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

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