How to use Arb.filterIsInstance method of io.kotest.property.arbitrary.filter class

Best Kotest code snippet using io.kotest.property.arbitrary.filter.Arb.filterIsInstance

ValidatedTest.kt

Source:ValidatedTest.kt

1package arrow.core2import arrow.core.Either.Left3import arrow.core.Either.Right4import arrow.core.test.UnitSpec5import arrow.typeclasses.Monoid6import arrow.typeclasses.Semigroup7import arrow.core.test.generators.validated8import io.kotest.assertions.fail9import io.kotest.matchers.nulls.shouldBeNull10import io.kotest.property.Arb11import io.kotest.property.checkAll12import io.kotest.matchers.shouldBe13import io.kotest.property.arbitrary.int14import io.kotest.property.arbitrary.long15import io.kotest.property.arbitrary.orNull16import io.kotest.property.arbitrary.string17@Suppress("RedundantSuspendModifier")18class ValidatedTest : UnitSpec() {19  init {20    "fold should call function on Invalid" {21      val exception = Exception("My Exception")22      val result: Validated<Throwable, String> = Invalid(exception)23      result.fold(24        { e -> e.message + " Checked" },25        { fail("Some should not be called") }26      ) shouldBe "My Exception Checked"27    }28    "fold should call function on Valid" {29      val value = "Some value"30      val result: Validated<Throwable, String> = Valid(value)31      result.fold(32        { fail("None should not be called") },33        { a -> "$a processed" }34      ) shouldBe "$value processed"35    }36    "leftMap should modify error" {37      Valid(10).mapLeft { fail("None should not be called") } shouldBe Valid(10)38      Invalid(13).mapLeft { i -> "$i is Coming soon!" } shouldBe Invalid("13 is Coming soon!")39    }40    "exist should return false if is Invalid" {41      Invalid(13).exist { fail("None should not be called") } shouldBe false42    }43    "exist should return the value of predicate if is Valid" {44      Valid(13).exist { v -> v > 10 } shouldBe true45      Valid(13).exist { v -> v < 10 } shouldBe false46    }47    "swap should return Valid(e) if is Invalid and Invalid(v) otherwise" {48      Valid(13).swap() shouldBe Invalid(13)49      Invalid(13).swap() shouldBe Valid(13)50    }51    "getOrElse should return value if is Valid or default otherwise" {52      Valid(13).getOrElse { fail("None should not be called") } shouldBe 1353      Invalid(13).getOrElse { "defaultValue" } shouldBe "defaultValue"54    }55    "orNull should return value if is Valid or null otherwise" {56      Valid(13).orNull() shouldBe 1357      val invalid: Validated<Int, Int> = Invalid(13)58      invalid.orNull() shouldBe null59    }60    "orNone should return value if is Valid or None otherwise" {61      Valid(13).orNone() shouldBe Some(13)62      val invalid: Validated<Int, Int> = Invalid(13)63      invalid.orNone() shouldBe None64    }65    "valueOr should return value if is Valid or the the result of f otherwise" {66      Valid(13).valueOr { fail("None should not be called") } shouldBe 1367      Invalid(13).valueOr { e -> "$e is the defaultValue" } shouldBe "13 is the defaultValue"68    }69    "orElse should return Valid(value) if is Valid or the result of default otherwise" {70      Valid(13).orElse { fail("None should not be called") } shouldBe Valid(13)71      Invalid(13).orElse { Valid("defaultValue") } shouldBe Valid("defaultValue")72      Invalid(13).orElse { Invalid("defaultValue") } shouldBe Invalid("defaultValue")73    }74    "foldLeft should return b when is Invalid" {75      Invalid(13).foldLeft("Coming soon!") { _, _ -> fail("None should not be called") } shouldBe "Coming soon!"76    }77    "foldLeft should return f processed when is Valid" {78      Valid(10).foldLeft("Tennant") { b, a -> "$a is $b" } shouldBe "10 is Tennant"79    }80    "toEither should return Either.Right(value) if is Valid or Either.Left(error) otherwise" {81      Valid(10).toEither() shouldBe Right(10)82      Invalid(13).toEither() shouldBe Left(13)83    }84    "toIor should return Ior.Right(value) if is Valid or Ior.Left(error) otherwise" {85      Valid(10).toIor() shouldBe Ior.Right(10)86      Invalid(13).toIor() shouldBe Ior.Left(13)87    }88    "toOption should return Some(value) if is Valid or None otherwise" {89      Valid(10).toOption() shouldBe Some(10)90      Invalid(13).toOption() shouldBe None91    }92    "toList should return listOf(value) if is Valid or empty list otherwise" {93      Valid(10).toList() shouldBe listOf(10)94      Invalid(13).toList() shouldBe listOf<Int>()95    }96    "toValidatedNel should return Valid(value) if is Valid or Invalid<NonEmptyList<E>, A>(error) otherwise" {97      Valid(10).toValidatedNel() shouldBe Valid(10)98      Invalid(13).toValidatedNel() shouldBe Invalid(NonEmptyList(13, listOf()))99    }100    "findValid should return the first Valid value or combine or Invalid values otherwise" {101      Valid(10).findValid(Semigroup.int()) { fail("None should not be called") } shouldBe Valid(10)102      Invalid(10).findValid(Semigroup.int()) { Valid(5) } shouldBe Valid(5)103      Invalid(10).findValid(Semigroup.int()) { Invalid(5) } shouldBe Invalid(15)104    }105    val nullableLongSemigroup = object : Monoid<Long?> {106      override fun empty(): Long? = 0107      override fun Long?.combine(b: Long?): Long? =108        Nullable.zip(this@combine, b) { a, bb -> a + bb }109    }110    "zip identity" {111      checkAll(Arb.validated(Arb.long().orNull(), Arb.int().orNull())) { validated ->112        val res = validated.zip(nullableLongSemigroup, Valid(Unit)) { a, _ -> a }113        res shouldBe validated114      }115    }116    "tap applies effects returning the original value" {117      checkAll(Arb.validated(Arb.long(), Arb.int())) { validated ->118        var effect = 0119        val res = validated.tap { effect += 1 }120        val expected = when (validated) {121          is Validated.Valid -> 1122          is Validated.Invalid -> 0123        }124        effect shouldBe expected125        res shouldBe validated126      }127    }128    "tapInvalid applies effects returning the original value" {129      checkAll(Arb.validated(Arb.long(), Arb.int())) { validated ->130        var effect = 0131        val res = validated.tapInvalid { effect += 1 }132        val expected = when (validated) {133          is Validated.Valid -> 0134          is Validated.Invalid -> 1135        }136        effect shouldBe expected137        res shouldBe validated138      }139    }140    "zip is derived from flatMap" {141      checkAll(142        Arb.validated(Arb.long().orNull(), Arb.int().orNull()),143        Arb.validated(Arb.long().orNull(), Arb.int().orNull()),144        Arb.validated(Arb.long().orNull(), Arb.int().orNull()),145        Arb.validated(Arb.long().orNull(), Arb.int().orNull()),146        Arb.validated(Arb.long().orNull(), Arb.int().orNull()),147        Arb.validated(Arb.long().orNull(), Arb.int().orNull()),148        Arb.validated(Arb.long().orNull(), Arb.int().orNull()),149        Arb.validated(Arb.long().orNull(), Arb.int().orNull()),150        Arb.validated(Arb.long().orNull(), Arb.int().orNull()),151        Arb.validated(Arb.long().orNull(), Arb.int().orNull())152      ) { a, b, c, d, e, f, g, h, i, j ->153        val res = a.zip(154          nullableLongSemigroup,155          b, c, d, e, f, g, h, i, j156        ) { a, b, c, d, e, f, g, h, i, j ->157          Nullable.zip(158            a,159            b,160            c,161            d,162            e,163            f,164            g,165            h,166            i,167            j168          ) { a, b, c, d, e, f, g, h, i, j -> a + b + c + d + e + f + g + h + i + j }169        }170        val all = listOf(a, b, c, d, e, f, g, h, i, j)171        val isValid = all.all { it.isValid }172        val expected: Validated<Long?, Int?