scala - 何时在具有 BeforeAndAfter 特性的 ScalaTest 类中调用 before() 和 after()

Question

考虑以下用于 BeforeAndAfter 和 BeforeAndAfterAll 的最小可行自包含测试用例:

import org.scalatest.{BeforeAndAfter, BeforeAndAfterAll, FunSuite}

class BeforeAndAfterTestTest extends FunSuite with BeforeAndAfter with BeforeAndAfterAll {

  override protected def beforeAll(): Unit = println("beforeAll")

  override protected def afterAll(): Unit = println("afterAll")

  override protected def before(fun: => Any)(implicit pos: Position): Unit = {
    println("before")
  }

  override protected def after(fun: => Any)(implicit pos: Position): Unit = {
    println("after")
  }

  test("hello1") { println("hello1") }

  test("hello2") { println("hello2") }
}

通过 scalatest 运行的结果是:

所以:

• before/afterAll do 执行
• 之前/之后做不

调用 before 和 after 方法需要什么？

Answer 1

您应该调用之前和之后，而不是覆盖它们:

import org.scalatest.{BeforeAndAfter, BeforeAndAfterAll, FunSuite}

class BeforeAndAfterTestTest extends FunSuite with BeforeAndAfter with BeforeAndAfterAll {

  override protected def beforeAll(): Unit = println("beforeAll")

  override protected def afterAll(): Unit = println("afterAll")

  before {
    println("before")
  }

  after {
    println("after")
  }

  test("hello1") { println("hello1") }

  test("hello2") { println("hello2") }
}

参见文档 here

如果你想要可覆盖的方法，你应该使用BeforeAndAfterEach，而不是BeforeAndAfter (doc)