# How to use increasing class of io.kotest.matchers.collections package

Best Kotest code snippet using io.kotest.matchers.collections.increasing

CollectionMatchersTest.kt

Source:CollectionMatchersTest.kt

`...200 items.shouldNotBeSortedBy { it.second }201 }202 }203 "shouldBeIncreasing" should {204 "test that a collection is monotonically increasing" {205 listOf(1, 2, 2, 3) shouldBe monotonicallyIncreasing<Int>()206 listOf(6, 5) shouldNotBe monotonicallyIncreasing<Int>()207 listOf(1, 2, 2, 3).shouldBeMonotonicallyIncreasing()208 listOf(6, 5).shouldNotBeMonotonicallyIncreasing()209 }210 "test that a collection is monotonically increasing according to comparator" {211 val comparator = Comparator(desc)212 listOf(3, 2, 2, 1) shouldBe monotonicallyIncreasingWith(comparator)213 listOf(5, 6) shouldNotBe monotonicallyIncreasingWith(comparator)214 listOf(3, 2, 2, 1).shouldBeMonotonicallyIncreasingWith(comparator)215 listOf(5, 6).shouldNotBeMonotonicallyIncreasingWith(comparator)216 }217 "test that a collection is strictly increasing" {218 listOf(1, 2, 3) shouldBe strictlyIncreasing<Int>()219 listOf(1, 2, 2, 3) shouldNotBe strictlyIncreasing<Int>()220 listOf(6, 5) shouldNotBe strictlyIncreasing<Int>()221 listOf(1, 2, 3).shouldBeStrictlyIncreasing()222 listOf(1, 2, 2, 3).shouldNotBeStrictlyIncreasing()223 listOf(6, 5).shouldNotBeStrictlyIncreasing()224 }225 "test that a collection is strictly increasing according to comparator" {226 val comparator = Comparator(desc)227 listOf(3, 2, 1) shouldBe strictlyIncreasingWith(comparator)228 listOf(3, 2, 2, 1) shouldNotBe strictlyIncreasingWith(comparator)229 listOf(5, 6) shouldNotBe strictlyIncreasingWith(comparator)230 listOf(3, 2, 1).shouldBeStrictlyIncreasingWith(comparator)231 listOf(3, 2, 2, 1).shouldNotBeStrictlyIncreasingWith(comparator)232 listOf(5, 6).shouldNotBeStrictlyIncreasingWith(comparator)233 }234 }235 "shouldBeDecreasing" should {236 "test that a collection is monotonically decreasing" {237 listOf(3, 2, 2, -4) shouldBe monotonicallyDecreasing<Int>()238 listOf(5, 6) shouldNotBe monotonicallyDecreasing<Int>()239 listOf(3, 2, 2, -4).shouldBeMonotonicallyDecreasing()...`

Chap5.kt

Source:Chap5.kt

`...155 test(::functionalWay, assertFunctionalWay)156 test(::realFunctionalWay, assertRealFunctionalWay)157 }158 "Example 5-16" {159 println("increasing list")160 testBigIntList(161 bigIntList = (1..10000000).toList(),162 assertImperativeWay = { millis: Long -> millis.shouldBeLessThanOrEqual(1) },163 assertFunctionalWay = { millis: Long -> millis.shouldBeGreaterThan(100) },164 assertRealFunctionalWay = { millis: Long -> millis.shouldBeLessThan(10) },165 )166 println("\ndecreasing list")167 testBigIntList(168 bigIntList = (10000000 downTo 1).toList(),169 assertImperativeWay = { millis: Long -> millis.shouldBeLessThanOrEqual(1) },170 assertFunctionalWay = { millis: Long -> millis.shouldBeGreaterThan(100) }, // ì functionalWayë§ 100msê° ëì§?171 assertRealFunctionalWay = { millis: Long -> millis.shouldBeLessThanOrEqual(1) },172 )173 }...`