> =173          if (isValid) Valid(all.fold<Validated<Long?, Int?>, Int?>(0) { acc, validated ->174            Nullable.zip(175              acc,176              validated.orNull()177            ) { a, b -> a + b }178          })179          else Invalid(180            all.filterIsInstance<Invalid<Long?>>().map { it.value }.combineAll(nullableLongSemigroup)181          )182        res shouldBe expected183      }184    }185    "zip should return Valid(f(a)) if both are Valid" {186      Valid(10).zip(Semigroup.int(), Valid { a: Int -> a + 5 }) { a, ff -> ff(a) } shouldBe Valid(15)187    }188    "zip should return first Invalid found if is unique or combine both otherwise" {189      Invalid(10).zip(Semigroup.int(), Valid { a: Int -> a + 5 }) { a, ff -> ff(a) } shouldBe Invalid(10)190      Valid(10).zip<Int, Int, (Int) -> Int, Int>(Semigroup.int(), Invalid(5)) { a, ff -> ff(a) } shouldBe Invalid(5)191      Invalid(10).zip<Int, Int, (Int) -> Int, Int>(Semigroup.int(), Invalid(5)) { a, ff -> ff(a) } shouldBe Invalid(15)192    }193    data class MyException(val msg: String) : Exception()194    "fromEither should return Valid if is Either.Right or Failure otherwise" {195      Validated.fromEither(Right(10)) shouldBe Valid(10)196      Validated.fromEither(Left(10)) shouldBe Invalid(10)197    }198    "fromOption should return Valid if is Some or Invalid otherwise" {199      Validated.fromOption<Int, Int>(Some(10)) { fail("should not be called") } shouldBe Valid(10)200      Validated.fromOption<Int, Int>(None) { 5 } shouldBe Invalid(5)201    }202    "fromNullable should return Valid if is not-null or Invalid otherwise" {203      Validated.fromNullable<Int, Int>(10) { fail("should not be called") } shouldBe Valid(10)204      Validated.fromNullable<Int, Int>(null) { 5 } shouldBe Invalid(5)205    }206    "invalidNel<E> should return a Invalid<NonEmptyList<E>>" {207      Validated.invalidNel<Int, Int>(10) shouldBe Invalid(NonEmptyList(10, listOf()))208    }209    "withEither should return Valid(result) if f return Right" {210      Valid(10).withEither { it.map { it + 5 } } shouldBe Valid(15)211      Invalid(10).withEither { Right(5) } shouldBe Valid(5)212    }213    "withEither should return Invalid(result) if f return Left" {214      Valid(10).withEither { Left(5) } shouldBe Invalid(5)215      Invalid(10).withEither(::identity) shouldBe Invalid(10)216    }217    "catch should return Valid(result) when f does not throw" {218      suspend fun loadFromNetwork(): Int = 1219      Validated.catch { loadFromNetwork() } shouldBe Valid(1)220    }221    "catch should return Invalid(result) when f throws" {222      val exception = MyException("Boom!")223      suspend fun loadFromNetwork(): Int = throw exception224      Validated.catch { loadFromNetwork() } shouldBe Invalid(exception)225    }226    "catchNel should return Valid(result) when f does not throw" {227      suspend fun loadFromNetwork(): Int = 1228      Validated.catchNel { loadFromNetwork() } shouldBe Valid(1)229    }230    "catchNel should return Invalid(Nel(result)) when f throws" {231      val exception = MyException("Boom!")232      suspend fun loadFromNetwork(): Int = throw exception233      Validated.catchNel { loadFromNetwork() } shouldBe Invalid(nonEmptyListOf(exception))234    }235    "Cartesian builder should build products over homogeneous Validated" {236      Valid("11th").zip(237        Semigroup.string(),238        Valid("Doctor"),239        Valid("Who")240      ) { a, b, c -> "$a $b $c" } shouldBe Valid("11th Doctor Who")241    }242    "Cartesian builder should build products over heterogeneous Validated" {243      Valid(13).zip(244        Semigroup.string(),245        Valid("Doctor"),246        Valid(false)247      ) { a, b, c -> "${a}th $b is $c" } shouldBe Valid("13th Doctor is false")248    }249    "Cartesian builder should build products over Invalid Validated" {250      Invalid("fail1").zip(251        Semigroup.string(),252        Invalid("fail2"),253        Valid("Who")254      ) { _, _, _ -> "success!" } shouldBe Invalid("fail1fail2")255    }256    "Cartesian builder for nel doesn't need semigroup parameter" {257      "fail1".invalidNel().zip(258        "fail2".invalidNel()259      ) { _, _ -> "success!" } shouldBe Invalid(nonEmptyListOf("fail1", "fail2"))260    }261    "CombineK should combine Valid Validated" {262      val valid = Valid("Who")263      valid.combineK(Semigroup.string(), valid) shouldBe (Valid("Who"))264    }265    "CombineK should combine Valid and Invalid Validated" {266      val valid = Valid("Who")267      val invalid = Invalid("Nope")268      valid.combineK(Semigroup.string(), invalid) shouldBe (Valid("Who"))269    }270    "CombineK should combine Invalid Validated" {271      val invalid = Invalid("Nope")272      invalid.combineK(Semigroup.string(), invalid) shouldBe (Invalid("NopeNope"))273    }274    "Combine should combine Valid Validated" {275      val valid: Validated<String, String> = Valid("Who")276      valid.combine(Monoid.string(), Monoid.string(), valid) shouldBe (Valid("WhoWho"))277    }278    "Combine should combine Valid and Invalid Validated" {279      val valid = Valid("Who")280      val invalid = Invalid("Nope")281      valid.combine(Monoid.string(), Monoid.string(), invalid) shouldBe (Invalid("Nope"))282    }283    "Combine should combine Invalid Validated" {284      val invalid: Validated<String, String> = Invalid("Nope")285      invalid.combine(Monoid.string(), Monoid.string(), invalid) shouldBe (Invalid("NopeNope"))286    }287    "traverse should yield list when validated is valid" {288      val valid = Valid("Who")289      val invalid = Invalid("Nope")290      valid.traverse { listOf(it) } shouldBe listOf(Valid("Who"))291      invalid.traverse { listOf(it) } shouldBe emptyList()292    }293    "sequence should yield consistent result with traverse" {294      