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

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

KotestHelpers.kt

Source:KotestHelpers.kt

1package io.provenance.scope.loan.test2import com.google.protobuf.InvalidProtocolBufferException3import com.google.protobuf.Timestamp4import com.google.protobuf.util.Timestamps5import io.kotest.matchers.Matcher6import io.kotest.matchers.MatcherResult7import io.kotest.matchers.should8import io.kotest.matchers.shouldBe9import io.kotest.matchers.types.beInstanceOf10import io.kotest.property.Arb11import io.kotest.property.arbitrary.Codepoint12import io.kotest.property.arbitrary.UUIDVersion13import io.kotest.property.arbitrary.alphanumeric14import io.kotest.property.arbitrary.bind15import io.kotest.property.arbitrary.boolean16import io.kotest.property.arbitrary.filter17import io.kotest.property.arbitrary.filterNot18import io.kotest.property.arbitrary.int19import io.kotest.property.arbitrary.list20import io.kotest.property.arbitrary.long21import io.kotest.property.arbitrary.map22import io.kotest.property.arbitrary.pair23import io.kotest.property.arbitrary.set24import io.kotest.property.arbitrary.string25import io.kotest.property.arbitrary.uInt26import io.kotest.property.arbitrary.uuid27import io.provenance.scope.loan.utility.ContractEnforcement28import io.provenance.scope.loan.utility.ContractViolation29import io.provenance.scope.loan.utility.ContractViolationException30import io.provenance.scope.loan.utility.ContractViolationMap31import io.provenance.scope.loan.utility.UnexpectedContractStateException32import tech.figure.servicing.v1beta1.LoanStateOuterClass.LoanStateMetadata33import java.time.Instant34import tech.figure.util.v1beta1.Checksum as FigureTechChecksum35import tech.figure.util.v1beta1.UUID as FigureTechUUID36/**37 * Generators of [Arb]itrary instances.38 */39internal object LoanPackageArbs {40    /* Primitives */41    val anyNonEmptyString: Arb<String> = Arb.string().filter { it.isNotBlank() }42    val anyNonUuidString: Arb<String> = Arb.string().filterNot { it.length == 36 }43    val anyUli: Arb<String> = Arb.string(minSize = 23, maxSize = 45, codepoints = Codepoint.alphanumeric()) // TODO: Is this correct?44    val anyNonUliString: Arb<String> = Arb.string().filterNot { it.length in 23..45 } // TODO: Should be complement of anyUli45    /* Contract requirements */46    val anyContractViolation: Arb<ContractViolation> = Arb.string()47    val anyContractEnforcement: Arb<ContractEnforcement> = Arb.bind(48        Arb.boolean(),49        Arb.string(),50    ) { requirement, violationReport ->51        ContractEnforcement(requirement, violationReport)52    }53    val anyContractViolationMap: Arb<ContractViolationMap> = Arb.bind(54        Arb.list(anyContractViolation),55        Arb.list(Arb.uInt()),56    ) { violationList, countList ->57        violationList.zip(countList).toMap().toMutableMap()58    }59    /* Protobufs */60    val anyValidChecksum: Arb<FigureTechChecksum> = Arb.bind(61        anyNonEmptyString,62        Arb.string(),63    ) { checksumValue, algorithmType ->64        FigureTechChecksum.newBuilder().apply {65            checksum = checksumValue66            algorithm = algorithmType67        }.build()68    }69    val anyUuid: Arb<FigureTechUUID> = Arb.uuid(UUIDVersion.V4).map { arbUuidV4 ->70        FigureTechUUID.newBuilder().apply {71            value = arbUuidV4.toString()72        }.build()73    }74    val anyValidTimestamp: Arb<Timestamp> = anyTimestampComponents.map { (seconds, nanoSeconds) ->75        Timestamp.newBuilder().also { timestampBuilder ->76            timestampBuilder.seconds = seconds77            timestampBuilder.nanos = nanoSeconds78        }.build()79    }80    val anyValidLoanState: Arb<LoanStateMetadata> = Arb.bind(81        anyUuid,82        anyValidChecksum,83        anyValidTimestamp,84        anyNonEmptyString,85    ) { uuid, checksum, effectiveTime, uri ->86        