CollectionMatchers.kt

Source:CollectionMatchers.kt

`...91 else -> ". Element \${failure.value.second} at index \${failure.index + 1} was not monotonically increased from previous element."92 }93 return MatcherResult(94 failure == null,95 { "List [\$snippet] should be monotonically increasing\$elementMessage" },96 { "List [\$snippet] should not be monotonically increasing" }97 )98}99fun <T : Comparable<T>> beMonotonicallyDecreasing(): Matcher<List<T>> = monotonicallyDecreasing()100fun <T : Comparable<T>> monotonicallyDecreasing(): Matcher<List<T>> = object : Matcher<List<T>> {101 override fun test(value: List<T>): MatcherResult {102 return testMonotonicallyDecreasingWith(value,103 Comparator { a, b -> a.compareTo(b) })104 }105}106fun <T> beMonotonicallyDecreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = monotonicallyDecreasingWith(107 comparator)108fun <T> monotonicallyDecreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = object : Matcher<List<T>> {109 override fun test(value: List<T>): MatcherResult {110 return testMonotonicallyDecreasingWith(value, comparator)111 }112}113private fun <T> testMonotonicallyDecreasingWith(value: List<T>, comparator: Comparator<in T>): MatcherResult {114 val failure = value.zipWithNext().withIndex().find { (_, pair) -> comparator.compare(pair.first, pair.second) < 0 }115 val snippet = value.show().value116 val elementMessage = when (failure) {117 null -> ""118 else -> ". Element \${failure.value.second} at index \${failure.index + 1} was not monotonically decreased from previous element."119 }120 return MatcherResult(121 failure == null,122 { "List [\$snippet] should be monotonically decreasing\$elementMessage" },123 { "List [\$snippet] should not be monotonically decreasing" }124 )125}126fun <T : Comparable<T>> beStrictlyIncreasing(): Matcher<List<T>> = strictlyIncreasing()127fun <T : Comparable<T>> strictlyIncreasing(): Matcher<List<T>> = object : Matcher<List<T>> {128 override fun test(value: List<T>): MatcherResult {129 return testStrictlyIncreasingWith(value, Comparator { a, b -> a.compareTo(b) })130 }131}132fun <T> beStrictlyIncreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = strictlyIncreasingWith(133 comparator)134fun <T> strictlyIncreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = object : Matcher<List<T>> {135 override fun test(value: List<T>): MatcherResult {136 return testStrictlyIncreasingWith(value, comparator)137 }138}139private fun <T> testStrictlyIncreasingWith(value: List<T>, comparator: Comparator<in T>): MatcherResult {140 val failure = value.zipWithNext().withIndex().find { (_, pair) -> comparator.compare(pair.first, pair.second) >= 0 }141 val snippet = value.show().value142 val elementMessage = when (failure) {143 null -> ""144 else -> ". Element \${failure.value.second} at index \${failure.index + 1} was not strictly increased from previous element."145 }146 return MatcherResult(147 failure == null,148 { "List [\$snippet] should be strictly increasing\$elementMessage" },149 { "List [\$snippet] should not be strictly increasing" }150 )151}152fun <T : Comparable<T>> beStrictlyDecreasing(): Matcher<List<T>> = strictlyDecreasing()153fun <T : Comparable<T>> strictlyDecreasing(): Matcher<List<T>> = object : Matcher<List<T>> {154 override fun test(value: List<T>): MatcherResult {155 return testStrictlyDecreasingWith(value, Comparator { a, b -> a.compareTo(b) })156 }157}158fun <T> beStrictlyDecreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = strictlyDecreasingWith(159 comparator)160fun <T> strictlyDecreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = object : Matcher<List<T>> {161 override fun test(value: List<T>): MatcherResult {162 return testStrictlyDecreasingWith(value, comparator)163 }...`

