,350 "Collection should contain at least $n elements",351 "Collection should contain less than $n elements"352 )353}354infix fun <T> Iterable<T>.shouldHaveAtMostSize(n: Int) = toList().shouldHaveAtMostSize(n)355infix fun <T> Array<T>.shouldHaveAtMostSize(n: Int) = asList().shouldHaveAtMostSize(n)356infix fun <T> Collection<T>.shouldHaveAtMostSize(n: Int) = this shouldHave atMostSize(n)357fun <T> atMostSize(n: Int) = object : Matcher<Collection<T>> {358 override fun test(value: Collection<T>) = MatcherResult(359 value.size <= n,360 "Collection should contain at most $n elements",361 "Collection should contain more than $n elements"362 )363}364infix fun <T> Iterable<T>.shouldExist(p: (T) -> Boolean) = toList().shouldExist(p)365infix fun <T> Array<T>.shouldExist(p: (T) -> Boolean) = asList().shouldExist(p)366infix fun <T> Collection<T>.shouldExist(p: (T) -> Boolean) = this should exist(p)367fun <T> exist(p: (T) -> Boolean) = object : Matcher<Collection<T>> {368 override fun test(value: Collection<T>) = MatcherResult(369 value.any { p(it) },370 "Collection should contain an element that matches the predicate $p",371 "Collection should not contain an element that matches the predicate $p"372 )373}374fun <T> Iterable<T>.shouldExistInOrder(vararg ps: (T) -> Boolean) = toList().shouldExistInOrder(ps.toList())375fun <T> Array<T>.shouldExistInOrder(vararg ps: (T) -> Boolean) = asList().shouldExistInOrder(ps.toList())376fun <T> List<T>.shouldExistInOrder(vararg ps: (T) -> Boolean) = this.shouldExistInOrder(ps.toList())377infix fun <T> Iterable<T>.shouldExistInOrder(expected: List<(T) -> Boolean>) = toList().shouldExistInOrder(expected)378infix fun <T> Array<T>.shouldExistInOrder(expected: List<(T) -> Boolean>) = asList().shouldExistInOrder(expected)379infix fun <T> List<T>.shouldExistInOrder(expected: List<(T) -> Boolean>) = this should existInOrder(expected)380infix fun <T> Iterable<T>.shouldNotExistInOrder(expected: Iterable<(T) -> Boolean>) = toList().shouldNotExistInOrder(expected.toList())381infix fun <T> Array<T>.shouldNotExistInOrder(expected: Array<(T) -> Boolean>) = asList().shouldNotExistInOrder(expected.asList())382infix fun <T> Iterable<T>.shouldNotExistInOrder(expected: List<(T) -> Boolean>) = toList().shouldNotExistInOrder(expected)383infix fun <T> Array<T>.shouldNotExistInOrder(expected: List<(T) -> Boolean>) = asList().shouldNotExistInOrder(expected)384infix fun <T> List<T>.shouldNotExistInOrder(expected: List<(T) -> Boolean>) = this shouldNot existInOrder(expected)385fun <T> Iterable<T>.shouldBeEmpty() = toList().shouldBeEmpty()386fun <T> Array<T>.shouldBeEmpty() = asList().shouldBeEmpty()387fun <T> Collection<T>.shouldBeEmpty() = this should beEmpty()388fun <T> Iterable<T>.shouldNotBeEmpty() = toList().shouldNotBeEmpty()389fun <T> Array<T>.shouldNotBeEmpty() = asList().shouldNotBeEmpty()390fun <T> Collection<T>.shouldNotBeEmpty() = this shouldNot beEmpty()391fun <T> Iterable<T>.shouldContainAnyOf(vararg ts: T) = toList().shouldContainAnyOf(ts)392fun <T> Array<T>.shouldContainAnyOf(vararg ts: T) = asList().shouldContainAnyOf(ts)393fun <T> Collection<T>.shouldContainAnyOf(vararg ts: T) = this should containAnyOf(ts.asList())394fun <T> Iterable<T>.shouldNotContainAnyOf(vararg ts: T) = toList().shouldNotContainAnyOf(ts)395fun <T> Array<T>.shouldNotContainAnyOf(vararg ts: T) = asList().shouldNotContainAnyOf(ts)396fun <T> Collection<T>.shouldNotContainAnyOf(vararg ts: T) = this shouldNot containAnyOf(ts.asList())397infix fun <T> Iterable<T>.shouldContainAnyOf(ts: Collection<T>) = toList().shouldContainAnyOf(ts)398infix fun <T> Array<T>.shouldContainAnyOf(ts: Collection<T>) = asList().shouldContainAnyOf(ts)399infix fun <T> Collection<T>.shouldContainAnyOf(ts: Collection<T>) = this should containAnyOf(ts)400infix fun <T> Iterable<T>.shouldNotContainAnyOf(ts: Collection<T>) = toList().shouldNotContainAnyOf(ts)401infix