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How to use Arb.next method of io.kotest.property.arbitrary.arbs class

Best Kotest code snippet using io.kotest.property.arbitrary.arbs.Arb.next

products.kt

Source:products.kt

1package io.kotest.property.arbs.products2import io.kotest.property.Arb3import io.kotest.property.arbitrary.flatMap4import io.kotest.property.arbitrary.map5import io.kotest.property.arbitrary.take6import io.kotest.property.arbs.Color7import io.kotest.property.arbs.color8import kotlin.random.Random9data class Product(10  val sku: Sku,11  val brand: Brand,12  val gtin: Gtin,13  val price: Int, // cents14  val quantity: Int,15  val material: String,16  val color: Color?,17  val size: String,18  val name: String,19  val taxonomy: GoogleTaxonomy20)21data class Sku(val value: String)22data class Gtin(val value: String)23fun Arb.Companion.products() = color().flatMap { color ->24  brand().flatMap { brand ->25    googleTaxonomy().map { taxonomy ->26      val sku = List(3) { ('A'..'Z').random() }.joinToString("") + List(8) { Random.nextInt(0, 10) }.joinToString("")27      val gtin = List(12) { Random.nextInt(0, 10) }.joinToString("")28      Product(29        sku = Sku(sku),30        brand = brand,31        gtin = Gtin(gtin),32        price = Random.nextInt(1000, 25000),33        quantity = Random.nextInt(0, 999),34        material = listOf("wool", "leather", "silk", "jersey", "cotton", "nylon").random(),35        color = color,36        size = listOf("XS", "S", "M", "L", "XL", "XXL", "XXXL").random(),37        name = listOf(38          "onesie",39          "dress shirt",40          "neck tie",41          "varsity top",42          "jumper",43          "summer top",44          "zipped jacket",45          "sweater",46          "hoodie",47          "sneakers",48          "blouse",49          "tuxedo",50          "sports tee",51          "running top",52          "long sleeve shirt",53          "short sleeve shirt",54          "winter jacket"55        ).random(),56        taxonomy = taxonomy57      )58    }59  }60}61fun main() {62  Arb.products().take(100).forEach(::println)63}...

cluedo.kt

Source:cluedo.kt

1package io.kotest.property.arbs.games2import io.kotest.property.Arb3import io.kotest.property.arbitrary.arbitrary4import io.kotest.property.arbitrary.flatMap5import io.kotest.property.arbitrary.of6data class CluedoSuspect(val name: String) {7  companion object {8    val all = listOf(9      CluedoSuspect("Colonel Mustard"),10      CluedoSuspect("Miss Scarlett"),11      CluedoSuspect("Mrs. Peacock"),12      CluedoSuspect("Mrs. White"),13      CluedoSuspect("Reverend Green"),14      CluedoSuspect("Professor Plum"),15    )16  }17}18data class CluedoWeapon(val name: String) {19  companion object {20    val all = listOf(21      CluedoWeapon("Revolver"),22      CluedoWeapon("Dagger"),23      CluedoWeapon("Spanner"),24      CluedoWeapon("Rope"),25      CluedoWeapon("Lead Piping"),26      CluedoWeapon("Candlestick"),27    )28  }29}30data class CluedoLocation(val name: String) {31  companion object {32    val all = listOf(33      CluedoLocation("Ballroom"),34      CluedoLocation("Billiard Room"),35      CluedoLocation("Conservatory"),36      CluedoLocation("Dining Room"),37      CluedoLocation("Hall"),38      CluedoLocation("Library"),39      CluedoLocation("Lounge"),40      CluedoLocation("Kitchen"),41      CluedoLocation("Study"),42    )43  }44}45data class CluedoAccusation(46  val suspect: CluedoSuspect,47  val weapon: CluedoWeapon,48  val location: CluedoLocation,49  val correctGuess: Boolean,50)51fun Arb.Companion.cluedoSuspects() = Arb.of(CluedoSuspect.all)52fun Arb.Companion.cluedoWeapons() = Arb.of(CluedoWeapon.all)53fun Arb.Companion.cluedoLocations() = Arb.of(CluedoLocation.all)54fun Arb.Companion.cluedoAccusations() = cluedoSuspects().flatMap { suspect ->55  cluedoWeapons().flatMap { weapon ->56    cluedoLocations().flatMap { location ->57      arbitrary {58        CluedoAccusation(suspect, weapon, location, it.random.nextDouble() < 0.05)59      }60    }61  }62}...