LoanStateMetadata.newBuilder().also { loanStateBuilder ->87            loanStateBuilder.id = uuid88            loanStateBuilder.checksum = checksum89            loanStateBuilder.effectiveTime = effectiveTime90            loanStateBuilder.uri = uri91        }.build()92    }93    fun loanStateSet(size: Int, slippage: Int = 10): Arb<List<LoanStateMetadata>> =94        /** Since we need each *property* to be unique, we must fix the set size & construct the arbs from scratch with primitives */95        Arb.bind(96            Arb.set(gen = Arb.uuid(UUIDVersion.V4), size = size, slippage = slippage).map { it.toList() },97            Arb.set(gen = anyNonEmptyString, size = size, slippage = slippage).map { it.toList() },98            Arb.set(gen = anyNonEmptyString, size = size, slippage = slippage).map { it.toList() },99            Arb.set(gen = anyPastNonEpochTimestampComponents, size = size, slippage = slippage).map { it.toList() },100        ) { randomIds, randomChecksums, randomUris, randomTimestamps ->101            randomIds.indices.map { i ->102                LoanStateMetadata.newBuilder().also { loanStateBuilder ->103                    loanStateBuilder.id = FigureTechUUID.newBuilder().also { uuidBuilder ->104                        uuidBuilder.value = randomIds[i].toString()105                    }.build()106                    loanStateBuilder.checksum = FigureTechChecksum.newBuilder().also { checksumBuilder ->107                        checksumBuilder.checksum = randomChecksums[i]108                    }.build()109                    loanStateBuilder.uri = randomUris[i]110                    loanStateBuilder.effectiveTime = Timestamp.newBuilder().also { timestampBuilder ->111                        timestampBuilder.seconds = randomTimestamps[i].first112                        timestampBuilder.nanos = randomTimestamps[i].second113                    }.build()114                }.build()115            }116        }117}118private val anyTimestampComponents: Arb<Pair<Long, Int>> = Arb.pair(119    Arb.long(min = Timestamps.MIN_VALUE.seconds, max = Timestamps.MAX_VALUE.seconds),120    Arb.int(min = Timestamps.MIN_VALUE.nanos, max = Timestamps.MAX_VALUE.nanos),121)122private val anyPastNonEpochTimestampComponents: Arb<Pair<Long, Int>> = Instant.now().let { now ->123    Arb.pair(124        Arb.long(min = Timestamps.MIN_VALUE.seconds, max = now.epochSecond),125        Arb.int(min = Timestamps.MIN_VALUE.nanos + 1, max = now.nano),126    )127}128/**129 * Defines a custom [Matcher] to check the violation count value in a [ContractViolationException].130 */131internal fun throwViolationCount(violationCount: UInt) = Matcher<ContractViolationException> { exception ->132    { count: UInt ->133        if (count == 1U) {134            "$count violation"135        } else {136            "$count violations"137        }138    }.let { violationPrinter: (UInt) -> String ->139        return@Matcher MatcherResult(140            exception.overallViolationCount == violationCount,141            {142                "Exception had ${violationPrinter(exception.overallViolationCount)} " +143                    "but we expected ${violationPrinter(violationCount)}"144            },145            { "Exception should not have ${violationPrinter(violationCount)}" },146        )147    }148}149/**150 * Wraps the custom matcher [throwViolationCount] following the style outlined in the151 * [Kotest documentation](https://kotest.io/docs/assertions/custom-matchers.html#extension-variants).152 */153internal infix fun ContractViolationException.shouldHaveViolationCount(violationCount: UInt) = apply {154    this should throwViolationCount(violationCount)155}156internal infix fun UnexpectedContractStateException.shouldBeParseFailureFor(classifier: String) = apply {157    this.cause should beInstanceOf<InvalidProtocolBufferException>()158    this.message shouldBe "Could not unpack as class $classifier"159}...