fun <T> Array<T>.shouldNotContainAnyOf(ts: Collection<T>) = asList().shouldNotContainAnyOf(ts)402infix fun <T> Collection<T>.shouldNotContainAnyOf(ts: Collection<T>) = this shouldNot containAnyOf(ts)403fun <T> containAnyOf(ts: Collection<T>) = object : Matcher<Collection<T>> {404 override fun test(value: Collection<T>): MatcherResult {405 if (ts.isEmpty()) throwEmptyCollectionError()406 return MatcherResult(407 ts.any { it in value },408 { "Collection should contain any of ${ts.joinToString(separator = ", ", limit = 10) { it.show().value }}" },409 { "Collection should not contain any of ${ts.joinToString(separator = ", ", limit = 10) { it.show().value }}" }410 )411 }412}413/**414 * Verifies that this instance is in [collection]415 *416 * Assertion to check that this instance is in [collection]. This assertion checks by reference, and not by value,417 * therefore the exact instance must be in [collection], or this will fail.418 *419 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]420 *421 * @see [shouldNotBeOneOf]422 * @see [beOneOf]423 */424infix fun <T> T.shouldBeOneOf(collection: Collection<T>) = this should beOneOf(collection)425/**426 * Verifies that this instance is NOT in [collection]427 *428 * Assertion to check that this instance is not in [collection]. This assertion checks by reference, and not by value,429 * therefore the exact instance must not be in [collection], or this will fail.430 *431 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]432 *433 * @see [shouldBeOneOf]434 * @see [beOneOf]435 */436infix fun <T> T.shouldNotBeOneOf(collection: Collection<T>) = this shouldNot beOneOf(collection)437/**438 * Verifies that this instance is any of [any]439 *440 * Assertion to check that this instance is any of [any]. This assertion checks by reference, and not by value,441 * therefore the exact instance must be in [any], or this will fail.442 *443 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]444 *445 * @see [shouldNotBeOneOf]446 * @see [beOneOf]447 */448fun <T> T.shouldBeOneOf(vararg any: T) = this should beOneOf(any.toList())449/**450 * Verifies that this instance is NOT any of [any]451 *452 * Assertion to check that this instance is not any of [any]. This assertion checks by reference, and not by value,453 * therefore the exact instance must not be in [any], or this will fail.454 *455 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]456 *457 * @see [shouldNotBeOneOf]458 * @see [beOneOf]459 */460fun <T> T.shouldNotBeOneOf(vararg any: T) = this shouldNot beOneOf(any.toList())461/**462 * Matcher that verifies that this instance is in [collection]463 *464 * Assertion to check that this instance is in [collection]. This matcher checks by reference, and not by value,465 * therefore the exact instance must be in [collection], or this will fail.466 *467 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]468 *469 * @see [shouldBeOneOf]470 * @see [shouldNotBeOneOf]471 */472fun <T> beOneOf(collection: Collection<T>) = object : Matcher<T> {473 override fun test(value: T): MatcherResult {474 if (collection.isEmpty()) throwEmptyCollectionError()475 val match = collection.any { it === value }476 return MatcherResult(477 match,478 "Collection should contain the instance of value, but doesn't.",479 "Collection should not contain the instance of value, but does."480 )481 }482}483/**484 * Verifies that this element is in [collection] by comparing value485 *486 * Assertion to check that this element is in [collection]. This assertion checks by value, and not by reference,487 * therefore even if the exact instance is not in [collection] but another instance with same value is present, the488 * test will pass.489 *490 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]491 *492 * @see [shouldNotBeIn]493 * @see [beIn]494 */495infix fun <T> T.shouldBeIn(collection: Collection<T>) = this should beIn(collection)496/**497 * Verifies that this element is NOT any of [collection]498 *499 * Assertion to check that this element is not any of [collection]. This assertion checks by value, and not by reference,500 * therefore any instance with same value must not be in [collection], or this will fail.501 *502 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]503 *504 * @see [shouldNotBeIn]505 * @see [beIn]506 */507infix fun <T> T.shouldNotBeIn(collection: Collection<T>) = this shouldNot beIn(collection.toList())508/**509 * Verifies that this element is any of [any] by comparing value510 *511 * Assertion to check that this element is any of [any]. This assertion checks by value, and not by reference,512 * therefore even if the exact instance is not any of [any] but another instance with same value is present, the513 * test will pass.514 *515 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]516 *517 * @see [shouldNotBeIn]518 * @see [beIn]519 */520fun <T> T.shouldBeIn(vararg any: T) = this should beIn(any.toList())521/**522 * Verifies that this element is NOT any of [any]523 *524 * Assertion to check that this element is not any of [any]. This assertion checks by value, and not by reference,525 * therefore any instance with same value must not be in [any], or this will fail.526 *527 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]528 *529 * @see [shouldNotBeIn]530 * @see [beIn]531 */532fun <T> T.shouldNotBeIn(vararg any: T) = this shouldNot beIn(any.toList())533/**534 * Verifies that this element is in [array] by comparing value535 *536 * Assertion to check that this element is in [array]. This assertion checks by value, and not by reference,537 * therefore even if the exact instance is not in [array] but another instance with same value is present, the538 * test will pass.539 *540 * An empty array will always fail. If you need to check for empty array, use [Array.shouldBeEmpty]541 *542 * @see [shouldNotBeIn]543 * @see [beIn]544 */545@JvmName("shouldBeInArray")546infix fun <T> T.shouldBeIn(array: Array<T>) = this should beIn(array.toList())547/**548 * Verifies that this element is NOT any of [array]549 *550 * Assertion to check that this element is not any of [array]. This assertion checks by value, and not by reference,551 * therefore any instance with same value must not be in [array], or this will fail.552 *553 * An empty array will always fail. If you need to check for empty array, use [Array.shouldBeEmpty]554 *555 * @see [shouldNotBeIn]556 * @see [beIn]557 */558@JvmName("shouldNotBeInArray")559infix fun <T> T.shouldNotBeIn(array: Array<T>) = this shouldNot beIn(array.toList())560/**561 * Matcher that verifies that this element is in [collection] by comparing value562 *563 * Assertion to check that this element is in [collection]. This assertion checks by value, and not by reference,564 * therefore even if the exact instance is not in [collection] but another instance with same value is present, the565 * test will pass.566 *567 * An empty collection will always fail. If you need to check for empty collection, use [Collection.shouldBeEmpty]568 *569 * @see [shouldBeOneOf]570 * @see [shouldNotBeOneOf]571 */572fun <T> beIn(collection: Collection<T>) = object : Matcher<T> {573 override fun test(value: T): MatcherResult {574 if (collection.isEmpty()) throwEmptyCollectionError()575 val match = value in collection576 return MatcherResult(577 match,578 "Collection should contain ${value.show().value}, but doesn't. Possible values: ${collection.show().value}",579 "Collection should not contain ${value.show().value}, but does. Forbidden values: ${collection.show().value}"580 )581 }582}583private fun throwEmptyCollectionError(): Nothing {584 throw AssertionError("Asserting content on empty collection. Use Collection.shouldBeEmpty() instead.")585}...