checkAll(Arb.string(), Arb.string()) { a: String, b: String ->295        val valid = Valid(a)296        val invalid = Invalid(b)297        valid.traverse { listOf(it) } shouldBe valid.map { listOf(it) }.sequence()298        invalid.traverse { listOf(it) } shouldBe invalid.map { listOf(it) }.sequence()299      }300    }301    "traverseOption should yield option when validated is valid" {302      val valid = Valid("Who")303      val invalid = Invalid("Nope")304      valid.traverseOption { Some(it) } shouldBe Some(Valid("Who"))305      invalid.traverseOption { Some(it) } shouldBe None306    }307    "sequenceOption should yield consistent result with traverseOption" {308      checkAll(Arb.string(), Arb.string()) { a: String, b: String ->309        val valid = Valid(a)310        val invalid = Invalid(b)311        valid.traverseOption { Some(it) } shouldBe valid.map { Some(it) }.sequenceOption()312        invalid.traverseOption { Some(it) } shouldBe invalid.map { Some(it) }.sequenceOption()313      }314    }315    "traverseNullable should yield non-null object when validated is valid" {316      val valid = Valid("Who")317      val invalid = Invalid("Nope")318      valid.traverseNullable<String?> { it } shouldBe Valid("Who")319      valid.traverseNullable<String?> { null }.shouldBeNull()320      invalid.traverseNullable<String?> { it }.shouldBeNull()321    }322    "sequenceNullable should yield consistent result with traverseNullable" {323      checkAll(Arb.string(), Arb.string()) { a: String, b: String ->324        val valid = Valid(a)325        val invalid = Invalid(b)326        valid.traverseNullable<String?> { it } shouldBe valid.map<String?> { it }.sequenceNullable()327        valid.traverseNullable<String?> { null } shouldBe valid.map<String?> { null }.sequenceNullable()328        invalid.traverseNullable<String?> { it } shouldBe invalid.map<String?> { it }.sequenceNullable()329      }330    }331    "traverseEither should wrap validated in either" {332      val valid = Valid("Who")333      val invalid = Invalid("Nope")334      valid.traverseEither { it.right() } shouldBe Valid("Who").right()335      invalid.traverseEither { it.right() } shouldBe Invalid("Nope").right()336    }337    "sequenceEither should yield consistent result with traverseEither" {338      checkAll(Arb.string(), Arb.string()) { a: String, b: String ->339        val valid = Valid(a)340        val invalid = Invalid(b)341        valid.traverseEither { Right(it) } shouldBe valid.map { Right(it) }.sequenceEither()342        invalid.traverseEither { Right(it) } shouldBe invalid.map { Right(it) }.sequenceEither()343      }344    }345    "bitraverse should wrap valid or invalid in a list" {346      val valid = Valid("Who")347      val invalid = Invalid("Nope")348      valid.bitraverse({ listOf(it) }, { listOf(it) }) shouldBe listOf(Valid("Who"))349      invalid.bitraverse({ listOf(it) }, { listOf(it) }) shouldBe listOf(Invalid("Nope"))350    }351    "bisequence should yield consistent result with bitraverse" {352      checkAll(Arb.string(), Arb.string()) { a: String, b: String ->353        val valid: Validated<String, String> = Valid(a)354        val invalid: Validated<String, String> = Invalid(b)355        valid.bimap({ listOf(it) }, { listOf(it) }).bisequence() shouldBe valid.bitraverse(356          { listOf(it) },357          { listOf(it) })358        invalid.bimap({ listOf(it) }, { listOf(it) }).bisequence() shouldBe invalid.bitraverse(359          { listOf(it) },360          { listOf(it) })361      }362    }363    "bitraverseOption should wrap valid or invalid in an option" {364      val valid = Valid("Who")365      val invalid = Invalid("Nope")366      valid.bitraverseOption({ Some(it) }, { Some(it) }) shouldBe Some(Valid("Who"))367      invalid.bitraverseOption({ Some(it) }, { Some(it) }) shouldBe Some(Invalid("Nope"))368    }369    "bisequenceOption should yield consistent result with bitraverseOption" {370      checkAll(Arb.string(), Arb.string()) { a: String, b: String ->371        val valid: Validated<String, String> = Valid(a)372        val invalid: Validated<String, String> = Invalid(b)373        valid.bimap({ Some(it) }, { Some(it) }).bisequenceOption() shouldBe374          valid.bitraverseOption({ Some(it) }, { Some(it) })375        invalid.bimap({ Some(it) }, { Some(it) }).bisequenceOption() shouldBe376          invalid.bitraverseOption({ Some(it) }, { Some(it) })377      }378    }379    "bitraverseNullable should wrap valid or invalid in a nullable" {380      val valid = Valid("Who")381      val invalid = Invalid("Nope")382      valid.bitraverseNullable({ it }, { it }) shouldBe Valid("Who")383      invalid.bitraverseNullable({ it }, { it }) shouldBe Invalid("Nope")384    }385    "bisequenceOption should yield consistent result with bitraverseOption" {386      checkAll(Arb.string().orNull(), Arb.string().orNull()) { a: String?, b: String? ->387        val valid: Validated<String?, String?> = Valid(a)388        val invalid: Validated<String?, String?> = Invalid(b)389        valid.bimap({ it }, { it }).bisequenceNullable() shouldBe390          valid.bitraverseNullable({ it }, { it })391        invalid.bimap({ it }, { it }).bisequenceNullable() shouldBe392          invalid.bitraverseNullable({ it }, { it })393      }394    }395    "bitraverseEither should wrap valid or invalid in an either" {396      val valid = Valid("Who")397      val invalid = Invalid("Nope")398      valid.bitraverseEither({ it.left() }, { it.right() }) shouldBe Valid("Who").right()399      invalid.bitraverseEither({ it.left() }, { it.right() }) shouldBe "Nope".left()400    }401    "bisequenceEither should yield consistent result with bitraverseEither" {402      checkAll(Arb.string(), Arb.string()) { a: String, b: String ->403        val valid: Validated<String, String> = Valid(a)404        val invalid: Validated<String, String> = Invalid(b)405        valid.bimap({ it.left() }, { it.right() }).bisequenceEither() shouldBe406          valid.bitraverseEither({ it.left() }, { it.right() })407        invalid.bimap({ it.left() }, { it.right() }).bisequenceEither() shouldBe408          invalid.bitraverseEither({ it.left() }, { it.right() })409      }410    }411    "andThen should return Valid(result) if f return Valid" {412      checkAll(Arb.int(), Arb.int()) { x, y ->413        Valid(x).andThen { Valid(it + y) } shouldBe Valid(x + y)414      }415    }416    "andThen should only run f on valid instances " {417      checkAll(Arb.int(), Arb.int()) { x, y ->418        Invalid(x).andThen { Valid(y) } shouldBe Invalid(x)419      }420    }421    "andThen should return Invalid(result) if f return Invalid " {422      checkAll(Arb.int(), Arb.int()) { x, y ->423        Valid(x).andThen { Invalid(it + y) } shouldBe Invalid(x + y)424      }425    }426  }427}...