increasing.kt

Source:increasing.kt

`...108 else -> ". Element \${failure.value.second} at index \${failure.index + 1} was not strictly increased from previous element."109 }110 return MatcherResult(111 failure == null,112 { "List [\$snippet] should be strictly increasing\$elementMessage" },113 { "List [\$snippet] should not be strictly increasing" }114 )115}116fun <T : Comparable<T>> beMonotonicallyIncreasing(): Matcher<List<T>> = monotonicallyIncreasing()117fun <T : Comparable<T>> monotonicallyIncreasing(): Matcher<List<T>> = object : Matcher<List<T>> {118 override fun test(value: List<T>): MatcherResult {119 return testMonotonicallyIncreasingWith(value) { a, b -> a.compareTo(b) }120 }121}122fun <T> beMonotonicallyIncreasingWith(comparator: Comparator<in T>): Matcher<List<T>> =123 monotonicallyIncreasingWith(comparator)124fun <T> monotonicallyIncreasingWith(comparator: Comparator<in T>): Matcher<List<T>> = object : Matcher<List<T>> {125 override fun test(value: List<T>): MatcherResult {126 return testMonotonicallyIncreasingWith(value, comparator)127 }128}129private fun <T> testMonotonicallyIncreasingWith(value: List<T>, comparator: Comparator<in T>): MatcherResult {130 val failure = value.zipWithNext().withIndex().find { (_, pair) -> comparator.compare(pair.first, pair.second) > 0 }131 val snippet = value.print().value132 val elementMessage = when (failure) {133 null -> ""134 else -> ". Element \${failure.value.second} at index \${failure.index + 1} was not monotonically increased from previous element."135 }136 return MatcherResult(137 failure == null,138 { "List [\$snippet] should be monotonically increasing\$elementMessage" },139 { "List [\$snippet] should not be monotonically increasing" }140 )141}...`

TimeSeriesDBTest.kt

Source:TimeSeriesDBTest.kt

`1package org.raspikiln.tsdb2import io.kotest.core.spec.style.FunSpec3import io.kotest.matchers.collections.shouldBeMonotonicallyIncreasingWith4import io.kotest.matchers.doubles.shouldBeGreaterThan5import io.kotest.matchers.doubles.shouldBeGreaterThanOrEqual6import io.kotest.matchers.doubles.shouldBeLessThan7import io.kotest.matchers.ints.shouldBeExactly8import io.kotest.matchers.ints.shouldBeLessThan9import io.kotest.matchers.shouldBe10import kotlinx.coroutines.delay11import java.io.File12import java.time.Instant13import java.util.Comparator14import kotlin.random.Random15import kotlin.time.Duration16import kotlin.time.Duration.Companion.hours17import kotlin.time.Duration.Companion.seconds18class TimeSeriesDBTest : FunSpec({19 test("able to write and do things") {20 val db = timeSeriesDb(retention = 10.hours)21 val temperatureA = MetricGenerator(MetricIdentifier(name = "temperatureA"), 0..20)22 val temperatureB = MetricGenerator(MetricIdentifier(name = "temperatureB"), 40..60)23 var metricCount = 024 repeat(2_000) { _ ->25 val metricsAdded = (1..10).random()26 metricCount += metricsAdded27 repeat(metricsAdded) {28 db.write(listOf(temperatureA.next(), temperatureB.next()))29 }30 listOf(temperatureA, temperatureB).forEach { metric ->31 val query = db.query(metric.identifier, Instant.now().minusSeconds(3_000)..Instant.now()).toList()32 query.forEach { metric shouldContain it.value }33 query.shouldBeMonotonicallyIncreasingWith(Comparator.comparing { it.timestamp })34 query.count() shouldBe metricCount35 }36 delay(5)37 }38 }39 test("clear partitions after retention") {40 val db = timeSeriesDb(retention = 10.seconds)41 val metricMeasurement = MetricGenerator(MetricIdentifier(name = "temperatureA"), 0..20)42 repeat(500) {43 db.write(metricMeasurement.next())44 }45 delay(12_000)46 db.write(metricMeasurement.next())47 db.query(48 metricName = metricMeasurement.identifier,49 timestampRange = Instant.now().minusSeconds(20)..Instant.now()50 ).count() shouldBeExactly 151 }52})53data class MetricGenerator(54 val identifier: MetricIdentifier,55 val range: IntRange56) {57 infix fun shouldContain(value: Double) {58 range.first.toDouble() shouldBeLessThan value59 range.last.toDouble() shouldBeGreaterThanOrEqual value60 }61 fun next(): Measurement =62 Measurement(63 metric = identifier,64 datapoint = Datapoint(65 timestamp = Instant.now(),66 value = nextValue()67 )68 )69 private fun nextValue() = Random.Default.nextDouble(range.first.toDouble(), range.last.toDouble())70}71private fun timeSeriesDb(retention: Duration = 10.hours) =72 StandardTimeSeriesDB(options = StandardTimeSeriesDB.Options(73 directory = File("data-test"),74 partitionDuration = 10.seconds,75 partitionCapacity = 1_000,76 retention = retention,77 deleteDelayTime = 0.seconds78 )).apply { purgeAll() }...`

