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How to use startWith method of io.kotest.matchers.string.start class

Best Kotest code snippet using io.kotest.matchers.string.start.startWith

NullSafeTypeTest.kt

Source:NullSafeTypeTest.kt

...3import io.kotest.core.spec.style.StringSpec4import io.kotest.matchers.should5import io.kotest.matchers.shouldBe6import io.kotest.matchers.shouldNotBe7import io.kotest.matchers.string.startWith8class NullSafeTypeTest : StringSpec({9    lateinit var nullSafeType: NullSafeType10    beforeTest {11        nullSafeType = NullSafeType()12    }13    "a can not null" {14        nullSafeType.a shouldNotBe null15    }16    "b null safe => ?" {17        nullSafeType.b = null18        nullSafeType.b shouldBe null19    }20    "c let null safe => .let{}" {21        nullSafeType.c() shouldBe null22        nullSafeType.c()?.let {23            if (it.isNotBlank()) {24                it.capitalize()25            }26        } shouldBe null27    }28    "d assert null => !!" {29        val tmp: String? = nullSafeType.d()30        val exception = shouldThrow<NullPointerException> {31            tmp!!.count() shouldBe 032        }33//        println("exception.cause = ${exception.cause}")34        exception.message shouldBe null35    }36    "e elvis operator => :?" {37        val exception = shouldThrow<IllegalArgumentException> {38            nullSafeType.e() ?: throw IllegalArgumentException("nullSafeType e is null")39        }40        exception.message should startWith("nullSafeType e is null")41    }42    "f safe cast => as?" {43        @Suppress("CAST_NEVER_SUCCEEDS")44        val tmp: Int? = nullSafeType.f as? Int45        tmp shouldBe null46    }47    "g safe nullable list => filterNotNull()" {48        val intList: List<Int> = nullSafeType.gList.filterNotNull()49        intList shouldNotBe null50        intList.count() shouldBe 351    }52})...

BmiForCmKgTest.kt

Source:BmiForCmKgTest.kt

...5import io.kotest.assertions.throwables.shouldThrow6import io.kotest.matchers.doubles.plusOrMinus7import io.kotest.matchers.should8import io.kotest.matchers.shouldBe9import io.kotest.matchers.string.startWith10class BmiForCmKgTest: StringSpec({11    "test BMI correct values" {12        val bmi = BmiForCmKg(60.0, 176.0)13        bmi.count() shouldBe  (19.37 plusOrMinus 0.001)14    }15    "test BMI less than min mass" {16        val bmi = BmiForCmKg(BmiForCmKg.MIN_MASS - 1, 176.0)17        val exception = shouldThrow<Exception> {18            bmi.count()19        }20        exception.message should startWith("The mass is less than ${BmiForCmKg.MIN_MASS}")21    }22    "test BMI more than max mass" {23        val bmi = BmiForCmKg(BmiForCmKg.MAX_MASS + 1, 176.0)24        val exception = shouldThrow<Exception> {25            bmi.count()26        }27        exception.message should startWith("The mass is more than ${BmiForCmKg.MAX_MASS}")28    }29    "test BMI less than min height" {30        val bmi = BmiForCmKg(60.0,BmiForCmKg.MIN_HEIGHT - 1)31        val exception = shouldThrow<Exception> {32            bmi.count()33        }34        exception.message should startWith("The height is less than ${BmiForCmKg.MIN_HEIGHT}")35    }36    "test BMI more than max height" {37        val bmi = BmiForCmKg(60.0,BmiForCmKg.MAX_HEIGHT + 2)38        val exception = shouldThrow<Exception> {39            bmi.count()40        }41        exception.message should startWith("The height is more than ${BmiForCmKg.MAX_HEIGHT}")42    }43}) {44}...

ModelsSpec.kt

Source:ModelsSpec.kt

...5import io.kotest.assertions.throwables.shouldThrow6import io.kotest.core.spec.style.StringSpec7import io.kotest.matchers.should8import io.kotest.matchers.shouldBe9import io.kotest.matchers.string.startWith10import java.io.File11class ModelsSpec : StringSpec({12    "can deserialize a UserInfo from json string" {13        val userInfoData: String = File("./resources/github-user-info.json").readText(Charsets.UTF_8)14        val userInfo = GitHubUserInfo.deserializeFromJson(userInfoData)15        userInfo.map { it.username shouldBe "adomokos" }16    }17    "won't work with invalid data" {18        val exception = shouldThrow<KlaxonException> {19            GitHubUserInfo.deserializeFromJson("something")20        }21        exception.message should startWith("Unexpected character at position 0: 's'")22    }23    "can deserialize a UserInfo from json string with Either returned type" {24        val userInfoData: String = File("./resources/github-user-info.json").readText(Charsets.UTF_8)25        val userInfo = GitHubUserInfo.deserializeFromJson2(userInfoData).value().fix().unsafeRunSync()26        userInfo.map { it.username shouldBe "adomokos" }27    }28    "returns Left if any error occurs" {29        val userInfo =30            GitHubUserInfo.deserializeFromJson2("something").value().fix().unsafeRunSync()31        userInfo shouldBe Left(AppError.JSONDeserializationError)32    }33})...

