How to use shrink method of io.kotest.property.arbitrary.doubles class

Best Kotest code snippet using io.kotest.property.arbitrary.doubles.shrink

BindTest.kt

Source:BindTest.kt

...564         "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",565         "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"566      )567   }568   "!Arb.bind shrinks" {569      data class Person(val name: String, val age: Int)570      val arb = Arb.bind<Person>()571      val stdout = captureStandardOut {572         shouldThrowAny {573            checkAll(arb) { person ->574               person.name.length shouldBeLessThan 10575               person.age shouldBeGreaterThan -1576               person.age shouldBeLessThan 130577            }578         }579      }580      stdout shouldContain "Shrink result"581      stdout shouldContain "Person(name=, age=-1)"582   }...

Arb.kt

Source:Arb.kt

...41}42@PublishedApi43internal fun <A, B> arrayChunkGenerator(44  arb: Arb<A>,45  shrinker: Shrinker<B>,46  range: IntRange = 0..10,47  build: (values: List<A>, offset: Int, length: Int) -> B48): Arb<B> {49  check(!range.isEmpty())50  check(range.first >= 0)51  val edgecases =52    arb.edgecases().map { a -> build(listOf(a), 0, 1) } + build(emptyList(), 0, 0)53  return arb(edgecases, shrinker) {54    val genIter = arb.generate(it).iterator()55    sequence {56      while (true) {57        val targetSize = it.random.nextInt(range)58        val list = ArrayList<A>(targetSize)59        while (list.size < targetSize && genIter.hasNext()) {60          list.add(genIter.next().value)61        }62        val offset = (0..list.size).random(it.random)63        val length = (0..(list.size - offset)).random(it.random)64        yield(build(list, offset, length))65      }66    }67  }68}69class ChunkShrinker<A> : Shrinker<Chunk<A>> {70  override fun shrink(value: Chunk<A>): List<Chunk<A>> =71    if (value.isEmpty()) emptyList()72    else listOf(73      Chunk.empty(),74      value.takeLast(1),75      value.take(value.size() / 3),76      value.take(value.size() / 2),77      value.take(value.size() * 2 / 3),78      value.dropLast(1)79    )80}81inline fun <reified A> Arb.Companion.chunk(arb: Arb<A>): Arb<Chunk<A>> =82  object : Arb<Chunk<A>>() {83    override fun edgecases(): List<Chunk<A>> =84      listOf(Chunk.empty<A>()) + arb.edgecases().map { Chunk(it) }...

doubles.kt

Source:doubles.kt

...6private val numericEdgeCases = listOf(-1.0, -Double.MIN_VALUE, -0.0, 0.0, Double.MIN_VALUE, 1.0)7private val nonFiniteEdgeCases = listOf(Double.NEGATIVE_INFINITY, Double.NaN, Double.POSITIVE_INFINITY)8object DoubleShrinker : Shrinker<Double> {9   private val pattern = Regex("""([+-]|)([0-9]*)(\.[0-9]*|)(e[+-]?[0-9]+|)""", RegexOption.IGNORE_CASE)10   override fun shrink(value: Double): List<Double> =11      if (value == 0.0 || !value.isFinite() || value.absoluteValue < 10 * Double.MIN_VALUE)12         emptyList()13      else14         listOfNotNull(shrink(value.toString())?.toDouble())15   fun shrink(value: String): String? {16      val matches = pattern.matchEntire(value) ?: return null17      val parts = matches.groupValues.drop(1)18      val (signPart, intPart, fracPart_, expPart) = parts19      val fracPart = fracPart_.trimEnd { it == '0' }20      val numberPart = if (fracPart.isNotEmpty() && fracPart.last().isDigit()) {21         "$intPart${fracPart.dropLast(1)}"22      } else {23         val length = intPart.length24         val index = intPart.indexOfLast { it != '0' }.let { if (it == -1) length else it }25         if (index == 0) {26            return null27         }28         val head = intPart.take(index)29         val tail = intPart.takeLast(length - index - 1)...