wine.kt

Source:wine.kt

1package io.kotest.property.arbs.wine2import io.kotest.property.Arb3import io.kotest.property.arbitrary.flatMap4import io.kotest.property.arbitrary.map5import io.kotest.property.arbitrary.of6import io.kotest.property.arbitrary.take7import io.kotest.property.arbs.Name8import io.kotest.property.arbs.loadResourceAsLines9import io.kotest.property.arbs.name10import kotlin.random.Random11private val vineyards = lazy { loadResourceAsLines("/wine/vineyards.txt") }12private val regions = lazy { loadResourceAsLines("/wine/region.txt") }13private val wineries = lazy { loadResourceAsLines("/wine/winery.txt") }14private val varities = lazy { loadResourceAsLines("/wine/variety.txt") }15fun Arb.Companion.vineyards() = Arb.of(vineyards.value).map { Vineyard(it) }16fun Arb.Companion.wineRegions() = Arb.of(regions.value).map { WineRegion(it) }17fun Arb.Companion.wineries() = Arb.of(wineries.value).map { Winery(it) }18fun Arb.Companion.wineVarities() = Arb.of(varities.value).map { WineVariety(it) }19fun Arb.Companion.wines() = vineyards().flatMap { vineyard ->20  wineRegions().flatMap { region ->21    wineVarities().flatMap { variety ->22      wineries().map { winery ->23        Wine(vineyard, variety, winery, region, Random.nextInt(1920, 2020))24      }25    }26  }27}28fun Arb.Companion.wineReviews() = wines().  flatMap { wine ->29  name().map { name ->30    WineReview(wine, Random.nextDouble(0.1, 5.0), name)31  }32}33fun main() {34  Arb.wineReviews().take(100).forEach(::println)35}36data class Wine(37  val vineyard: Vineyard,38  val variety: WineVariety,39  val winery: Winery,40  val region: WineRegion,41  val year: Int42)43data class WineReview(val wine: Wine, val rating: Double, val name: Name)44data class Vineyard(val value: String)45data class WineVariety(val value: String)46data class Winery(val value: String)47data class WineRegion(val value: String)...

tube.kt

Source:tube.kt

1package io.kotest.property.arbs.tube2import com.univocity.parsers.csv.CsvParser3import com.univocity.parsers.csv.CsvParserSettings4import io.kotest.property.Arb5import io.kotest.property.arbitrary.arbitrary6import io.kotest.property.arbitrary.flatMap7import io.kotest.property.arbitrary.map8import io.kotest.property.arbs.loadResource9import java.time.LocalDateTime10import kotlin.random.Random11data class Station(12  val id: Long,13  val latitude: Double,14  val longitude: Double,15  val name: String,16  val zone: Double,17  val lines: Int,18  val rail: Int19)20enum class FareMethod {21  Oyster, Contactless, NetworkRail, Mobile22}23data class Journey(24  val start: Station,25  val end: Station,26  val date: LocalDateTime,27  val durationMinutes: Int,28  val farePence: Int,29  val method: FareMethod30)31private val settings = CsvParserSettings().apply { this.isHeaderExtractionEnabled = true }32private val stations = CsvParser(settings)33  .parseAllRecords(loadResource("/tube/stations.csv"))34  .map {35    Station(36      it.getLong("id"),37      it.getDouble("latitude"),38      it.getDouble("longitude"),39      it.getString("name"),40      it.getDouble("zone"),41      it.getInt("total_lines"),42      it.getInt("rail")43    )44  }45fun Arb.Companion.tubeStation() = arbitrary { stations.random(it.random) }46fun Arb.Companion.tubeJourney() = Arb.tubeStation().flatMap { stationA ->47  Arb.tubeStation().map { stationB ->48    val date = LocalDateTime.of(2020, 12, 31, 23, 59, 59)49      .minusDays(Random.nextLong(365 * 20))50      .minusSeconds(Random.nextLong(60 * 60 * 24))51    Journey(52      stationA,53      stationB,54      date,55      Random.nextInt(1, 59),56      Random.nextInt(0, 65) * 10,57      FareMethod.values().random()58    )59  }60}...

chess.kt

Source:chess.kt

1package io.kotest.property.arbs.games2import io.kotest.property.Arb3import io.kotest.property.arbitrary.arbitrary4import io.kotest.property.arbitrary.bind5import io.kotest.property.arbitrary.of6import io.kotest.property.arbitrary.orNull7data class ChessPiece(val name: String, val points: Int) {8  companion object {9    val all = listOf(10      ChessPiece("Pawn", 1),11      ChessPiece("Bishop", 5),12      ChessPiece("Knight", 5),13      ChessPiece("Rook", 5),14      ChessPiece("Queen", 9),15      ChessPiece("King", 4),16    )17  }18}19fun Arb.Companion.chessSquare(): Arb<String> = arbitrary {20  ('A' + it.random.nextInt(0, 8)).toString() + it.random.nextInt(1, 9)21}22fun Arb.Companion.chessPiece() = Arb.of(ChessPiece.all)23data class ChessMove(val from: String, val to: String, val capture: ChessPiece?)24fun Arb.Companion.chessMove(): Arb<ChessMove> = Arb.bind(25  Arb.chessSquare(),26  Arb.chessSquare(),27  Arb.chessPiece().orNull(0.9)28) { from, to, capture ->29  ChessMove(from, to, capture)30}...

