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Open up ValidationBuilder for extension (#170)
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53 changes: 53 additions & 0 deletions
53
...mmonTest/kotlin/io/konform/validation/validationbuilder/ExtendingValidationBuilderTest.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package io.konform.validation.validationbuilder | ||
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|
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| import io.konform.validation.Validation | ||
| import io.konform.validation.ValidationBuilder | ||
| import io.konform.validation.ValidationError | ||
| import io.konform.validation.constraints.minLength | ||
| import io.konform.validation.path.ValidationPath | ||
| import io.kotest.assertions.konform.shouldBeInvalid | ||
| import io.kotest.assertions.konform.shouldBeValid | ||
| import io.kotest.assertions.konform.shouldContainExactlyErrors | ||
| import kotlin.reflect.KProperty1 | ||
| import kotlin.test.Test | ||
|
|
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| class ExtendingValidationBuilderTest { | ||
| @Test | ||
| fun allowsExtending() { | ||
| val validation = | ||
| MyValidationBuilder<User> { | ||
| User::name trimmed { | ||
| minLength(1) | ||
| } | ||
| } | ||
|
|
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| validation shouldBeValid User("John") | ||
| (validation shouldBeInvalid User("")).shouldContainExactlyErrors( | ||
| ValidationError.of(User::name, "must have at least 1 characters"), | ||
| ) | ||
| (validation shouldBeInvalid User("\t")).shouldContainExactlyErrors( | ||
| ValidationError.of(User::name, "must have at least 1 characters"), | ||
| ) | ||
| } | ||
| } | ||
|
|
||
| data class User( | ||
| val name: String, | ||
| ) | ||
|
|
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| class MyValidationBuilder<T> : ValidationBuilder<T>() { | ||
| infix fun KProperty1<T, String>.trimmed(init: ValidationBuilder<String>.() -> Unit): Unit = | ||
| this { | ||
| validate(ValidationPath.EMPTY, { it.trim() }) { | ||
| run(buildWithNew(init)) | ||
| } | ||
| } | ||
|
|
||
| companion object { | ||
| operator fun <T> invoke(init: MyValidationBuilder<T>.() -> Unit): Validation<T> { | ||
| val builder = MyValidationBuilder<T>() | ||
| init(builder) | ||
| return builder.build() | ||
| } | ||
| } | ||
| } |