BatchMigrationGenerator.kt

Source:BatchMigrationGenerator.kt

1package liquibase.ext.generators2import io.kotest.property.Arb3import io.kotest.property.Exhaustive4import io.kotest.property.RandomSource5import io.kotest.property.arbitrary.arbitrary6import io.kotest.property.arbitrary.filter7import io.kotest.property.arbitrary.filterNot8import io.kotest.property.arbitrary.int9import io.kotest.property.arbitrary.list10import io.kotest.property.arbitrary.long11import io.kotest.property.arbitrary.map12import io.kotest.property.arbitrary.next13import io.kotest.property.arbitrary.orNull14import io.kotest.property.exhaustive.azstring15import io.kotest.property.exhaustive.exhaustive16import io.kotest.property.exhaustive.merge17import liquibase.ext.changes.BatchMigrationChange18import java.sql.RowIdLifetime19object BatchMigrationGenerator {20    val identifierGen = { min: Int -> Exhaustive.azstring(min..16).toArb() }21    val rowIdLifeTimeInvalidGenerator = listOf(22        RowIdLifetime.ROWID_UNSUPPORTED,23        RowIdLifetime.ROWID_VALID_OTHER,24        RowIdLifetime.ROWID_VALID_SESSION,25        RowIdLifetime.ROWID_VALID_TRANSACTION26    ).exhaustive()27    val rowIdLifeTimeGenerator = listOf(28        RowIdLifetime.ROWID_VALID_FOREVER,29    ).exhaustive().merge(rowIdLifeTimeInvalidGenerator)30    val validMigrationGenerator = arbitrary { rs: RandomSource ->31        val change = BatchMigrationChange()32        val colCount = Arb.int(1, 5).next(rs)33        val colGen = fixedColumnListNoDupsGenerator(colCount, colCount)34        change.tableName = identifierGen(1).next(rs)35        change.chunkSize = Arb.long(1L, 10000L).next(rs)36        val from = colGen.next(rs)37        val fromSet = from.toSet()38        change.fromColumns = from.toColumnList()39        // Make sure we do not have overlapping or crossing columns between from and to40        val to = colGen.filterNot { l -> fromSet.any { it in l.toSet() } }.next(rs)41        change.toColumns = to.toColumnList()42        change43    }44    val validMigrationWithSleepsGenerator = arbitrary { rs: RandomSource ->45        val mig = validMigrationGenerator.next(rs)46        mig.sleepTime = Arb.long(0L, 10000L).orNull().next(rs)47        mig48    }49    val sampleMigrationGenerator = arbitrary { rs: RandomSource ->50        val change = BatchMigrationChange()51        change.tableName = identifierGen(1).orNull().next(rs)52        change.chunkSize = Arb.long(-100L, 10000L).orNull().next(rs)53        val upperBound = Arb.int(0, 5).next(rs)54        val minBound = Arb.int(0, 5).filter { it <= upperBound }.next(rs)55        change.fromColumns = fixedColumnStringSequenceGenerator(minBound, upperBound).orNull().next(rs)56        change.toColumns = fixedColumnStringSequenceGenerator(minBound, upperBound).orNull().next(rs)57        change.sleepTime = Arb.long(-100L, 10000L).orNull().next(rs)58        change59    }60    val invalidMigrationGenerator = sampleMigrationGenerator.filter { c: BatchMigrationChange ->61        val simplePredicate = c.fromColumns.isNullOrEmpty() ||62            c.toColumns.isNullOrEmpty() || (c.chunkSize ?: -1L) <= 0L || c.sleepTime?.let { it < 0L } ?: false63        if (simplePredicate) return@filter true64        else {65            val from = c.fromColumns!!.split(",")66            val to = c.toColumns!!.split(",").toSet()67            // check whether from and to columns are equal somewhere or crossing68            // check whether any to column is in primary keys69            from.size != to.size || from.any { it in to }70        }71    }72    private fun List<String>.toColumnList(): String = joinToString(separator = ",") { it }73    private val fixedColumnListGenerator = { lowerBound: Int, inclusiveUpperBound: Int ->74        Arb.list(identifierGen(1), IntRange(lowerBound, inclusiveUpperBound))75    }76    private val fixedColumnListNoDupsGenerator = { lowerBound: Int, inclusiveUpperBound: Int ->77        fixedColumnListGenerator(lowerBound, inclusiveUpperBound).filterNot { l ->78            l.toSet().size != l.size79        }80    }81    private val fixedColumnStringSequenceGenerator = { lowerBound: Int, inclusiveUpperBound: Int ->82        fixedColumnListGenerator(lowerBound, inclusiveUpperBound).map { l -> l.joinToString(",") { it } }83    }84}...

