Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use Constraints class of io.kotest.property package

Best Kotest code snippet using io.kotest.property.Constraints

EntitySerializerTest.kt

Source:EntitySerializerTest.kt

...54        }55    }56    "A serialized and deserialized ConstraintEntity is not the same when the constraint fun is defined" {57        val constraintConstraintEntityArb = arb { randomSource ->58            val randomConstraints = Arb.string().values(randomSource)59            val randomParameters = Arb.list(Arb.string())60                .map { parameterNames -> parameterNames.map { FieldEntity(it, String::class.java) } }61                .values(randomSource)62            randomConstraints.zip(randomParameters)63                .map { ConstraintFunEntity(equal(1, 1)) }64                .map { ConstraintEntity(it) }65        }66        forAll(constraintConstraintEntityArb) { constraintConstraintEntity ->67            val convertedConstraintConstraintEntity = underTest.deserialize(underTest.serialize(constraintConstraintEntity))68            convertedConstraintConstraintEntity != constraintConstraintEntity69        }70    }71    "A serialized and deserialized AndEntity must be the same as the original entity" {72        val equalEntityArb = arb { randomSource ->73            val randomFields = Arb.string().values(randomSource)74            val randomValues = anyRandomValues(randomSource)75            randomFields.zip(randomValues)76                .map(::createEqualEntity)...

build.gradle.kts

Source:build.gradle.kts

1plugins {2    kotlin("jvm") version "1.4.10"3    idea4}5group = "com.github.justinb99"6version = "1.0-SNAPSHOT"7idea {8    module {9        outputDir = file("build/classes/main")10        testOutputDir = file("build/classes/test")11    }12}13allprojects {14    repositories {15        mavenLocal()16        mavenCentral()17        jcenter()18    }19}20subprojects {21    apply<JavaBasePlugin>()22    apply<org.jetbrains.kotlin.gradle.plugin.KotlinPlatformJvmPlugin>()23    apply<IdeaPlugin>()24    java {25        sourceCompatibility = JavaVersion.VERSION_1526        targetCompatibility = JavaVersion.VERSION_1527    }28    dependencies {29        constraints {30            implementation("ch.qos.logback:logback-classic:1.2.1")31            implementation("com.fasterxml.jackson.core:jackson-databind:2.10.2")32            runtimeOnly("org.postgresql:postgresql:42.2.16.jre7")33        }34        kotlin("stdlib")35        testImplementation("io.kotest:kotest-runner-junit5:4.2.5") // for kotest framework36        testImplementation("io.kotest:kotest-assertions-core:4.2.5") // for kotest core jvm assertions37        testImplementation("io.kotest:kotest-property:4.2.5") // for kotest property test38    }39    tasks {40        withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile> {41            kotlinOptions {42                freeCompilerArgs = listOf(43                        "-Xjsr305=strict",  // Support Java nullability44                        "-Xjvm-default=enable"  // Enable declaration of Java default methods45                )46                jvmTarget = "14"47            }48        }49        test {50            useJUnitPlatform()51        }52    }53}54tasks {55    wrapper {56        gradleVersion = "6.6.1"57//        distributionType = Wrapper.DistributionType.ALL58    }59}...

PropertyValidatorTest.kt

Source:PropertyValidatorTest.kt

1package com.github.njuro.jard.security2import com.github.njuro.jard.WithContainerDatabase3import com.github.njuro.jard.utils.validation.PropertyValidationException4import com.github.njuro.jard.utils.validation.PropertyValidator5import io.kotest.assertions.throwables.shouldThrow6import io.kotest.matchers.collections.shouldHaveSize7import io.kotest.matchers.string.shouldContain8import io.kotest.matchers.string.shouldNotContain9import org.junit.jupiter.api.Test10import org.springframework.beans.factory.annotation.Autowired11import org.springframework.boot.test.context.SpringBootTest12import javax.validation.constraints.Email13import javax.validation.constraints.Size14@SpringBootTest15@WithContainerDatabase16internal class PropertyValidatorTest {17    @Autowired18    private lateinit var propertyValidator: PropertyValidator19    @Test20    fun `validate whole object`() {21        val testEntity = TestEntity(email = "abcde", "ab")22        val result = shouldThrow<PropertyValidationException> {23            propertyValidator.validateObject(testEntity)24        }25        result.bindingResult.fieldErrors shouldHaveSize 226    }27    @Test28    fun `validate single property`() {29        val testEntity = TestEntity(email = "abcde", "ab")30        val result = shouldThrow<PropertyValidationException> {31            propertyValidator.validateProperty(testEntity, "email")32        }33        result.message.shouldContain("email").shouldNotContain("password")34    }35    private data class TestEntity(@field:Email val email: String, @field:Size(min = 3) val password: String)36}...