logins.kt

Source:logins.kt

1package io.kotest.property.arbs2import io.kotest.property.Arb3import io.kotest.property.arbitrary.GeoLocation4import io.kotest.property.arbitrary.arbitrary5import io.kotest.property.arbitrary.geoLocation6import io.kotest.property.arbitrary.ipAddressV47import io.kotest.property.arbitrary.next8fun Arb.Companion.logins() = arbitrary { rs ->9  Login(10    timestamp = rs.random.nextLong(1000000000, 10000000000),11    username = Arb.usernames().next(rs),12    location = geoLocation().next(rs),13    ipAddress = ipAddressV4().next(rs),14    result = if (rs.random.nextBoolean()) "success" else listOf(15      "invalid password",16      "unknown username",17      "forbidden ipaddress",18      "banned username"19    ).random(rs.random)20  )21}22data class Login(23  val timestamp: Long,24  val username: Username,25  val location: GeoLocation,26  val ipAddress: String,27  val result: String,28)...

domains.kt

Source:domains.kt

1package io.kotest.property.arbs2import io.kotest.property.Arb3import io.kotest.property.arbitrary.arbitrary4/**5 * Generates domains where the domain name is a random string with the given length,6 * and the tld is a real country level tld.7 *8 * Will randomly include www, cdn and www2 prefixes.9 */10fun Arb.Companion.domain(nameLength: IntRange = 3..20): Arb<Domain> = arbitrary { rs ->11  val prefix = prefixes.random(rs.random)12  val name = List(rs.random.nextInt(nameLength.first, nameLength.last)) { ('a'..'z').random(rs.random) }.joinToString("")13  val domain = listOfNotNull(prefix, name, tlds.random(rs.random)).joinToString(".")14  Domain(domain)15}16private val prefixes = listOf("www", "www2", "cdn", null)17private val tlds = loadResourceAsLines("/country_tlds.txt")18data class Domain(val value: String)...

zipcodes.kt

Source:zipcodes.kt

1package io.kotest.property.arbs.geo2import io.kotest.property.Arb3import io.kotest.property.arbitrary.arbitrary4data class Zipcode(val value: String)5fun Arb.Companion.zipcodes() = arbitrary { it.random.nextInt(1000, 99999).toString().padStart(5, '0') }...

Arb.next

Using AI Code Generation

1val arb = Arb.next { it.nextBoolean() }2val arb = Arb.next { it.nextInt() }3val arb = Arb.next { it.nextLong() }4val arb = Arb.next { it.nextFloat() }5val arb = Arb.next { it.nextDouble() }6val arb = Arb.next { it.nextString() }7val arb = Arb.next { it.nextChar() }8val arb = Arb.next { it.nextByte() }9val arb = Arb.next { it.nextShort() }10val arb = Arb.next { it.nextBigInteger() }11val arb = Arb.next { it.nextBigDecimal() }12val arb = Arb.next { it.nextEnum() }13val arb = Arb.next { it.nextKClass() }14val arb = Arb.next { it.nextUuid() }15val arb = Arb.next { it.nextLocalDate() }16val arb = Arb.next { it.nextLocalDateTime() }17val arb = Arb.next { it.nextLocalTime() }

Arb.next

Using AI Code Generation

1val arb = Arb.int(1..100)2val next = arb.next(RandomSource.Default)3val arb = Arb.int(1..100)4val next = arb.next(RandomSource.Default)5val arb = Arb.int(1..100)6val next = arb.next(RandomSource.Default)7val arb = Arb.int(1..100)8val next = arb.next(RandomSource.Default)9val arb = Arb.int(1..100)10val next = arb.next(RandomSource.Default)11val arb = Arb.int(1..100)12val next = arb.next(RandomSource.Default)13val arb = Arb.int(1..100)14val next = arb.next(RandomSource.Default)15val arb = Arb.int(1..100)16val next = arb.next(RandomSource.Default)17val arb = Arb.int(1..100)18val next = arb.next(RandomSource.Default)19val arb = Arb.int(1..100)20val next = arb.next(RandomSource.Default)21val arb = Arb.int(1..100)22val next = arb.next(RandomSource.Default)23val arb = Arb.int(1..100)24val next = arb.next(RandomSource.Default)25val arb = Arb.int(1..100)26val next = arb.next(RandomSource.Default)

