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

...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)...

CollectionMatchers.kt

Source:CollectionMatchers.kt

...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" },...

increasing.kt

Source:increasing.kt

...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" },...

strictlyIncreasingWith

Using AI Code Generation

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})

strictlyIncreasingWith

Using AI Code Generation

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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