MatchesTest.kt

Source:MatchesTest.kt

1package com.github.kommodus.constraints.definitions2import io.kotest.core.spec.style.StringSpec3import io.kotest.property.Arb4import io.kotest.property.arbitrary.stringPattern5import io.kotest.property.forAll6class MatchesTest : StringSpec({7    "detects correctly when string matches pattern" {8        val pattern = "^[a-z ]+!$"9        val matcher = Matches(Regex(pattern), "test pattern")10        forAll(Arb.stringPattern(pattern)) { value ->11            matcher.check(value)12        }13    }14    "detects correctly when string doesn't match pattern" {15        val pattern = "^[a-z ]+!$"16        val matcher = Matches(Regex(pattern), "test pattern")17        forAll(Arb.stringPattern("^[^!]*$")) { value ->18            !matcher.check(value)19        }20    }21})...

MinimumTest.kt

Source:MinimumTest.kt

1package com.github.kommodus.constraints.definitions2import io.kotest.core.spec.style.StringSpec3import io.kotest.property.Arb4import io.kotest.property.arbitrary.int5import io.kotest.property.forAll6class MinimumTest : StringSpec({7    "detects correctly whether number is greater than expected" {8        forAll(Arb.int(), Arb.int()) { value, limit ->9            Minimum(limit, inclusive = false).check(value) == (value > limit)10        }11    }12    "detects correctly whether number is greater or equal to expected" {13        forAll(Arb.int(), Arb.int()) { value, limit ->14            Minimum(limit, inclusive = true).check(value) == (value >= limit)15        }16    }17})...

MaximumTest.kt

Source:MaximumTest.kt

1package com.github.kommodus.constraints.definitions2import io.kotest.core.spec.style.StringSpec3import io.kotest.property.Arb4import io.kotest.property.arbitrary.int5import io.kotest.property.forAll6class MaximumTest : StringSpec({7    "detects correctly whether number is less than expected" {8        forAll(Arb.int(), Arb.int()) { value, limit ->9            Maximum(limit, inclusive = false).check(value) == (value < limit)10        }11    }12    "detects correctly whether number is less or equal to expected" {13        forAll(Arb.int(), Arb.int()) { value, limit ->14            Maximum(limit, inclusive = true).check(value) == (value <= limit)15        }16    }17})...

RequiredTest.kt

Source:RequiredTest.kt

1package com.github.kommodus.constraints.definitions2import io.kotest.core.spec.style.StringSpec3import io.kotest.property.Arb4import io.kotest.property.arbitrary.choice5import io.kotest.property.arbitrary.long6import io.kotest.property.arbitrary.orNull7import io.kotest.property.arbitrary.string8import io.kotest.property.forAll9class RequiredTest : StringSpec({10    "detects correctly whether arbitrary value is not null" {11        forAll(Arb.choice(Arb.string().orNull(0.5), Arb.long().orNull(0.5))) { value ->12            Required<Any>().check(value) == (value != null)13        }14    }15})...