OptionTest.kt

Source:OptionTest.kt

1package arrow.core2import arrow.core.computations.OptionEffect3import arrow.core.computations.RestrictedOptionEffect4import arrow.core.computations.ensureNotNull5import arrow.core.computations.option6import arrow.core.test.UnitSpec7import arrow.core.test.generators.option8import arrow.core.test.laws.FxLaws9import arrow.core.test.laws.MonoidLaws10import arrow.typeclasses.Monoid11import io.kotest.matchers.shouldBe12import io.kotest.matchers.shouldNotBe13import io.kotest.property.Arb14import io.kotest.property.arbitrary.boolean15import io.kotest.property.arbitrary.int16import io.kotest.property.arbitrary.long17import io.kotest.property.arbitrary.map18import io.kotest.property.arbitrary.orNull19import io.kotest.property.arbitrary.string20import io.kotest.property.checkAll21class OptionTest : UnitSpec() {22  val some: Option<String> = Some("kotlin")23  val none: Option<String> = None24  init {25    testLaws(26      MonoidLaws.laws(Monoid.option(Monoid.int()), Arb.option(Arb.int())),27      FxLaws.suspended<OptionEffect<*>, Option<String>, String>(28        Arb.string().map(Option.Companion::invoke),29        Arb.option(Arb.string()),30        Option<String>::equals,31        option::invoke32      ) {33        it.bind()34      },35      FxLaws.eager<RestrictedOptionEffect<*>, Option<String>, String>(36        Arb.string().map(Option.Companion::invoke),37        Arb.option(Arb.string()),38        Option<String>::equals,39        option::eager40      ) {41        it.bind()42      }43    )44    "ensure null in option computation" {45      checkAll(Arb.boolean(), Arb.int()) { predicate, i ->46        option {47          ensure(predicate)48          i49        } shouldBe if (predicate) Some(i) else None50      }51    }52    "ensureNotNull in option computation" {53      fun square(i: Int): Int = i * i54      checkAll(Arb.int().orNull()) { i: Int? ->55        option {56          val ii = i57          ensureNotNull(ii)58          square(ii) // Smart-cast by contract59        } shouldBe i.toOption().map(::square)60      }61    }62    "short circuit null" {63      option {64        val number: Int = "s".length65        val x = ensureNotNull(number.takeIf { it > 1 })66        x67        throw IllegalStateException("This should not be executed")68      } shouldBe None69    }70    "tap applies effects returning the original value" {71      checkAll(Arb.option(Arb.long())) { option ->72        var effect = 073        val res = option.tap { effect += 1 }74        val expected = when (option) {75          is Some -> 176          is None -> 077        }78        effect shouldBe expected79        res shouldBe option80      }81    }82    "tapNone applies effects returning the original value" {83      checkAll(Arb.option(Arb.long())) { option ->84        var effect = 085        val res = option.tapNone { effect += 1 }86        val expected = when (option) {87          is Some -> 088          is None -> 189        }90        effect shouldBe expected91        res shouldBe option92      }93    }94    "fromNullable should work for both null and non-null values of nullable types" {95      checkAll(Arb.int().orNull()) { a: Int? ->96        // This seems to be generating only non-null values, so it is complemented by the next test97        val o: Option<Int> = Option.fromNullable(a)98        if (a == null) o shouldBe None else o shouldBe Some(a)99      }100    }101    "fromNullable should return none for null values of nullable types" {102      val a: Int? = null103      Option.fromNullable(a) shouldBe None104    }105    "getOrElse" {106      some.getOrElse { "java" } shouldBe "kotlin"107      none.getOrElse { "java" } shouldBe "java"108    }109    "orNull" {110      some.orNull() shouldNotBe null111      none.orNull() shouldBe null112    }113    "map" {114      some.map(String::toUpperCase) shouldBe Some("KOTLIN")115      none.map(String::toUpperCase) shouldBe None116    }117    "zip" {118      checkAll(Arb.int()) { a: Int ->119        val op: Option<Int> = a.some()120        some.zip(op) { a, b -> a + b } shouldBe Some("kotlin$a")121        none.zip(op) { a, b -> a + b } shouldBe None122        some.zip(op) shouldBe Some(Pair("kotlin", a))123      }124    }125    "mapNotNull" {126      some.mapNotNull { it.toIntOrNull() } shouldBe None127      some.mapNotNull { it.toUpperCase() } shouldBe Some("KOTLIN")128    }129    "fold" {130      some.fold({ 0 }) { it.length } shouldBe 6131      none.fold({ 0 }) { it.length } shouldBe 0132    }133    "flatMap" {134      some.flatMap { Some(it.toUpperCase()) } shouldBe Some("KOTLIN")135      none.flatMap { Some(it.toUpperCase()) } shouldBe None136    }137    "align" {138      some align some shouldBe Some(Ior.Both("kotlin", "kotlin"))139      some align none shouldBe Some(Ior.Left("kotlin"))140      none align some shouldBe Some(Ior.Right("kotlin"))141      none align none shouldBe None142      some.align(some) { "$it" } shouldBe Some("Ior.Both(kotlin, kotlin)")143      some.align(none) { "$it" } shouldBe Some("Ior.Left(kotlin)")144      none.align(some) { "$it" } shouldBe Some("Ior.Right(kotlin)")145      none.align(none) { "$it" } shouldBe None146      val nullable = null.some()147      some align nullable shouldBe Some(Ior.Both("kotlin", null))148      nullable align some shouldBe Some(Ior.Both(null, "kotlin"))149      nullable align nullable shouldBe Some(Ior.Both(null, null))150      some.align(nullable) { "$it" } shouldBe Some("Ior.Both(kotlin, null)")151      nullable.align(some) { "$it" } shouldBe Some("Ior.Both(null, kotlin)")152      nullable.align(nullable) { "$it" } shouldBe Some("Ior.Both(null, null)")153    }154    "filter" {155      some.filter { it == "java" } shouldBe None156      none.filter { it == "java" } shouldBe None157      some.filter { it.startsWith('k') } shouldBe Some("kotlin")158    }159    "filterNot" {160      some.filterNot { it == "java" } shouldBe Some("kotlin")161      none.filterNot { it == "java" } shouldBe None162      some.filterNot { it.startsWith('k') } shouldBe None163    }164    "filterIsInstance" {165      val someAny: Option<Any> = some166      someAny.filterIsInstance<String>() shouldBe Some("kotlin")167      someAny.filterIsInstance<Int>() shouldBe None168      val someNullableAny: Option<Any?> = null.some()169      someNullableAny.filterIsInstance<String?