OrganizationChecker.kt

Source:OrganizationChecker.kt

`1package com.tavrida.energysales.importData2import com.tavrida.energysales.data_access.models.Organization3import database_creation.xlsx.reader.OrganizationsWithStructureXlsReader4import io.kotest.matchers.collections.shouldBeMonotonicallyIncreasing5import io.kotest.matchers.collections.shouldBeSorted6import io.kotest.matchers.collections.shouldBeSortedWith7import io.kotest.matchers.collections.shouldNotBeEmpty8object OrganizationChecker {9 fun List<Organization>.check() {10 checkNameDuplicates()11 checkSerialNumberDuplicates()12 checkReadingChronologicalOrder()13 }14 private fun List<Organization>.checkReadingChronologicalOrder() {15 forEach {16 it.counters.forEach {17 it.readings.shouldNotBeEmpty()18 it.readings.map { it.readingTime }.shouldBeMonotonicallyIncreasing()19 }20 }21 }22 private fun List<Organization>.checkNameDuplicates() {23 val duplicatedNames = groupBy { it.name }24 .filter { it.value.size > 1 }25 .map { it.key }26 if (duplicatedNames.isNotEmpty()) {27 throw Exception("Organizations with duplicated names found: \$duplicatedNames")28 }29 }30 private fun List<Organization>.checkSerialNumberDuplicates() {31 val duplicates = flatMap { org -> org.counters.map { org to it } }32 .groupBy { (org, counter) -> counter.serialNumber }33 .filter { it.value.size > 1 }34 .map { it.value.map { (org, counter) -> org.name to counter.serialNumber } }35 if (duplicates.isNotEmpty()) {36 throw Exception("Duplicated serial numbers found: \$duplicates")37 }38 }39 @JvmName("checkSerialNumberDuplicatesOnListOfRecords")40 fun List<OrganizationsWithStructureXlsReader.OrganizationCounterReadingRecord>.checkSerialNumberDuplicates() {41 val duplicates = groupBy { it.serialNumber }42 .filter { it.value.size > 1 }43 .map { it.key }44 if (duplicates.isNotEmpty()) {45 throw Exception("Organizations with duplicated names found: \$duplicates")46 }47 }48}...`

DailyBalancesPropJqwikTest.kt

Source:DailyBalancesPropJqwikTest.kt

`...18 val result = list.expandToDaily()19 result.shouldContainAll(list)20 }21 @Property22 fun `result is strictly increasing by the balance date`(@ForAll("uniqueBalances") list: List<Balance>) {23 val result = list.expandToDaily()24 result.shouldBeStrictlyIncreasingWith(compareBy { it.date })25 }26 @Property27 fun `returns the whole range`(@ForAll("uniqueBalances") @NotEmpty list: List<Balance>) {28 val result = list.expandToDaily()29 result.map { it.date } shouldBe wholeDateRange(result.minOf { it.date }, result.maxOf { it.date })30 }31 @Provide32 fun uniqueBalances(): Arbitrary<List<Balance>> {33 val balanceArbitrary = combine(34 Dates.dates().between(LocalDate.of(1970, 1, 1), LocalDate.of(2030, 12, 31)),35 Arbitraries.bigDecimals()36 ) { d, a -> Balance(d, a) }...`

DailyBalancesPropKotestTest.kt

Source:DailyBalancesPropKotestTest.kt

`...17 val result = list.expandToDaily()18 result.shouldContainAll(list)19 }20 }21 it("result is strictly increasing by the balance date") {22 checkAll(arbUniqueList()) { list ->23 val result = list.expandToDaily()24 result.shouldBeStrictlyIncreasingWith(compareBy { it.date })25 }26 }27 it("returns the whole range") {28 checkAll(arbUniqueList(minLength = 1)) { list ->29 val result = list.expandToDaily()30 result.map { it.date } shouldBe wholeDateRange(result.minOf { it.date }, result.maxOf { it.date })31 }32 }33 }34})...`