Generators.kt

Source:Generators.kt

...47        }48    }49}50object TreeShrinker : Shrinker<Quadtree> {51    override fun shrink(value: Quadtree): List<Quadtree> = when (value) {52        is Leaf -> listOf()53        is Node -> value.children.asList()54    }55}56fun GLFWAction.Companion.gen(): Gen<GLFWAction> = exhaustive(GLFWAction.values().asList())57fun CursorEvent.Companion.arb(): Arb<CursorEvent> = Arb.bind(58    Arb.positiveDoubles(), Arb.positiveDoubles(),59) { x, y -> CursorEvent(Vec2.screen(x, y)) }60fun KeyEvent.Companion.arb(): Arb<KeyEvent> = Arb.bind(61    Arb.int(0..1000), GLFWAction.gen()62) { key, action -> KeyEvent(key, GLFW.glfwGetKeyScancode(key), action, 0) }63fun MouseEvent.Companion.arb(): Arb<MouseEvent> = Arb.bind(64    Arb.int(0..5), GLFWAction.gen(),65) { button, action -> MouseEvent(button, action, 0) }...

OrNullTest.kt

Source:OrNullTest.kt

...53            .all { it == null }54         allNull shouldBe isNextNull55      }56   }57   test("orNull has a shrink to null"){58      val iterations = 100059      val rs = RandomSource.default()60      val classifications =61         forAll(iterations, Arb.constant(Arb.int().orNull())) { orNullArb ->62            val sample = orNullArb.sample(rs)63            val hasNullShrink = sample.shrinks.children.value.map{it.value()}.any{it == null}64            classify(hasNullShrink, "nullShrink", "noNullShrink")65            true66         }.classifications()67      classifications["nullShrink"]?.shouldBeBetween(800, 1000)68      classifications["noNullShrink"]?.shouldBeBetween(0, 200)69   }70})...

shrink

Using AI Code Generation

1    val shrinker = io.kotest.property.arbitrary.doubles().shrinker()2    val shrinker = io.kotest.property.arbitrary.ints().shrinker()3    val shrinker = io.kotest.property.arbitrary.longs().shrinker()4    val shrinker = io.kotest.property.arbitrary.strings().shrinker()5    val shrinker = io.kotest.property.arbitrary.uuids().shrinker()6    val shrinker = io.kotest.property.arbitrary.floats().shrinker()7    val shrinker = io.kotest.property.arbitrary.bigDecimals().shrinker()8    val shrinker = io.kotest.property.arbitrary.bigIntegers().shrinker()9    val shrinker = io.kotest.property.arbitrary.chars().shrinker()10    val shrinker = io.kotest.property.arbitrary.booleans().shrinker()11    val shrinker = io.kotest.property.arbitrary.byteArrays().shrinker()12    val shrinker = io.kotest.property.arbitrary.bytes().shrinker()13    val shrinker = io.kotest.property.arbitrary.chars().shrinker()

shrink

Using AI Code Generation

1val shrinker = doubles(0.0, 100.0).shrinker()2shrinker.shrink(50.0).forEach { println(it) }3val shrinker = doubles(0.0, 100.0).shrinker()4shrinker.shrink(50.0).forEach { println(it) }5val shrinker = doubles(0.0, 100.0).shrinker()6shrinker.shrink(50.0).forEach { println(it) }7val shrinker = doubles(0.0, 100.0).shrinker()8shrinker.shrink(50.0).forEach { println(it) }9val shrinker = doubles(0.0, 100.0).shrinker()10shrinker.shrink(50.0).forEach { println(it) }11val shrinker = doubles(0.0, 100.0).shrinker()12shrinker.shrink(50.0).forEach { println(it) }13val shrinker = doubles(0.0, 100.0).shrinker()14shrinker.shrink(50.0).forEach { println(it) }15val shrinker = doubles(0.0, 100.0).shrinker()16shrinker.shrink(50.0).forEach { println(it) }17val shrinker = doubles(0.0, 100.0).shrinker()18shrinker.shrink(50.0).forEach { println(it) }19val shrinker = doubles(0.0, 100.0).shrinker()

shrink

Using AI Code Generation

1import io.kotest.property.arbitrary.doubles2import io.kotest.property.arbitrary.shrink3fun main() {4    val shrunk = doubles().shrink(10.0)5    println(shrunk)6}7import io.kotest.property.arbitrary.integers8import io.kotest.property.arbitrary.shrink9fun main() {10    val shrunk = integers().shrink(10)11    println(shrunk)12}13import io.kotest.property.arbitrary.longs14import io.kotest.property.arbitrary.shrink15fun main() {16    val shrunk = longs().shrink(10)17    println(shrunk)18}19import io.kotest.property.arbitrary.strings20import io.kotest.property.arbitrary.shrink21fun main() {22    val shrunk = strings().shrink("abc")23    println(shrunk)24}25import io.kotest.property.arbitrary.lists26import io.kotest.property.arbitrary.shrink27fun main() {28    val shrunk = lists(integers()).shrink(listOf(1,2,3))29    println(shrunk)30}31import io.kotest.property.arbitrary.sets32import io.kotest.property.arbitrary.shrink33fun main() {34    val shrunk = sets(integers()).shrink(setOf(1,2,3))35    println(shrunk)36}