>() shouldBe Some(null)170      someNullableAny.filterIsInstance<String>() shouldBe None171      val noneAny: Option<Any> = none172      noneAny.filterIsInstance<String>() shouldBe None173      noneAny.filterIsInstance<Int>() shouldBe None174    }175    "exists" {176      some.exists { it.startsWith('k') } shouldBe true177      some.exists { it.startsWith('j') } shouldBe false178      none.exists { it.startsWith('k') } shouldBe false179    }180    "all" {181      some.all { it.startsWith('k') } shouldBe true182      some.all { it.startsWith('j') } shouldBe false183      none.all { it.startsWith('k') } shouldBe true184    }185    "orElse" {186      some.orElse { Some("java") } shouldBe Some("kotlin")187      none.orElse { Some("java") } shouldBe Some("java")188    }189    "toList" {190      some.toList() shouldBe listOf("kotlin")191      none.toList() shouldBe listOf()192    }193    "Iterable.firstOrNone" {194      val iterable = iterableOf(1, 2, 3, 4, 5, 6)195      iterable.firstOrNone() shouldBe Some(1)196      iterable.firstOrNone { it > 2 } shouldBe Some(3)197      iterable.firstOrNone { it > 7 } shouldBe None198      val emptyIterable = iterableOf<Int>()199      emptyIterable.firstOrNone() shouldBe None200      val nullableIterable1 = iterableOf(null, 2, 3, 4, 5, 6)201      nullableIterable1.firstOrNone() shouldBe Some(null)202      val nullableIterable2 = iterableOf(1, 2, 3, null, 5, null)203      nullableIterable2.firstOrNone { it == null } shouldBe Some(null)204    }205    "Collection.firstOrNone" {206      val list = listOf(1, 2, 3, 4, 5, 6)207      list.firstOrNone() shouldBe Some(1)208      val emptyList = emptyList<Int>()209      emptyList.firstOrNone() shouldBe None210      val nullableList = listOf(null, 2, 3, 4, 5, 6)211      nullableList.firstOrNone() shouldBe Some(null)212    }213    "Iterable.singleOrNone" {214      val iterable = iterableOf(1, 2, 3, 4, 5, 6)215      iterable.singleOrNone() shouldBe None216      iterable.singleOrNone { it > 2 } shouldBe None217      val singleIterable = iterableOf(3)218      singleIterable.singleOrNone() shouldBe Some(3)219      singleIterable.singleOrNone { it == 3 } shouldBe Some(3)220      val nullableSingleIterable1 = iterableOf<Int?>(null)221      nullableSingleIterable1.singleOrNone() shouldBe Some(null)222      val nullableSingleIterable2 = iterableOf(1, 2, 3, null, 5, 6)223      nullableSingleIterable2.singleOrNone { it == null } shouldBe Some(null)224      val nullableSingleIterable3 = iterableOf(1, 2, 3, null, 5, null)225      nullableSingleIterable3.singleOrNone { it == null } shouldBe None226    }227    "Collection.singleOrNone" {228      val list = listOf(1, 2, 3, 4, 5, 6)229      list.singleOrNone() shouldBe None230      val singleList = listOf(3)231      singleList.singleOrNone() shouldBe Some(3)232      val nullableSingleList = listOf(null)233      nullableSingleList.singleOrNone() shouldBe Some(null)234    }235    "Iterable.lastOrNone" {236      val iterable = iterableOf(1, 2, 3, 4, 5, 6)237      iterable.lastOrNone() shouldBe Some(6)238      iterable.lastOrNone { it < 4 } shouldBe Some(3)239      iterable.lastOrNone { it > 7 } shouldBe None240      val emptyIterable = iterableOf<Int>()241      emptyIterable.lastOrNone() shouldBe None242      val nullableIterable1 = iterableOf(1, 2, 3, 4, 5, null)243      nullableIterable1.lastOrNone() shouldBe Some(null)244      val nullableIterable2 = iterableOf(null, 2, 3, null, 5, 6)245      nullableIterable2.lastOrNone { it == null } shouldBe Some(null)246    }247    "Collection.lastOrNone" {248      val list = listOf(1, 2, 3, 4, 5, 6)249      list.lastOrNone() shouldBe Some(6)250      val emptyList = emptyList<Int>()251      emptyList.lastOrNone() shouldBe None252      val nullableList = listOf(1, 2, 3, 4, 5, null)253      nullableList.lastOrNone() shouldBe Some(null)254    }255    "Iterable.elementAtOrNone" {256      val iterable = iterableOf(1, 2, 3, 4, 5, 6)257      iterable.elementAtOrNone(index = 3 - 1) shouldBe Some(3)258      iterable.elementAtOrNone(index = -1) shouldBe None259      iterable.elementAtOrNone(index = 100) shouldBe None260      val nullableIterable = iterableOf(1, 2, null, 4, 5, 6)261      nullableIterable.elementAtOrNone(index = 3 - 1) shouldBe Some(null)262    }263    "Collection.elementAtOrNone" {264      val list = listOf(1, 2, 3, 4, 5, 6)265      list.elementAtOrNone(index = 3 - 1) shouldBe Some(3)266      list.elementAtOrNone(index = -1) shouldBe None267      list.elementAtOrNone(index = 100) shouldBe None268      val nullableList = listOf(1, 2, null, 4, 5, 6)269      nullableList.elementAtOrNone(index = 3 - 1) shouldBe Some(null)270    }271    "and" {272      val x = Some(2)273      val y = Some("Foo")274      x and y shouldBe Some("Foo")275      x and None shouldBe None276      None and x shouldBe None277      None and None shouldBe None278    }279    "or" {280      val x = Some(2)281      val y = Some(100)282      x or y shouldBe Some(2)283      x or None shouldBe Some(2)284      None or x shouldBe Some(2)285      None or None shouldBe None286    }287    "toLeftOption" {288      1.leftIor().leftOrNull() shouldBe 1289      2.rightIor().leftOrNull() shouldBe null290      (1 to 2).bothIor().leftOrNull() shouldBe 1291    }292    "pairLeft" {293      val some: Option<Int> = Some(2)294      val none: Option<Int> = None295      some.pairLeft("key") shouldBe Some("key" to 2)296      none.pairLeft("key") shouldBe None297    }298    "pairRight" {299      val some: Option<Int> = Some(2)300      val none: Option<Int> = None301      some.pairRight("right") shouldBe Some(2 to "right")302      none.pairRight("right") shouldBe None303    }304    "Option<Pair<L, R>>.toMap()" {305      val some: Option<Pair<String, String>> = Some("key" to "value")306      val none: Option<Pair<String, String>> = None307      some.toMap() shouldBe mapOf("key" to "value")308      none.toMap() shouldBe emptyMap()309    }310    "traverse should yield list of option" {311      val some: Option<String> = Some("value")312      val none: Option<String> = None313      some.traverse { listOf(it) } shouldBe listOf(Some("value"))314      none.traverse { listOf(it) } shouldBe emptyList()315    }316    "sequence should be consistent with traverse" {317      checkAll(Arb.option(Arb.int())) { option ->318        option.map { listOf(it) }.sequence() shouldBe option.traverse { listOf(it) }319      }320    }321    "traverseEither should yield either of option" {322      val some: Option<String> = Some("value")323      val none: Option<String> = None324      some.traverseEither { it.right() } shouldBe some.right()325      none.traverseEither { it.right() } shouldBe none.right()326    }327    "sequenceEither should be consistent with traverseEither" {328      checkAll(Arb.option(Arb.int())) { option ->329        option.map { it.right() }.sequenceEither() shouldBe option.traverseEither { it.right() }330      }331    }332    "traverseValidated should yield validated of option" {333      val some: Option<String> = Some("value")334      val none: Option<String> = None335      some.traverseValidated { it.valid() } shouldBe some.valid()336      none.traverseValidated { it.valid() } shouldBe none.valid()337    }338    "sequenceValidated should be consistent with traverseValidated" {339      checkAll(Arb.option(Arb.int())) { option ->340        option.map { it.valid() }.sequenceValidated() shouldBe option.traverseValidated { it.valid() }341      }342    }343    "catch should return Some(result) when f does not throw" {344      val recover: (Throwable) -> Option<Int> = { _ -> None}345      Option.catch(recover) { 1 } shouldBe Some(1)346    }347    "catch should return Some(recoverValue) when f throws" {348      val exception = Exception("Boom!")349      val recoverValue = 10350      val recover: (Throwable) -> Option<Int> = { _ -> Some(recoverValue) }351      Option.catch(recover) { throw exception } shouldBe Some(recoverValue)352    }353    "catch should return Some(result) when f does not throw" {354      Option.catch { 1 } shouldBe Some(1)355    }356    "catch should return None when f throws" {357      val exception = Exception("Boom!")358      Option.catch { throw exception } shouldBe None359    }360  }361}362// Utils363private fun <T> iterableOf(vararg elements: T): Iterable<T> = Iterable { iterator { yieldAll(elements.toList()) } }...

