scala - 创建自定义任意生成器以测试来自 ScalaTest ScalaCheck 的 java 代码

Question

是否可以在测试 Java 代码的 ScalaTest(它混合了 Checkers for ScalaCheck 属性)中创建自定义任意生成器？例如以下是 forAll 中每个测试所需的步骤

val fund = new Fund()
val fundAccount = new Account(Account.RETIREMENT)
val consumer = new Consumer("John")
.createAccount(fundAccount)
fund.addConsumer(consumer)
fundAccount.deposit(amount)

以上是断言结果等之前的准备代码。

Answer 1

你肯定可以。这应该让你开始。

import org.scalacheck._
import Arbitrary._
import Prop._

case class Consumer(name:String)

object ConsumerChecks extends Properties("Consumer") {
  lazy val genConsumer:Gen[Consumer] = for {
    name <- arbitrary[String]
  } yield Consumer(name)

  implicit lazy val arbConsumer:Arbitrary[Consumer] = Arbitrary(genConsumer)

  property("some prop") = forAll { c:Consumer =>
    // Check stuff
    true
  }
}