DigitRuleTests.kt

Source:DigitRuleTests.kt

1package com.github.mpe85.grampa.grammar2import com.github.mpe85.grampa.legalCodePoints3import com.github.mpe85.grampa.parser.Parser4import com.ibm.icu.lang.UCharacter5import com.ibm.icu.lang.UCharacter.toString6import io.kotest.core.spec.style.StringSpec7import io.kotest.matchers.shouldBe8import io.kotest.property.Arb9import io.kotest.property.arbitrary.char10import io.kotest.property.arbitrary.filter11import io.kotest.property.arbitrary.filterNot12import io.kotest.property.checkAll13class DigitRuleTests : StringSpec({14    "Digit rule matches all digit characters" {15        Parser(object : AbstractGrammar<Unit>() {16            override fun start() = digit()17        }).apply {18            checkAll(Arb.char().filter { Character.isDigit(it) }) { ch ->19                run(ch.toString()).apply {20                    matched shouldBe true21                    matchedEntireInput shouldBe true22                    matchedInput shouldBe ch.toString()23                    restOfInput shouldBe ""24                }25            }26        }27    }28    "Digit rule matches all digit codepoints" {29        Parser(object : AbstractGrammar<Unit>() {30            override fun start() = digit()31        }).apply {32            checkAll(legalCodePoints().filter { UCharacter.isDigit(it.value) }) { cp ->33                run(toString(cp.value)).apply {34                    matched shouldBe true35                    matchedEntireInput shouldBe true36                    matchedInput shouldBe toString(cp.value)37                    restOfInput shouldBe ""38                }39            }40        }41    }42    "Digit rule does not match non-digit characters" {43        Parser(object : AbstractGrammar<Unit>() {44            override fun start() = digit()45        }).apply {46            checkAll(Arb.char().filterNot { Character.isDigit(it) }) { ch ->47                run(ch.toString()).apply {48                    matched shouldBe false49                    matchedEntireInput shouldBe false50                    matchedInput shouldBe null51                    restOfInput shouldBe ch.toString()52                }53            }54        }55    }56    "Digit rule does not match non-digit codepoints" {57        Parser(object : AbstractGrammar<Unit>() {58            override fun start() = digit()59        }).apply {60            checkAll(legalCodePoints().filterNot { UCharacter.isDigit(it.value) }) { cp ->61                run(toString(cp.value)).apply {62                    matched shouldBe false63                    matchedEntireInput shouldBe false64                    matchedInput shouldBe null65                    restOfInput shouldBe toString(cp.value)66                }67            }68        }69    }70    "Digit rule does not match empty input" {71        Parser(object : AbstractGrammar<Unit>() {72            override fun start() = digit()73        }).run("").apply {74            matched shouldBe false75            matchedEntireInput shouldBe false76            matchedInput shouldBe null77            restOfInput shouldBe ""78        }79    }80})...