EngineTest.kt

Source:EngineTest.kt

1package no.ks.kes.test.example2import io.kotest.assertions.asClue3import io.kotest.assertions.fail4import io.kotest.assertions.failure5import io.kotest.assertions.throwables.shouldThrowExactly6import io.kotest.assertions.timing.eventually7import io.kotest.core.spec.style.StringSpec8import io.kotest.matchers.collections.beEmpty9import io.kotest.matchers.collections.shouldContain10import io.kotest.matchers.collections.shouldHaveAtLeastSize11import io.kotest.matchers.collections.shouldHaveSize12import io.kotest.matchers.should13import io.kotest.matchers.shouldBe14import io.kotest.matchers.throwable.shouldHaveMessage15import io.kotest.property.Arb16import io.kotest.property.arbitrary.UUIDVersion17import io.kotest.property.arbitrary.uuid18import io.kotest.property.checkAll19import kotlinx.coroutines.asCoroutineDispatcher20import kotlinx.coroutines.async21import kotlinx.coroutines.awaitAll22import no.ks.kes.lib.Projections23import no.ks.kes.lib.Sagas24import no.ks.kes.test.AggregateKey25import no.ks.kes.test.withKes26import java.util.*27import java.util.concurrent.Executors28import kotlin.time.*29@ExperimentalTime30class EngineTest : StringSpec({31    "Test command handler" {32        withKes(eventSerdes = Events.serdes, cmdSerdes = Cmds.serdes) { kes ->33            val engineCmdHandler = EngineCmdHandler(kes.aggregateRepository)34            val aggregateId = UUID.randomUUID()35            engineCmdHandler.handle(Cmds.Create(aggregateId)).asClue {36                it.id shouldBe aggregateId37                it.running shouldBe false38                it.startCount shouldBe 039            }40            eventually(3.toDuration(DurationUnit.SECONDS)) {41                kes.eventStream.get(AggregateKey(ENGINE_AGGREGATE_TYPE, aggregateId))?.asClue { events ->42                    events shouldHaveSize 143                    events[0].eventData::class.java shouldBe Events.Created::class.java44                } ?: fail("No events was found for aggregate")45            }46        }47    }48    "Test command handler using several threads" {49        withKes(eventSerdes = Events.serdes, cmdSerdes = Cmds.serdes) { kes ->50            val engineCmdHandler = EngineCmdHandler(kes.aggregateRepository)51            val aggregateId = UUID.randomUUID()52            engineCmdHandler.handle(Cmds.Create(aggregateId)).asClue {53                it.id shouldBe aggregateId54                it.running shouldBe false55                it.startCount shouldBe 056            }57            eventually(3.toDuration(DurationUnit.SECONDS)) {58                kes.eventStream.get(AggregateKey(ENGINE_AGGREGATE_TYPE, aggregateId))?.asClue { events ->59                    events shouldHaveSize 160                    events[0].eventData::class.java shouldBe Events.Created::class.java61                } ?: fail("No events was found for aggregate")62            }63            Executors.newFixedThreadPool(10).asCoroutineDispatcher().use { dispatcher ->64                awaitAll(65                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) },66                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) },67                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) },68                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) },69                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) },70                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) },71                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) },72                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) },73                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) },74                        async(dispatcher) { engineCmdHandler.handleUnsynchronized(Cmds.Start(aggregateId)) }75                )76            }77            eventually(3.toDuration(DurationUnit.SECONDS)) {78                kes.eventStream.get(AggregateKey(ENGINE_AGGREGATE_TYPE, aggregateId))?.asClue { writeEventWrappers ->79                    writeEventWrappers shouldHaveAtLeastSize 280                    val events = writeEventWrappers.map { it.eventData }.toList()81                    events.filterIsInstance<Events.Created>() shouldHaveSize 182                    // At this point we really don't know how many of these events was applied as EngineCmdHandler checks aggregate state before generating Started events83                    // As we are using the handleUnsynchronized function we can therefore not guarantee how many started events are generated84                    events.filterIsInstance<Events.Started>() shouldHaveAtLeastSize 185                } ?: fail("No events was found for aggregate")86            }87        }88    }89    "Test command handler by providing event and command types explicitly" {90        withKes(events = Events.all, cmds = Cmds.all) { kes ->91            val engineCmdHandler = EngineCmdHandler(kes.aggregateRepository)92            val aggregateId = UUID.randomUUID()93            engineCmdHandler.handle(Cmds.Create(aggregateId)).asClue {94                it.id shouldBe aggregateId95                it.running shouldBe false96                it.startCount shouldBe 097            }98            eventually(3.toDuration(DurationUnit.SECONDS)) {99                kes.eventStream.get(AggregateKey(ENGINE_AGGREGATE_TYPE, aggregateId))?.asClue { events ->100                    events shouldHaveSize 1101                    events[0].eventData::class.java shouldBe Events.Created::class.java102                } ?: fail("No events was found for aggregate")103            }104        }105    }106    "Test saga with timeout" {107        withKes(Events.serdes, Cmds.serdes) { kes ->108            val engineCmdHandler = EngineCmdHandler(kes.aggregateRepository)109            val commandQueue = kes.createCommandQueue(setOf(engineCmdHandler))110            Sagas.initialize(111                    eventSubscriberFactory = kes.subscriberFactory,112                    sagaRepository = kes.createSagaRepository(commandQueue),113                    sagas = setOf(EngineSaga),114                    commandQueue = commandQueue,115                    