FunSpecSimpleTest.kt

Source:FunSpecSimpleTest.kt

...5import io.kotest.matchers.should6import io.kotest.matchers.shouldBe7import io.kotest.matchers.string.endWith8import io.kotest.matchers.string.shouldContain9import io.kotest.matchers.string.startWith10class FunSpecSimpleTest : FunSpec({11    test("name of tester should return the correct length") {12        val nameTester = "Matheus Marin"13        nameTester.shouldContain("Matheus")14        nameTester.length shouldBe 1315        nameTester should startWith("Matheus")16        nameTester should endWith("Marin")17    }18    test("a json with a developer should be valid") {19        val json = """ { "age" : 23, "name": "matheus", "location": "sao paulo" } """20        json.shouldEqualJson(returnJsonOfAValidDev())21    }22    test("a json with a PO should be invalid") {23        val json = """ { "age" : 45, "name": "robert", "location": "rio de janeiro" } """24        json.shouldNotEqualJson(returnJsonOfAValidDev())25    }26}) {27    companion object {28        fun returnJsonOfAValidDev() : String{29            return  """ { "age" : 23, "name": "matheus", "location": "sao paulo" } """...

SelfDefExceptionTest.kt

Source:SelfDefExceptionTest.kt

2import io.kotest.assertions.throwables.shouldThrow3import io.kotest.core.spec.style.StringSpec4import io.kotest.matchers.should5import io.kotest.matchers.shouldBe6import io.kotest.matchers.string.startWith7class SelfDefExceptionTest : StringSpec({8    "cache exception" {9        val num: Int? = null10        try {11            num!!.plus(1)12        } catch (e: Exception) {13//          println("e.message = ${e.message}")14            e.message shouldBe null15        }16    }17    "self define exception" {18        val num: Int? = null19        val exception = shouldThrow<SelfDefException> {20            num ?: throw SelfDefException("null is num")21        }22//        println("exception.message = ${exception.message}")23        exception.message should startWith("null is")24    }25})...

MyTest.kt

Source:MyTest.kt

...3import io.kotest.core.spec.style.StringSpec4import io.kotest.matchers.comparables.shouldNotBeLessThan5import io.kotest.matchers.should6import io.kotest.matchers.shouldBe7import io.kotest.matchers.string.startWith8class MyTest : StringSpec({9    "length should return size of string" {10        "hello".length shouldBe 511    }12    "startsWith should test for a prefix" {13        "world" should startWith("wor")14    }15    "should give back any first name with less than 1 character's" {16        Faker().name.firstName() shouldNotBeLessThan "1"17    }18})...

PropertyTestExample.kt

Source:PropertyTestExample.kt

1package com.ivy.wallet2import io.kotest.core.spec.style.StringSpec3import io.kotest.matchers.should4import io.kotest.matchers.shouldBe5import io.kotest.matchers.string.startWith6import io.kotest.property.forAll7class PropertyTestExample : StringSpec({8    "length should return size of string" {9        "hello".length shouldBe 510    }11    "startsWith should test for a prefix" {12        "world" should startWith("wor")13    }14    "String size" {15        forAll<String, String> { a, b ->16            a.length + b.length == (a + b).length17        }18    }19})...

VersionUtilTest.kt

Source:VersionUtilTest.kt

1package io.routr.util2import io.kotest.core.spec.style.StringSpec3import io.kotest.matchers.should4import io.kotest.matchers.shouldBe5import io.kotest.matchers.string.startWith6class VersionUtilTest : StringSpec({7    "length should return size of string" {8        "hello".length shouldBe 59    }10    "startsWith should test for a prefix" {11        "world" should startWith("wor")12    }13})...

startWith

Using AI Code Generation

1fun String.startWith(prefix: String): Boolean2fun String.startWithIgnoringCase(prefix: String): Boolean3Kotlin | String.trimIndent() method4Kotlin | String.trimMargin() method5Kotlin | String.truncate() method6Kotlin | String.truncateAtWord() method7Kotlin | String.underline() method8Kotlin | String.underscore() method9Kotlin | String.upperUnderscore() method10Kotlin | String.upperCamelCase() method11Kotlin | String.upperHyphen() method12Kotlin | String.upperSnakeCase() method13Kotlin | String.upperSpaceCase() method14Kotlin | String.upperTitleCase() method15Kotlin | String.upperUnderscore() method16Kotlin | String.upperCamelCase() method17Kotlin | String.upperHyphen() method18Kotlin | String.upperSnakeCase() method19Kotlin | String.upperSpaceCase() method

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