shrink

Using AI Code Generation

1    fun testShrink() {2        val doubleArb = doubles(0.0, 100.0)3        val shrinker = doubleArb.shrinker()4        val shrunk = shrinker.shrink(50.0)5        val shrunkValues = shrunk.toList()6        println(shrunkValues)7    }8    fun testShrink() {9        val intArb = ints(0, 100)10        val shrinker = intArb.shrinker()11        val shrunk = shrinker.shrink(50)12        val shrunkValues = shrunk.toList()13        println(shrunkValues)14    }15    fun testShrink() {16        val longArb = longs(0, 100)17        val shrinker = longArb.shrinker()18        val shrunk = shrinker.shrink(50)19        val shrunkValues = shrunk.toList()20        println(shrunkValues)21    }22    fun testShrink() {23        val stringArb = strings()24        val shrinker = stringArb.shrinker()25        val shrunk = shrinker.shrink("hello")26        val shrunkValues = shrunk.toList()27        println(shrunkValues)28    }29    fun testShrink() {30        val listArb = lists(ints(1, 10))31        val shrinker = listArb.shrinker()32        val shrunk = shrinker.shrink(listOf(1, 2, 3))33        val shrunkValues = shrunk.toList()34        println(shrunkValues)35    }36    fun testShrink() {37        val setArb = sets(ints(1, 10))38        val shrinker = setArb.shrinker()39        val shrunk = shrinker.shrink(setOf(1,

shrink

Using AI Code Generation

1    val shrinker = doubles(-100.0, 100.0).shrinker2    val shrunk = shrinker.shrink(100.0)3    println(shrunk)4    val shrinker1 = ints(-100, 100).shrinker5    val shrunk1 = shrinker1.shrink(100)6    println(shrunk1)7}

shrink

Using AI Code Generation

1+val arbDouble = Arb.doubles(-1000.0, 1000.0)2+val arbInt = Arb.ints(-1000, 1000)3+val arbString = Arb.strings()4+val arbChar = Arb.chars()5+val arbBoolean = Arb.booleans()6+val arbByte = Arb.bytes()7+val arbFloat = Arb.floats()8+val arbLong = Arb.longs()9+val arbShort = Arb.shorts()10+val arbDuration = Arb.durations()11+val arbLocalDate = Arb.localDates()12+val arbLocalTime = Arb.localTimes()13+val arbLocalDateTime = Arb.localDateTimes()14+val arbZonedDateTime = Arb.zonedDateTimes()15+val arbInstant = Arb.instants()16+val arbOffsetTime = Arb.offsetTimes()17+val arbOffsetDateTime = Arb.offsetDateTimes()18+val arbMonthDay = Arb.monthDays()19+val arbYearMonth = Arb.yearMonths()20+val arbYear = Arb.years()21+val arbPeriod = Arb.periods()22+val arbZoneId = Arb.zoneIds()23+val arbZoneOffset = Arb.zoneOffsets()24+val arbBigInteger = Arb.bigIntegers()25+val arbBigDecimal = Arb.bigDecimals()26+val arbUUID = Arb.uuids()27+val arbEnum = Arb.enums<String>()28+val arbEnum2 = Arb.enums(WeekDay::class)29+val arbEnum3 = Arb.enums(WeekDay::class, WeekDay.SATURDAY)30+val arbEnum4 = Arb.enums(WeekDay::class, WeekDay.SATURDAY, WeekDay.SUNDAY)31+val arbEnum5 = Arb.enums(WeekDay::class, WeekDay.SATURDAY, WeekDay.SUNDAY, WeekDay.MONDAY)32+val arbEnum6 = Arb.enums(WeekDay::class, WeekDay.SATURDAY, WeekDay.SUNDAY, WeekDay.MONDAY, WeekDay.TUESDAY)33+val arbEnum7 = Arb.enums(WeekDay::class, WeekDay.SATURDAY, WeekDay.SUNDAY, WeekDay.MONDAY, WeekDay.TUESDAY, WeekDay.WEDNESDAY)34+val arbEnum8 = Arb.enums(WeekDay::class, WeekDay.SATURDAY, WeekDay.SUNDAY, WeekDay.MONDAY, WeekDay.TUESDAY, WeekDay.WEDNESDAY, WeekDay

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