pollInterval = 1.seconds.toLongMilliseconds()116            ) {117                e -> failure("Failed to handle saga event", e)118            }119            val aggregateId = UUID.randomUUID()120            engineCmdHandler.handle(Cmds.Create(aggregateId)).asClue {121                it.id shouldBe aggregateId122                it.running shouldBe false123                it.startCount shouldBe 0124            }125            eventually(10.toDuration(DurationUnit.SECONDS)) {126                kes.eventStream.get(AggregateKey(ENGINE_AGGREGATE_TYPE, aggregateId))?.asClue { wrappers ->127                    val events = wrappers.map { it.eventData }.toList()128                    events.filterIsInstance<Events.Created>() shouldHaveSize 1129                    events.filterIsInstance<Events.Started>() shouldHaveSize 1130                    events.filterIsInstance<Events.Stopped>() shouldHaveSize 1131                } ?: fail("No events was found for aggregate")132                engineCmdHandler.handle(Cmds.Check(aggregateId)).asClue {133                    it.running shouldBe false134                    it.startCount shouldBe 1135                }136            }137        }138    }139    "Test using both projection and saga" {140        withKes(Events.serdes, Cmds.serdes) { kes ->141            val engineCmdHandler = EngineCmdHandler(kes.aggregateRepository)142            val commandQueue = kes.createCommandQueue(setOf(engineCmdHandler))143            val engineProjection = EnginesProjection()144            Sagas.initialize(145                    eventSubscriberFactory = kes.subscriberFactory,146                    sagaRepository = kes.createSagaRepository(commandQueue),147                    sagas = setOf(EngineSaga),148                    commandQueue = commandQueue,149                    pollInterval = 1.seconds.toLongMilliseconds()150            ) {151                e -> failure("Failed to handle saga event", e)152            }153            Projections.initialize(eventSubscriberFactory = kes.subscriberFactory,154                    projections = setOf(engineProjection),155                    projectionRepository = kes.projectionRepository,156                    subscriber = testCase.displayName157            ) { e ->158                failure("Failed during eventhandling in projection", e)159            }160            val aggregatesCreated = 10161            checkAll(iterations = aggregatesCreated, Arb.uuid(UUIDVersion.V4, false)) { aggregateId ->162                engineCmdHandler.handle(Cmds.Create(aggregateId)).asClue {163                    it.id shouldBe aggregateId164                    it.running shouldBe false165                    it.startCount shouldBe 0166                }167            }168            eventually(30.toDuration(DurationUnit.SECONDS)) {169                engineProjection.all shouldHaveSize aggregatesCreated170                engineProjection.allRunning should beEmpty()171                engineProjection.allStopped shouldHaveSize aggregatesCreated172            }173        }174    }175    "Test projection" {176        withKes(Events.serdes, Cmds.serdes) { kes ->177            val engineCmdHandler = EngineCmdHandler(kes.aggregateRepository)178            val engineProjection = EnginesProjection()179            Projections.initialize(180                    eventSubscriberFactory = kes.subscriberFactory,181                    projections = setOf(engineProjection),182                    projectionRepository = kes.projectionRepository,183                    subscriber = testCase.displayName184            ) { e ->185                failure("Failed during projection event handling", e)186            }187            val aggregateId = UUID.randomUUID()188            engineCmdHandler.handle(Cmds.Create(aggregateId)).asClue {189                it.id shouldBe aggregateId190                it.running shouldBe false191                it.startCount shouldBe 0192            }193            eventually(3.toDuration(DurationUnit.SECONDS)) {194                engineProjection.all shouldContain aggregateId195            }196        }197    }198    "Test projection when you have 1000 Created events" {199        withKes(Events.serdes, Cmds.serdes) { kes ->200            val engineCmdHandler = EngineCmdHandler(kes.aggregateRepository)201            val engineProjection = EnginesProjection()202            Projections.initialize(203                    eventSubscriberFactory = kes.subscriberFactory,204                    projections = setOf(engineProjection),205                    projectionRepository = kes.projectionRepository,206                    subscriber = testCase.displayName207            ) { e ->208                failure("Failed during projection event handling", e)209            }210            val aggregatesToCreate = 1000211            checkAll(aggregatesToCreate, Arb.uuid(UUIDVersion.V4, false)) { aggregateId ->212                engineCmdHandler.handle(Cmds.Create(aggregateId)).asClue {213                    it.id shouldBe aggregateId214                    it.running shouldBe false215                    it.startCount shouldBe 0216                }217            }218            eventually(3.toDuration(DurationUnit.SECONDS)) {219                engineProjection.all shouldHaveSize aggregatesToCreate220            }221        }222    }223    "Test issuing commands that are not init commands before the aggregate has been created" {224        withKes(Events.serdes, Cmds.serdes) { kes ->225            val engineCmdHandler = EngineCmdHandler(kes.aggregateRepository)226            checkAll(iterations = 100, Arb.uuid(UUIDVersion.V4, false)) { aggregateId ->227                shouldThrowExactly<IllegalStateException> {228                    // The Start command is not declared a init command in EngineCmdHandler and thus this command should rejected as the aggregate does not exist229                    engineCmdHandler.handle(Cmds.Start(aggregateId))230                } shouldHaveMessage "Aggregate $aggregateId does not exist, and cmd Start is not configured as an initializer. Consider adding an \"init\" configuration for this command."231            }232        }233    }234})...