NotEmptyTest.kt

Source:NotEmptyTest.kt

1package com.github.kommodus.constraints.definitions2import io.kotest.core.spec.style.StringSpec3import io.kotest.property.Arb4import io.kotest.property.arbitrary.*5import io.kotest.property.forAll6class NotEmptyTest : StringSpec({7    "detects correctly whether arbitrary collection is empty" {8        forAll(9            Arb.choice<Collection<Any>>(10                Arb.list(Arb.boolean()),11                Arb.set(Arb.string()),12            )13        ) { collection ->14            NotEmpty<Collection<Any>>().check(collection) == collection.isNotEmpty()15        }16    }17})...

Constraints

Using AI Code Generation

1import io.kotest.property.Arb2import io.kotest.property.Constraints3import io.kotest.property.arbitrary.int4import io.kotest.property.arbitrary.long5import io.kotest.property.arbitrary.string6val arbInt = Arb.int(Constraints.between(0, 100))7val arbLong = Arb.long(Constraints.between(0L, 100L))8val arbString = Arb.string(Constraints.between(0, 100))9import io.kotest.property.Arb10import io.kotest.property.Constraints11import io.kotest.property.arbitrary.int12import io.kotest.property.arbitrary.long13import io.kotest.property.arbitrary.string14val arbInt = Arb.int(Constraints.between(0, 100))15val arbLong = Arb.long(Constraints.between(0L, 100L))16val arbString = Arb.string(Constraints.between(0, 100))17import io.kotest.property.Arb18import io.kotest.property.Constraints19import io.kotest.property.arbitrary.int20import io.kotest.property.arbitrary.long21import io.kotest.property.arbitrary.string22val arbInt = Arb.int(Constraints.between(0, 100))23val arbLong = Arb.long(Constraints.between(0L, 100L))24val arbString = Arb.string(Constraints.between(0, 100))25import io.kotest.property.Arb26import io.kotest.property.Constraints27import io.kotest.property.arbitrary.int28import io.kotest.property.arbitrary.long29import io.kotest.property.arbitrary.string30val arbInt = Arb.int(Constraints.between(0, 100))31val arbLong = Arb.long(Constraints.between(0L, 100L))32val arbString = Arb.string(Constraints.between(0, 100))33import io.kotest.property.Arb34import io.kotest.property.Constraints35import io.kotest.property.arbitrary.int36import io.kotest.property.arbitrary.long37import io.kotest.property.arbitrary.string38val arbInt = Arb.int(Constraints.between(0, 100

Constraints

Using AI Code Generation

1    constraints {2        minSize(100)3        maxSize(100)4        maxSize(100)5    }6}7Property-based Testing with Kotest (Part 2)8Property-based Testing with Kotest (Part 3)9Property-based Testing with Kotest (Part 4)10Property-based Testing with Kotest (Part 5)11Property-based Testing with Kotest (Part 6)12Property-based Testing with Kotest (Part 7)13Property-based Testing with Kotest (Part 8)14Property-based Testing with Kotest (Part 9)15Property-based Testing with Kotest (Part 10)16Property-based Testing with Kotest (Part 11)17Property-based Testing with Kotest (Part 12)18Property-based Testing with Kotest (Part 13)19Property-based Testing with Kotest (Part 14)20Property-based Testing with Kotest (Part 15)21Property-based Testing with Kotest (Part 16)22Property-based Testing with Kotest (Part 17)23Property-based Testing with Kotest (Part 18)24Property-based Testing with Kotest (Part 19)25Property-based Testing with Kotest (Part 20)26Property-based Testing with Kotest (Part 21)27Property-based Testing with Kotest (Part 22)28Property-based Testing with Kotest (Part 23)29Property-based Testing with Kotest (Part 24)30Property-based Testing with Kotest (Part 25)31Property-based Testing with Kotest (Part 26)32Property-based Testing with Kotest (Part 27)33Property-based Testing with Kotest (Part 28)34Property-based Testing with Kotest (Part 29)35Property-based Testing with Kotest (Part 30)36Property-based Testing with Kotest (Part 31)37Property-based Testing with Kotest (Part 32)38Property-based Testing with Kotest (Part 33)39Property-based Testing with Kotest (Part 34)40Property-based Testing with Kotest (Part 35)41Property-based Testing with Kotest (Part 36)42Property-based Testing with Kotest (Part

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.