increasing

Using AI Code Generation

`1 import io.kotest.matchers.collections.shouldContain2 import io.kotest.matchers.collections.shouldContainAll3 import io.kotest.matchers.collections.shouldContainExactly4 import io.kotest.matchers.collections.shouldContainExactlyInAnyOrder5 import io.kotest.matchers.collections.shouldContainExactlyInAnyOrderOnly6 import io.kotest.matchers.collections.shouldContainInOrder7 import io.kotest.matchers.collections.shouldContainInOrderOnly8 import io.kotest.matchers.collections.shouldContainNone9 import io.kotest.matchers.collections.shouldContainSame10 import io.kotest.matchers.collections.shouldContainSameElementsAs11 import io.kotest.matchers.collections.shouldContainSameInOrderAs12 import io.kotest.matchers.collections.shouldHaveAtLeastSize13 import io.kotest.matchers.collections.shouldHaveAtMostSize14 import io.kotest.matchers.collections.shouldHaveSingleElement15 import io.kotest.matchers.collections.shouldHaveSize16 import io.kotest.matchers.collections.shouldHaveTheSameElementsAs17 import io.kotest.matchers.collections.shouldHaveTheSameElementsInOrderAs18 import io.kotest.matchers.collections.shouldNotContain19 import io.kotest.matchers.collections.shouldNotContainAll20 import io.kotest.matchers.collections.shouldNotContainExactly21 import io.kotest.matchers.collections.shouldNotContainExactlyInAnyOrder22 import io.kotest.matchers.collections.shouldNotContainExactlyInAnyOrderOnly23 import io.kotest.matchers.collections.shouldNotContainInOrder24 import io.kotest.matchers.collections.shouldNotContainInOrderOnly25 import io.kotest.matchers.collections.shouldNotContainNone26 import io.kotest.matchers.collections.shouldNotContainSame27 import io.kotest.matchers.collections.shouldNotContainSameElementsAs28 import io.kotest.matchers.collections.shouldNotContainSameInOrderAs29 import io.kotest.matchers.collections.shouldNotHaveAtLeastSize30 import io.kotest.matchers.collections.shouldNotHaveAtMostSize31 import io.kotest.matchers.collections.shouldNotHaveSingleElement32 import io.kotest.matchers.collections.shouldNotHaveSize33 import io.kotest.matchers.collections.shouldNotHaveTheSameElementsAs34 import io.k`

increasing

Using AI Code Generation

`1 import io.kotest.matchers.collections.shouldContainAll2 import io.kotest.matchers.collections.shouldContainExactly3 import io.kotest.matchers.collections.shouldContainExactlyInAnyOrder4 import io.kotest.matchers.collections.shouldContainExactlyInOrder5 import io.kotest.matchers.collections.shouldContainExactlyInOrderOnly6 import io.kotest.matchers.collections.shouldContainInOrder7 import io.kotest.matchers.collections.shouldContainInOrderOnly8 import io.kotest.matchers.collections.shouldContainSame9 import io.kotest.matchers.collections.shouldContainSize10 import io.kotest.matchers.collections.shouldContainSubset11 import io.kotest.matchers.collections.shouldContain12 import io.kotest.matchers.collections.shouldContainAllInAnyOrder13 import io.kotest.matchers.collections.shouldContainAllInOrder14 import io.kotest.matchers.collections.shouldContainAllInOrderOnly15 import io.kotest.matchers.collections.shouldContainAllInAnyOrderOnly16 import io.kotest.matchers.collections.shouldContainAllInAnyOrderOnlyNullsFirst17 import io.kotest.matchers.collections.shouldContainAllInAnyOrderOnlyNullsLast18 import io.kotest.matchers.collections.shouldContainAllInOrderOnlyNullsFirst19 import io.kotest.matchers.collections.shouldContainAllInOrderOnlyNullsLast20 import io.kotest.matchers.collections.shouldContainAllInOrderOnlyNullsFirst21 import io.kotest.matchers.collections.shouldContainAllInAnyOrderOnlyNullsLast22 import io.kotest.matchers.collections.shouldContainAllInOrderOnlyNullsFirst23 import io.kotest.matchers.collections.shouldContainAllInAnyOrderOnlyNullsLast24 import io.kotest.matchers.collections.shouldContainAllInOrderOnlyNullsFirst25 import io.kotest.matchers.collections.shouldContainAllInAnyOrderOnlyNullsLast26 import io.kotest.matchers.collections.shouldContainAllInOrderOnlyNullsFirst27 import io.kotest.matchers.collections.shouldContainAllInAnyOrderOnlyNullsLast28 import io.kotest.matchers.collections.shouldContainAllInOrderOnlyNullsFirst29 import io.kotest.matchers.collections.shouldContainAllInAnyOrderOnlyNullsLast30 import io.kotest.matchers`