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decreasing.kt

Source:decreasing.kt Github

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1package io.kotest.matchers.collections2import io.kotest.assertions.print.print3import io.kotest.matchers.Matcher4import io.kotest.matchers.MatcherResult5import io.kotest.matchers.should6import io.kotest.matchers.shouldNot7fun <T : Comparable<T>> Iterable<T>.shouldBeMonotonicallyDecreasing(): Iterable<T> {8 toList().shouldBeMonotonicallyDecreasing()9 return this10}11fun <T : Comparable<T>> Array<T>.shouldBeMonotonicallyDecreasing(): Array<T> {12 asList().shouldBeMonotonicallyDecreasing()13 return this14}15fun <T : Comparable<T>> List<T>.shouldBeMonotonicallyDecreasing(): List<T> {16 this should beMonotonicallyDecreasing()17 return this18}19fun <T : Comparable<T>> Iterable<T>.shouldNotBeMonotonicallyDecreasing(): Iterable<T> {20 toList().shouldNotBeMonotonicallyDecreasing()21 return this22}23fun <T : Comparable<T>> Array<T>.shouldNotBeMonotonicallyDecreasing(): Array<T> {24 asList().shouldNotBeMonotonicallyDecreasing()25 return this26}27fun <T : Comparable<T>> List<T>.shouldNotBeMonotonicallyDecreasing(): List<T> {28 this shouldNot beMonotonicallyDecreasing<T>()29 return this30}31fun <T> List<T>.shouldBeMonotonicallyDecreasingWith(comparator: Comparator<in T>): List<T> {32 this should beMonotonicallyDecreasingWith(comparator)33 return this34}35fun <T> Iterable<T>.shouldBeMonotonicallyDecreasingWith(comparator: Comparator<in T>): Iterable<T> {36 toList().shouldBeMonotonicallyDecreasingWith(comparator)37 return this38}39fun <T> Array<T>.shouldBeMonotonicallyDecreasingWith(comparator: Comparator<in T>): Array<T> {40 asList().shouldBeMonotonicallyDecreasingWith(comparator)41 return this42}43fun <T> List<T>.shouldNotBeMonotonicallyDecreasingWith(comparator: Comparator<in T>): List<T> {44 this shouldNot beMonotonicallyDecreasingWith(comparator)45 return this46}47fun <T> Iterable<T>.shouldNotBeMonotonicallyDecreasingWith(comparator: Comparator<in T>): Iterable<T> {48 toList().shouldNotBeMonotonicallyDecreasingWith(comparator)49 return this50}51fun <T> Array<T>.shouldNotBeMonotonicallyDecreasingWith(comparator: Comparator<in T>): Array<T> {52 asList().shouldNotBeMonotonicallyDecreasingWith(comparator)53 return this54}55fun <T : Comparable<T>> Iterable<T>.shouldBeStrictlyDecreasing() = toList().shouldBeStrictlyDecreasing()56fun <T : Comparable<T>> List<T>.shouldBeStrictlyDecreasing() = this should beStrictlyDecreasing<T>()57fun <T : Comparable<T>> Iterable<T>.shouldNotBeStrictlyDecreasing() = toList().shouldNotBeStrictlyDecreasing()58fun <T : Comparable<T>> List<T>.shouldNotBeStrictlyDecreasing() = this shouldNot beStrictlyDecreasing<T>()59fun <T> List<T>.shouldBeStrictlyDecreasingWith(comparator: Comparator<in T>) =60 this should beStrictlyDecreasingWith(comparator)61fun <T> Iterable<T>.shouldBeStrictlyDecreasingWith(comparator: Comparator<in T>) =62 toList().shouldBeStrictlyDecreasingWith(comparator)63fun <T> Array<T>.shouldBeStrictlyDecreasingWith(comparator: Comparator<in T>): Array<T> {64 asList().shouldBeStrictlyDecreasingWith(comparator)65 return this66}67fun <T> List<T>.shouldNotBeStrictlyDecreasingWith(comparator: Comparator<in T>) =68 this shouldNot beStrictlyDecreasingWith(comparator)69fun <T> Iterable<T>.shouldNotBeStrictlyDecreasingWith(comparator: Comparator<in T>) =70 toList().shouldNotBeStrictlyDecreasingWith(comparator)71fun <T> Array<T>.shouldNotBeStrictlyDecreasingWith(comparator: Comparator<in T>) =72 asList().shouldNotBeStrictlyDecreasingWith(comparator)73fun <T : Comparable<T>> beMonotonicallyDecreasing(): Matcher<List<T>> = monotonicallyDecreasing()74fun <T : Comparable<T>> monotonicallyDecreasing(): Matcher<List<T>> = object : Matcher<List<T>> {75 override fun test(value: List<T>): MatcherResult {76 return testMonotonicallyDecreasingWith(value) { a, b -> a.compareTo(b) }77 }78}79fun <T> beMonotonicallyDecreasingWith(comparator: Comparator<in T>): Matcher<List<T>> =80 monotonicallyDecreasingWith(comparator)81fun <T> monotonicallyDecreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = object : Matcher<List<T>> {82 override fun test(value: List<T>): MatcherResult {83 return testMonotonicallyDecreasingWith(value, comparator)84 }85}86private fun <T> testMonotonicallyDecreasingWith(value: List<T>, comparator: Comparator<in T>): MatcherResult {87 val failure = value.zipWithNext().withIndex().find { (_, pair) -> comparator.compare(pair.first, pair.second) < 0 }88 val snippet = value.print().value89 val elementMessage = when (failure) {90 null -> ""91 else -> ". Element ${failure.value.second} at index ${failure.index + 1} was not monotonically decreased from previous element."92 }93 return MatcherResult(94 failure == null,95 { "List [$snippet] should be monotonically decreasing$elementMessage" },96 { "List [$snippet] should not be monotonically decreasing" }97 )98}99fun <T : Comparable<T>> beStrictlyDecreasing(): Matcher<List<T>> = strictlyDecreasing()100fun <T : Comparable<T>> strictlyDecreasing(): Matcher<List<T>> = object : Matcher<List<T>> {101 override fun test(value: List<T>): MatcherResult {102 return testStrictlyDecreasingWith(value) { a, b -> a.compareTo(b) }103 }104}105fun <T> beStrictlyDecreasingWith(comparator: Comparator<in T>): Matcher<List<T>> =106 strictlyDecreasingWith(comparator)107fun <T> strictlyDecreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = object : Matcher<List<T>> {108 override fun test(value: List<T>): MatcherResult {109 return testStrictlyDecreasingWith(value, comparator)110 }111}112private fun <T> testStrictlyDecreasingWith(value: List<T>, comparator: Comparator<in T>): MatcherResult {113 val failure = value.zipWithNext().withIndex().find { (_, pair) -> comparator.compare(pair.first, pair.second) <= 0 }114 val snippet = value.print().value115 val elementMessage = when (failure) {116 null -> ""117 else -> ". Element ${failure.value.second} at index ${failure.index + 1} was not strictly decreased from previous element."118 }119 return MatcherResult(120 failure == null,121 { "List [$snippet] should be strictly decreasing$elementMessage" },122 { "List [$snippet] should not be strictly decreasing" }123 )124}...

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Iterable.shouldBeStrictlyDecreasingWith

Using AI Code Generation

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1import io.kotest.matchers.collections.decreasing2import io.kotest.matchers.shouldBe3import io.kotest.matchers.shouldNotBe4fun main() {5 listOf(3, 2, 1) shouldBe decreasing()6 listOf(3, 2, 1) shouldNotBe decreasing()7 listOf(3, 2, 1) shouldBe decreasing { it % 2 }8 listOf(3, 2, 1) shouldNotBe decreasing { it % 2 }9}10import io.kotest.matchers.collections.increasing11import io.kotest.matchers.shouldBe12import io.kotest.matchers.shouldNotBe13fun main() {14 listOf(1, 2, 3) shouldBe increasing()15 listOf(1, 2, 3) shouldNotBe increasing()16 listOf(1, 2, 3) shouldBe increasing { it % 2 }17 listOf(1, 2, 3) shouldNotBe increasing { it % 2 }18}19import io.kotest.matchers.collections.sorted20import io.kotest.matchers.shouldBe21fun main() {22 listOf(1, 2, 3) shouldBe sorted()23 listOf(1, 2, 3) shouldBe sorted { it % 2 }24}25import io.kotest.matchers.collections.sortedBy26import io.kotest.matchers.shouldBe27fun main() {28 listOf(1, 2, 3) shouldBe sortedBy { it % 2 }29}

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