Arb.kt

Source:Arb.kt

1package io.github.nomisrev2import io.kotest.property.Arb3import io.kotest.property.arbitrary.boolean4import io.kotest.property.arbitrary.choice5import io.kotest.property.arbitrary.constant6import io.kotest.property.arbitrary.double7import io.kotest.property.arbitrary.filterNot8import io.kotest.property.arbitrary.float9import io.kotest.property.arbitrary.int10import io.kotest.property.arbitrary.list11import io.kotest.property.arbitrary.long12import io.kotest.property.arbitrary.map13import io.kotest.property.arbitrary.string14import kotlinx.serialization.SerializationStrategy15import kotlinx.serialization.json.Json16import kotlinx.serialization.json.JsonArray17import kotlinx.serialization.json.JsonElement18import kotlinx.serialization.json.JsonNull19import kotlinx.serialization.json.JsonObject20import kotlinx.serialization.json.JsonPrimitive21import kotlinx.serialization.serializer22fun Arb.Companion.street(): Arb<Street> =23  Arb.string().map(::Street)24fun Arb.Companion.city(): Arb<City> =25  Arb.list(street()).map(::City)26fun Arb.Companion.jsInt(): Arb<JsonPrimitive> =27  int().map(::JsonPrimitive)28fun Arb.Companion.jsLong(): Arb<JsonPrimitive> =29  long().map(::JsonPrimitive)30fun Arb.Companion.jsFloat(): Arb<JsonPrimitive> =31  float().filterNot(Float::isNaN).map(::JsonPrimitive)32fun Arb.Companion.jsDouble(): Arb<JsonPrimitive> =33  double().filterNot(Double::isNaN).map(::JsonPrimitive)34fun Arb.Companion.jsString(): Arb<JsonPrimitive> =35  Arb.string().map(::JsonPrimitive)36fun Arb.Companion.jsBoolean(): Arb<JsonPrimitive> =37  boolean().map(::JsonPrimitive)38fun Arb.Companion.jsNull(): Arb<JsonNull> =39  constant(JsonNull)40private fun genJson(): Arb<JsonElement> =41  Arb.choice(Arb.jsInt(), Arb.jsLong(), Arb.jsDouble(), Arb.jsString(), Arb.jsNull())42fun Arb.Companion.jsArray(): Arb<JsonArray> =43  list(genJson()).map(::JsonArray)44fun <T> Arb.Companion.jsArray(valid: Arb<T>, EN: SerializationStrategy<T>): Arb<JsonArray> =45  list(valid).map { list -> JsonArray(list.map { elem -> Json.encodeToJsonElement(EN, elem) }) }46inline fun <reified T> Arb.Companion.jsArray(valid: Arb<T>): Arb<JsonArray> =47  jsArray(valid, serializer())48fun Arb.Companion.jsObject(): Arb<JsonObject> =49  map(Arb.string(), genJson()).map(::JsonObject)50fun <T> Arb.Companion.json(valid: Arb<T>, EN: SerializationStrategy<T>): Arb<JsonElement> =51  valid.map { Json.encodeToJsonElement(EN, it) }52inline fun <reified T> Arb.Companion.json(valid: Arb<T>): Arb<JsonElement> =53  json(valid, serializer())54fun Arb.Companion.json(): Arb<JsonElement> = choice(55  Arb.jsInt(),56  Arb.jsLong(),57  Arb.jsDouble(),58  Arb.jsString(),59  Arb.jsNull(),60  Arb.jsArray(),61  Arb.jsObject(),62)...

LeapYearTest.kt

Source:LeapYearTest.kt

1import io.kotest.core.spec.style.ExpectSpec2import io.kotest.matchers.shouldBe3import io.kotest.property.Arb4import io.kotest.property.arbitrary.filter5import io.kotest.property.arbitrary.filterNot6import io.kotest.property.arbitrary.int7import io.kotest.property.checkAll8class LeapYearTest : ExpectSpec({9    context("A year is not a leap year") {10        expect("if not divisible by 4") {11            checkAll(Arb.int().filterNot { it isDivisibleBy 4 }) { year ->12                isLeapYear(year) shouldBe false13            }14        }15        expect("if divisible by 100 but not by 400") {16            checkAll(Arb.int().filter { (it isDivisibleBy 100) && !(it isDivisibleBy 400) }) { year ->17                isLeapYear(year) shouldBe false18            }19        }20    }21    context("A year is a leap year") {22        expect("if divisible by 4 but not by 100") {23            checkAll(Arb.int().filter { (it isDivisibleBy 4)  && !(it isDivisibleBy 100) }) { year ->24                isLeapYear(year) shouldBe true25            }26        }27        expect("if divisible by 400") {28            checkAll(Arb.int().filter { it isDivisibleBy 400 }) { year ->29                isLeapYear(year) shouldBe true30            }31        }32    }33})...

