How to use strictlyIncreasingWith method of io.kotest.matchers.collections.increasing class

Best Kotest code snippet using io.kotest.matchers.collections.increasing.strictlyIncreasingWith

CollectionMatchersTest.kt

Source:CollectionMatchersTest.kt Github

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...82import io.kotest.matchers.collections.sorted83import io.kotest.matchers.collections.strictlyDecreasing84import io.kotest.matchers.collections.strictlyDecreasingWith85import io.kotest.matchers.collections.strictlyIncreasing86import io.kotest.matchers.collections.strictlyIncreasingWith87import io.kotest.matchers.ints.shouldBeGreaterThan88import io.kotest.matchers.ints.shouldBeInRange89import io.kotest.matchers.should90import io.kotest.matchers.shouldBe91import io.kotest.matchers.shouldHave92import io.kotest.matchers.shouldNot93import io.kotest.matchers.shouldNotBe94import io.kotest.matchers.shouldNotHave95import io.kotest.matchers.throwable.shouldHaveMessage96class CollectionMatchersTest : WordSpec() {97 private val countdown = (10 downTo 0).toList()98 private val asc = { a: Int, b: Int -> a - b }99 private val desc = { a: Int, b: Int -> b - a }100 init {101 "a descending non-empty list" should {102 "fail to ascend" {103 shouldFail {104 countdown.shouldBeSortedWith(asc)105 }106 }107 "descend" {108 countdown.shouldBeSortedWith(desc)109 }110 "not ascend" {111 countdown.shouldNotBeSortedWith(asc)112 }113 "fail not to descend" {114 shouldFail {115 countdown.shouldNotBeSortedWith(desc)116 }117 }118 }119 "sortedWith" should {120 val items = listOf(121 1 to "I",122 2 to "II",123 4 to "IV",124 5 to "V",125 6 to "VI",126 9 to "IX",127 10 to "X"128 )129 "work on non-Comparable given a Comparator" {130 items.shouldBeSortedWith(Comparator { a, b -> asc(a.first, b.first) })131 }132 "work on non-Comparable given a compare function" {133 items.shouldBeSortedWith { a, b -> asc(a.first, b.first) }134 }135 }136 "haveElementAt" should {137 "test that a collection contains the specified element at the given index" {138 listOf("a", "b", "c") should haveElementAt(1, "b")139 listOf("a", "b", "c") shouldNot haveElementAt(1, "c")140 listOf("a", "b", null) should haveElementAt(2, null)141 listOf("a", "b", null) shouldNot haveElementAt(3, null)142 listOf("a", "b", "c").shouldHaveElementAt(1, "b")143 listOf("a", "b", "c").shouldNotHaveElementAt(1, "c")144 listOf("a", "b", null).shouldHaveElementAt(2, null)145 }146 "support type inference for subtypes of collection" {147 val tests = listOf(148 TestSealed.Test1("test1"),149 TestSealed.Test2(2)150 )151 tests should haveElementAt(0, TestSealed.Test1("test1"))152 tests.shouldHaveElementAt(1, TestSealed.Test2(2))153 }154 }155 "containNull()" should {156 "test that a collection contains at least one null" {157 listOf(1, 2, null) should containNull()158 listOf(null) should containNull()159 listOf(1, 2) shouldNot containNull()160 listOf(1, 2, null).shouldContainNull()161 listOf(null).shouldContainNull()162 listOf(1, 2).shouldNotContainNull()163 }164 }165 "sorted" should {166 "test that a collection is sorted" {167 emptyList<Int>() shouldBe sorted<Int>()168 listOf(1) shouldBe sorted<Int>()169 listOf(1, 2, 3, 4) shouldBe sorted<Int>()170 