filter.kt

Source:filter.kt

1package io.kotest.property.arbitrary2import io.kotest.property.Arb3import io.kotest.property.PropertyTesting4import io.kotest.property.RTree5import io.kotest.property.RandomSource6import io.kotest.property.Sample7import io.kotest.property.filter8/**9 * Returns a new [Arb] which takes its elements from the receiver and filters them using the supplied10 * predicate. This gen will continue to request elements from the underlying gen until one satisfies11 * the predicate.12 */13fun <A> Arb<A>.filter(predicate: (A) -> Boolean): Arb<A> = trampoline { sampleA ->14   object : Arb<A>() {15      override fun edgecase(rs: RandomSource): A? =16         sequenceOf(sampleA.value)17            .plus(generateSequence { this@filter.edgecase(rs) })18            .take(PropertyTesting.maxFilterAttempts)19            .filter(predicate)20            .firstOrNull()21      override fun sample(rs: RandomSource): Sample<A> {22         val sample = sequenceOf(sampleA).plus(this@filter.samples(rs)).filter { predicate(it.value) }.first()23         return Sample(sample.value, sample.shrinks.filter(predicate) ?: RTree({ sample.value }))24      }25   }26}27/**28 * @return a new [Arb] by filtering this arbs output by the negated function [f]29 */30fun <A> Arb<A>.filterNot(f: (A) -> Boolean): Arb<A> = filter { !f(it) }31/**32 * Create a new [Arb] by keeping only instances of B generated by this gen.33 * This is useful if you have a type hierarchy and only want to retain34 * a particular subtype.35 */36@Suppress("UNCHECKED_CAST")37inline fun <A, reified B : A> Arb<A>.filterIsInstance(): Arb<B> = filter { it is B }.map { it as B }...

Arb.filterIsInstance

Using AI Code Generation

1val arbString = Arb.string()2val arbInt = Arb.int()3val arbIntOrString = arbString.or(arbInt)4val arbIntOrString2 = arbString.or(arbInt)5val arbIntOrString3 = arbIntOrString.or(arbIntOrString2)6val arbIntOrString4 = arbIntOrString3.filterIsInstance<String>()7val arbIntOrString5 = arbIntOrString4.filterIsInstance<Int>()8val arbIntOrString6 = arbIntOrString5.filterIsInstance<String>()9val arbIntOrString7 = arbIntOrString6.filterIsInstance<Int>()10val arbIntOrString8 = arbIntOrString7.filterIsInstance<String>()11val arbIntOrString9 = arbIntOrString8.filterIsInstance<Int>()12val arbIntOrString10 = arbIntOrString9.filterIsInstance<String>()13val arbIntOrString11 = arbIntOrString10.filterIsInstance<Int>()14val arbIntOrString12 = arbIntOrString11.filterIsInstance<String>()15val arbIntOrString13 = arbIntOrString12.filterIsInstance<Int>()16val arbIntOrString14 = arbIntOrString13.filterIsInstance<String>()17val arbIntOrString15 = arbIntOrString14.filterIsInstance<Int>()18val arbIntOrString16 = arbIntOrString15.filterIsInstance<String>()19val arbIntOrString17 = arbIntOrString16.filterIsInstance<Int>()20val arbIntOrString18 = arbIntOrString17.filterIsInstance<String>()21val arbIntOrString19 = arbIntOrString18.filterIsInstance<Int>()22val arbIntOrString20 = arbIntOrString19.filterIsInstance<String>()23val arbIntOrString21 = arbIntOrString20.filterIsInstance<Int>()24val arbIntOrString22 = arbIntOrString21.filterIsInstance<String>()25val arbIntOrString23 = arbIntOrString22.filterIsInstance<Int>()26val arbIntOrString24 = arbIntOrString23.filterIsInstance<String>()27val arbIntOrString25 = arbIntOrString24.filterIsInstance<Int>()28val arbIntOrString26 = arbIntOrString25.filterIsInstance<String>()29val arbIntOrString27 = arbIntOrString26.filterIsInstance<Int>()30val arbIntOrString28 = arbIntOrString27.filterIsInstance<String>()

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.