SimpleAuthToken.kt

Source:SimpleAuthToken.kt

1package uk.co.appsplus.bootstrap.testing.arbs.ext2import android.annotation.SuppressLint3import io.kotest.property.Arb4import io.kotest.property.arbitrary.*5import uk.co.appsplus.bootstrap.network.models.SimpleAuthToken6import java.util.*7@SuppressLint("NewApi")8fun Arb.Companion.simpleAuthToken(): Arb<SimpleAuthToken> {9    return Arb.bind(10        Arb.string().filterNot { it.isEmpty() },11        Arb.string().filterNot { it.isEmpty() }12    ) { accessToken, refreshToken ->13        val encoder = Base64.getEncoder()14        SimpleAuthToken(15            encoder.encodeToString(accessToken.toByteArray()),16            encoder.encodeToString(refreshToken.toByteArray())17        )18    }19}...

PagingState.kt

Source:PagingState.kt

1package uk.co.appsplus.bootstrap.testing.arbs.ext2import io.kotest.property.Arb3import io.kotest.property.arbitrary.enum4import io.kotest.property.arbitrary.filterNot5import io.kotest.property.arbitrary.of6import uk.co.appsplus.bootstrap.ui.pagination.PagingState7fun Arb.Companion.loadingState(8    onlyStates: List<PagingState>? = null,9    removedStates: List<PagingState> = emptyList()10): Arb<PagingState> {11    return onlyStates?.let {12        Arb.of(it)13    } ?: Arb.enum<PagingState>()14        .filterNot { it in removedStates }15}...

Arbs.kt

Source:Arbs.kt

1import io.kotest.property.Arb2import io.kotest.property.arbitrary.double3import io.kotest.property.arbitrary.filterNot4import io.kotest.property.arbitrary.map5// Delete when DigDecimal Arb is fixed on kotest side6val myBigDecimals = Arb.double()7    .filterNot { it in setOf(Double.NaN, Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY) }8    .map { it.toBigDecimal() }...

Arb.filterNot

Using AI Code Generation

1val list = listOf(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)2val filteredList = Arb.filterNot(list) { it % 2 == 0 }3println(filteredList)4Related Posts: Kotlin | filterNotNull() method5Kotlin | filterIsInstance() method6Kotlin | filterIsInstance() method7Kotlin | filterNotNull() method8Kotlin | filterIndexed() method9Kotlin | filterIndexedTo() method10Kotlin | filterIsInstanceTo() method11Kotlin | filterNotNullTo() method12Kotlin | filterNotTo() method13Kotlin | filterTo() method14Kotlin | filterIndexedNotNull() method15Kotlin | filterIndexedNotNullTo() method16Kotlin | filterIndexedTo() method17Kotlin | filterIndexedNotNullTo() method18Kotlin | filterIndexedNotNull() method19Kotlin | filterNotNullTo() method20Kotlin | filterNotTo() method21Kotlin | filterTo() method22Kotlin | filterNotNullTo() method23Kotlin | filterIndexedTo() method24Kotlin | filterNotNull() method25Kotlin | filterNotNullTo() method26Kotlin | filterIndexedNotNull() method27Kotlin | filterIndexedNotNullTo() method28Kotlin | filterIndexedTo() method29Kotlin | filterIndexedNotNullTo() method30Kotlin | filterIndexedNotNull() method31Kotlin | filterIndexedNotNullTo() method32Kotlin | filterIndexedTo() method33Kotlin | filterIndexedNotNullTo() method34Kotlin | filterIndexedNotNull() method35Kotlin | filterIndexedNotNullTo() method36Kotlin | filterIndexedTo() method37Kotlin | filterIndexedNotNullTo() method38Kotlin | filterIndexedNotNull() method

Arb.filterNot

Using AI Code Generation

1@DisplayName("Arb.filterNot() method")2class ArbFilterNotTest : StringSpec({3    val evenNumbers = Arb.list(Arb.int(0..100)).filterNot { it % 2 == 1 }4    "Arb.filterNot() method" {5        forAll(evenNumbers) {6            it.all { it % 2 == 0 }7        }8    }9})

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