shouldThrow<AssertionError> {171 listOf(2, 1) shouldBe sorted<Int>()172 }.shouldHaveMessage("List [2, 1] should be sorted. Element 2 at index 0 was greater than element 1")173 listOf(1, 2, 6, 9).shouldBeSorted()174 shouldThrow<AssertionError> {175 listOf(2, 1).shouldBeSorted()176 }.shouldHaveMessage("List [2, 1] should be sorted. Element 2 at index 0 was greater than element 1")177 shouldThrow<AssertionError> {178 listOf(1, 2, 3).shouldNotBeSorted()179 }.shouldHaveMessage("List [1, 2, 3] should not be sorted")180 }181 "restrict items at the error message" {182 val longList = (1..1000).toList()183 shouldThrow<AssertionError> {184 longList.shouldNotBeSorted()185 }.shouldHaveMessage("List [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, ...and 980 more (set the 'kotest.assertions.collection.print.size' JVM property to see more / less items)] should not be sorted")186 }187 }188 "sortedBy" should {189 val items = listOf(190 1 to "I",191 2 to "II",192 4 to "IV",193 5 to "V",194 6 to "VI",195 9 to "IX",196 10 to "X"197 )198 "compare by the tranformed value" {199 items.shouldBeSortedBy { it.first }200 items.shouldNotBeSortedBy { it.second }201 }202 }203 "shouldBeIncreasing" should {204 "test that a collection is monotonically increasing" {205 listOf(1, 2, 2, 3) shouldBe monotonicallyIncreasing<Int>()206 listOf(6, 5) shouldNotBe monotonicallyIncreasing<Int>()207 listOf(1, 2, 2, 3).shouldBeMonotonicallyIncreasing()208 listOf(6, 5).shouldNotBeMonotonicallyIncreasing()209 }210 "test that a collection is monotonically increasing according to comparator" {211 val comparator = Comparator(desc)212 listOf(3, 2, 2, 1) shouldBe monotonicallyIncreasingWith(comparator)213 listOf(5, 6) shouldNotBe monotonicallyIncreasingWith(comparator)214 listOf(3, 2, 2, 1).shouldBeMonotonicallyIncreasingWith(comparator)215 listOf(5, 6).shouldNotBeMonotonicallyIncreasingWith(comparator)216 }217 "test that a collection is strictly increasing" {218 listOf(1, 2, 3) shouldBe strictlyIncreasing<Int>()219 listOf(1, 2, 2, 3) shouldNotBe strictlyIncreasing<Int>()220 listOf(6, 5) shouldNotBe strictlyIncreasing<Int>()221 listOf(1, 2, 3).shouldBeStrictlyIncreasing()222 listOf(1, 2, 2, 3).shouldNotBeStrictlyIncreasing()223 listOf(6, 5).shouldNotBeStrictlyIncreasing()224 }225 "test that a collection is strictly increasing according to comparator" {226 val comparator = Comparator(desc)227 listOf(3, 2, 1) shouldBe strictlyIncreasingWith(comparator)228 listOf(3, 2, 2, 1) shouldNotBe strictlyIncreasingWith(comparator)229 listOf(5, 6) shouldNotBe strictlyIncreasingWith(comparator)230 listOf(3, 2, 1).shouldBeStrictlyIncreasingWith(comparator)231 listOf(3, 2, 2, 1).shouldNotBeStrictlyIncreasingWith(comparator)232 listOf(5, 6).shouldNotBeStrictlyIncreasingWith(comparator)233 }234 }235 "shouldBeDecreasing" should {236 "test that a collection is monotonically decreasing" {237 listOf(3, 2, 2, -4) shouldBe monotonicallyDecreasing<Int>()238 listOf(5, 6) shouldNotBe monotonicallyDecreasing<Int>()239 listOf(3, 2, 2, -4).shouldBeMonotonicallyDecreasing()240 listOf(5, 6).shouldNotBeMonotonicallyDecreasing()241 }242 "test that a collection is monotonically decreasing according to comparator" {243 val comparator = Comparator(desc)...