Arb.next

Using AI Code Generation

1val arb = Arb.next<String>()2val arb = Arb.next<Int>()3val arb = Arb.next<Double>()4val arb = Arb.next<Float>()5val arb = Arb.next<Char>()6val arb = Arb.next<Byte>()7val arb = Arb.next<Short>()8val arb = Arb.next<Boolean>()9val arb = Arb.next<Long>()10val arb = Arb.next<BigInteger>()11val arb = Arb.next<BigDecimal>()12val arb = Arb.next<UUID>()13val arb = Arb.next<LocalDate>()14val arb = Arb.next<LocalTime>()15val arb = Arb.next<LocalDateTime>()16val arb = Arb.next<OffsetTime>()17val arb = Arb.next<OffsetDateTime>()18val arb = Arb.next<ZonedDateTime>()19val arb = Arb.next<Instant>()20val arb = Arb.next<Duration>()21val arb = Arb.next<Period>()22val arb = Arb.next<Year>()23val arb = Arb.next<YearMonth>()24val arb = Arb.next<MonthDay>()25val arb = Arb.next<ZoneId>()26val arb = Arb.next<ZoneOffset>()27val arb = Arb.next<DayOfWeek>()28val arb = Arb.next<Month>()29val arb = Arb.next<URL>()30val arb = Arb.next<URI>()31val arb = Arb.next<File>()32val arb = Arb.next<Locale>()33val arb = Arb.next<Currency>()

Arb.next

Using AI Code Generation

1val arb = Arb.string(10)2val next = arb.next(RandomSource.Default)3println(next.value)4val arb = Arb.string(10)5val next = arb.next(RandomSource.Default)6println(next.value)7val arb = Arb.string(10)8val next = arb.next(RandomSource.Default)9println(next.value)10val arb = Arb.string(10)11val next = arb.next(RandomSource.Default)12println(next.value)13val arb = Arb.string(10)14val next = arb.next(RandomSource.Default)15println(next.value)16val arb = Arb.string(10)17val next = arb.next(RandomSource.Default)18println(next.value)19val arb = Arb.string(10)20val next = arb.next(RandomSource.Default)21println(next.value)22val arb = Arb.string(10)23val next = arb.next(RandomSource.Default)24println(next.value)25val arb = Arb.string(10)26val next = arb.next(RandomSource.Default)27println(next.value)28val arb = Arb.string(10)29val next = arb.next(RandomSource.Default)30println(next.value)31val arb = Arb.string(10)32val next = arb.next(RandomSource.Default)33println(next.value)34val arb = Arb.string(10)35val next = arb.next(RandomSource.Default)36println(next.value)37val arb = Arb.string(10)38val next = arb.next(RandomSource.Default)

Arb.next

Using AI Code Generation

1val arb = Arb.next(1, 10)2val prop = forAll(arb) { a -> a >= 1 && a <= 10 }3prop.check()4val arb = Arb.next(1, 10)5val prop = forAll(arb) { a -> a >= 1 && a <= 10 }6prop.check()7val arb = Arb.next(1, 10)8val prop = forAll(arb) { a -> a >= 1 && a <= 10 }9prop.check()10val arb = Arb.next(1, 10)11val prop = forAll(arb) { a -> a >= 1 && a <= 10 }12prop.check()13val arb = Arb.next(1, 10)14val prop = forAll(arb) { a -> a >= 1 && a <= 10 }15prop.check()16val arb = Arb.next(1, 10)17val prop = forAll(arb) { a -> a >= 1 && a <= 10 }18prop.check()19val arb = Arb.next(1, 10)20val prop = forAll(arb) { a -> a >= 1 && a <= 10 }21prop.check()22val arb = Arb.next(1, 10)23val prop = forAll(arb) { a -> a >= 1 && a <= 10 }24prop.check()25val arb = Arb.next(1, 10)26val prop = forAll(arb) { a -> a >= 1 && a <= 10 }27prop.check()28val arb = Arb.next(1, 10)

Arb.next

Using AI Code Generation

1val arb = Arb.int()2val nextInt = arb.next(RandomSource.Default)3val nextInt = arb.next(RandomSource.Default, 1)4val nextInt = arb.next(RandomSource.Default, 1, 10)5val nextInt = arb.next(RandomSource.Default, 1, 10, 100)6val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000)7val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000, 10000)8val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000, 10000, 100000)9val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000, 10000, 100000, 1000000)10val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000)11val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000)12val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000)13val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 10000000000)14val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 10000000000, 100000000000)15val nextInt = arb.next(RandomSource.Default, 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000, 100000000

Arb.next

Using AI Code Generation

1@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )2@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )3@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )4@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )5@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )6@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )7@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )8@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )9@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )10@DisplayName ( "The next method of Arb class of io.kotest.property.arbitrary.arbs package should return a value of type T" )

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