increasing

Using AI Code Generation

`1val result = listOf(1, 2, 3, 4, 5)2result.shouldContainAll(1, 2, 3)3result.shouldContainNone(6, 7, 8)4result.shouldContainExactly(1, 2, 3, 4, 5)5result.shouldContainExactlyInAnyOrder(5, 4, 3, 2, 1)6result.shouldContainInOrder(1, 2, 3)7result.shouldContainInOrderOnly(1, 2, 3, 4, 5)8result.shouldContainInOrderOnly(5, 4, 3, 2, 1)9result.shouldContainOnly(1, 2, 3, 4, 5)10result.shouldContainOnly(5, 4, 3, 2, 1)11result.shouldContainExactlyInAnyOrder(5, 4, 3, 2, 1)12result.shouldContainExactly(1, 2, 3, 4, 5)13result.shouldContainExactlyInAnyOrder(5, 4, 3, 2, 1)14result.shouldContainInOrder(1, 2, 3)15result.shouldContainInOrderOnly(1, 2, 3, 4, 5)16result.shouldContainInOrderOnly(5, 4, 3, 2, 1)17result.shouldContainOnly(1, 2, 3, 4, 5)18result.shouldContainOnly(5, 4, 3, 2, 1)19result.shouldContainExactlyInAnyOrder(5, 4, 3, 2, 1)20result.shouldContainExactly(1, 2, 3, 4, 5)21result.shouldContainExactlyInAnyOrder(5, 4, 3, 2, 1)22result.shouldContainInOrder(1, 2, 3)23result.shouldContainInOrderOnly(1, 2, 3, 4, 5)24result.shouldContainInOrderOnly(5, 4, 3, 2, 1)25result.shouldContainOnly(1, 2, 3, 4, 5)26result.shouldContainOnly(5, 4, 3, 2, 1)`

increasing

Using AI Code Generation

`1import io.kotest.matchers.collections.shouldContainExactly2class MyTest : ShouldSpec({3"should contain exactly" {4val list = listOf(1, 2, 3, 4)5list shouldContainExactly listOf(1, 2, 3, 4)6}7})8import io.kotest.matchers.collections.shouldContainExactlyInAnyOrder9class MyTest : ShouldSpec({10"should contain exactly in any order" {11val list = listOf(1, 2, 3, 4)12list shouldContainExactlyInAnyOrder listOf(4, 3, 2, 1)13}14})15import io.kotest.matchers.collections.shouldContainExactlyInAnyOrder16class MyTest : ShouldSpec({17"should contain exactly in any order" {18val list = listOf(1, 2, 3, 4)19list shouldContainExactlyInAnyOrder listOf(4, 3, 2, 1)20}21})22import io.kotest.matchers.collections.shouldContainExactlyInAnyOrder23class MyTest : ShouldSpec({24"should contain exactly in any order" {25val list = listOf(1, 2, 3, 4)26list shouldContainExactlyInAnyOrder listOf(4, 3, 2, 1)27}28})29import io.kotest.matchers.collections.shouldContainExactlyInAnyOrder30class MyTest : ShouldSpec({31"should contain exactly in any order" {32val list = listOf(1, 2, 3, 4)33list shouldContainExactlyInAnyOrder listOf(4, 3, 2, 1)34}35})36import io.kotest.matchers.collections.shouldContainExactlyInAnyOrder37class MyTest : ShouldSpec({38"should contain exactly in any order" {39val list = listOf(1, 2, 3, 4)40list shouldContainExactlyInAnyOrder listOf(4, 3, 2, 1)41}42})`

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