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CollectionMatchers.kt

Source:CollectionMatchers.kt Github

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...128 override fun test(value: List<T>): MatcherResult {129 return testStrictlyIncreasingWith(value, Comparator { a, b -> a.compareTo(b) })130 }131}132fun <T> beStrictlyIncreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = strictlyIncreasingWith(133 comparator)134fun <T> strictlyIncreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = object : Matcher<List<T>> {135 override fun test(value: List<T>): MatcherResult {136 return testStrictlyIncreasingWith(value, comparator)137 }138}139private fun <T> testStrictlyIncreasingWith(value: List<T>, comparator: Comparator<in T>): MatcherResult {140 val failure = value.zipWithNext().withIndex().find { (_, pair) -> comparator.compare(pair.first, pair.second) >= 0 }141 val snippet = value.show().value142 val elementMessage = when (failure) {143 null -> ""144 else -> ". Element ${failure.value.second} at index ${failure.index + 1} was not strictly increased from previous element."145 }146 return MatcherResult(147 failure == null,148 { "List [$snippet] should be strictly increasing$elementMessage" },...

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increasing.kt

Source:increasing.kt Github

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...93 override fun test(value: List<T>): MatcherResult {94 return testStrictlyIncreasingWith(value) { a, b -> a.compareTo(b) }95 }96}97fun <T> beStrictlyIncreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = strictlyIncreasingWith(comparator)98fun <T> strictlyIncreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = object : Matcher<List<T>> {99 override fun test(value: List<T>): MatcherResult {100 return testStrictlyIncreasingWith(value, comparator)101 }102}103private fun <T> testStrictlyIncreasingWith(value: List<T>, comparator: Comparator<in T>): MatcherResult {104 val failure = value.zipWithNext().withIndex().find { (_, pair) -> comparator.compare(pair.first, pair.second) >= 0 }105 val snippet = value.print().value106 val elementMessage = when (failure) {107 null -> ""108 else -> ". Element ${failure.value.second} at index ${failure.index + 1} was not strictly increased from previous element."109 }110 return MatcherResult(111 failure == null,112 { "List [$snippet] should be strictly increasing$elementMessage" },...

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strictlyIncreasingWith

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1 context("strictly increasing") {2 test("should pass for strictly increasing lists") {3 listOf(1, 2, 3).strictlyIncreasingWith { a, b -> a < b } shouldBe true4 }5 test("should fail for non strictly increasing lists") {6 listOf(1, 2, 2).strictlyIncreasingWith { a, b -> a < b } shouldBe false7 }8 }9})

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strictlyIncreasingWith

Using AI Code Generation

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1 context("strictly increasing with") {2 test("should test for strictly increasing with") {3 listOf(1, 2, 3, 4, 5).strictlyIncreasingWith { a, b -> a < b } shouldBe true4 listOf(1, 2, 3, 3, 5).strictlyIncreasingWith { a, b -> a < b } shouldBe false5 listOf(1, 2, 3, 4, 5).strictlyIncreasingWith { a, b -> a <= b } shouldBe false6 listOf(1, 2, 3, 3, 5).strictlyIncreasingWith { a, b -> a <= b } shouldBe false7 }8 }9})10 context("strictly decreasing with") {11 test("should test for strictly decreasing with") {12 listOf(5, 4, 3, 2, 1).strictlyDecreasingWith { a, b -> a < b } shouldBe true13 listOf(5, 4, 3, 3, 1).strictlyDecreasingWith { a, b -> a < b } shouldBe false14 listOf(5, 4, 3, 2, 1).strictlyDecreasingWith { a, b -> a <= b } shouldBe false15 listOf(5, 4, 3, 3, 1).strictlyDecreasingWith { a, b -> a <= b } shouldBe false16 }17 }18})19 context("strictly increasing with") {20 test("should test for strictly increasing with") {21 listOf("a", "b", "c", "d", "e").strictlyIncreasingWith { a, b -> a < b } shouldBe true22 listOf("a", "b", "c", "c", "e").strictlyIncreasingWith { a, b -> a < b } shouldBe false23 listOf("a", "b", "c", "d", "e").strictlyIncreasingWith { a

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