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 Github

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...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 }...

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Arb.kt

Source:Arb.kt Github

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...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) }...

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doubles.kt

Source:doubles.kt Github

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...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)...

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Generators.kt

Source:Generators.kt Github

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...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) }...

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OrNullTest.kt

Source:OrNullTest.kt Github

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...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})...

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shrink

Using AI Code Generation

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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()

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shrink

Using AI Code Generation

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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()

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shrink

Using AI Code Generation

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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}

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shrink

Using AI Code Generation

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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,

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shrink

Using AI Code Generation

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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}

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shrink

Using AI Code Generation

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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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