如何在测试之前启动 Play 应用程序，然后在 specs2 中将其关闭？

Question

我的目标是让应用程序运行并在应用程序的同一个实例上执行多个测试。

我尝试过this solution，但运气不佳。这是我的测试：

class ApplicationSpec extends Specification { sequential


  object AppWithTestDb2 extends FakeApplication(additionalConfiguration = 
    Map(
    ("db.default.driver") -> "org.h2.Driver",
    ("db.default.url") -> (
//        "jdbc:h2:mem:play-test-" + scala.util.Random.nextInt +      // in memory database 
        "jdbc:h2:/tmp/play-test-" + scala.util.Random.nextInt +     // file based db that can be accessed using h2-browse in activator
        ";MODE=PostgreSQL;DATABASE_TO_UPPER=false;DB_CLOSE_DELAY=-1")
    ))

    running(AppWithTestDb2) {

      "Application" should {

        "send 404 on a bad request" in {
          route(FakeRequest(GET, "/boum")) must beNone
        }

        "post signup request" in {
          val res = route(FakeRequest(POST, "/user", FakeHeaders(), TestData.newUser)).get
                  status(res) must equalTo(OK)
                  contentType(res) must beSome("application/json")
                  contentAsJson(res) mustEqual TestData.newUser
        }

        "fail signup request for existing user" in {
          val res1 = route(FakeRequest(POST, "/user", FakeHeaders(), TestData.newUser)).get
                  Await.result(res1, Duration.Inf)
                  val res = route(FakeRequest(POST, "/user", FakeHeaders(), TestData.newUser)).get
                  Await.result(res, Duration.Inf)
                  status(res) must equalTo(CONFLICT)
                  contentType(res) must beSome("application/json")
                  contentAsJson(res) mustEqual TestData.newUser
        }

    }
  }

}

这里的问题是应用程序立即启动和停止，并且在没有运行应用程序的情况下执行测试：

[debug] c.j.b.BoneCPDataSource - JDBC URL = jdbc:h2:/tmp/play-test--437407884;MODE=PostgreSQL;DATABASE_TO_UPPER=false;DB_CLOSE_DELAY=-1, Username = zalando, partitions = 1, max (per partition) = 30, min (per partition) = 5, idle max age = 10 min, idle test period = 1 min, strategy = DEFAULT
[info] application - Application has started
[debug] application - Binding to Slick DAO implementations.
[info] application - Application shutdown...
[debug] c.j.b.BoneCPDataSource - Connection pool has been shut down
[info] ApplicationSpec
[info] 
[info] Application should
[info] ! send 404 on a bad request
[error]    RuntimeException: : There is no started application  (Play.scala:71)
[error] play.api.Play$$anonfun$current$1.apply(Play.scala:71)
[error] play.api.Play$$anonfun$current$1.apply(Play.scala:71)
[error] play.api.Play$.current(Play.scala:71)
[error] play.api.test.RouteInvokers$class.route(Helpers.scala:305)
[error] play.api.test.Helpers$.route(Helpers.scala:403)
[error] ApplicationSpec$$anonfun$1$$anonfun$apply$7$$anonfun$apply$8$$anonfun$apply$9.apply(ApplicationSpec.scala:76)
[error] ApplicationSpec$$anonfun$1$$anonfun$apply$7$$anonfun$apply$8$$anonfun$apply$9.apply(ApplicationSpec.scala:76)
[error] ApplicationSpec$$anonfun$1$$anonfun$apply$7$$anonfun$apply$8.apply(ApplicationSpec.scala:76)
[error] ApplicationSpec$$anonfun$1$$anonfun$apply$7$$anonfun$apply$8.apply(ApplicationSpec.scala:76)

Answer 1

这是我的工作解决方案

object AppWithTestDb2 extends FakeApplication(additionalConfiguration = 
Map(
    ("db.default.driver") -> "org.h2.Driver",
    ("db.default.url") -> (
//        "jdbc:h2:mem:play-test-" + scala.util.Random.nextInt +      // in memory database 
        "jdbc:h2:/tmp/play-test-" + scala.util.Random.nextInt +     // file based db that can be accessed using h2-browse in activator
        ";MODE=PostgreSQL;DATABASE_TO_UPPER=false;DB_CLOSE_DELAY=-1")
))


class SignupLoginSpec extends Specification { sequential


    step(Play.start(AppWithTestDb2))

  "application" should {

    "post signup request" in {
      val res = route(FakeRequest(POST, "/user", FakeHeaders(), TestData.newUser)).get
      status(res) must equalTo(OK)
      contentType(res) must beSome("application/json")
      contentAsJson(res) mustEqual TestData.newUser
    }

    "fail signup request for existing user" in {
      val res1 = route(FakeRequest(POST, "/user", FakeHeaders(), TestData.newUser)).get
      Await.result(res1, Duration.Inf)
      val res = route(FakeRequest(POST, "/user", FakeHeaders(), TestData.newUser)).get
      Await.result(res, Duration.Inf)
      status(res) must equalTo(CONFLICT)
      contentType(res) must beSome("application/json")
      contentAsJson(res) mustEqual TestData.newUser
    }

  }

  step(Play.stop())

}

Answer 2

在 specs2 中，测试声明和测试执行是有区别的。当您编写"application" should ... 时，您只需声明 测试。可执行部分包含在... in ... 部分中。

因此，当您声明 running(AppWithTestDb2) { ... } 时，您只需在 AppTestDb2 应用程序的上下文中创建一些测试。

您想要在 specs2 中实现的一般解决方案是像这样使用Steps：

class ApplicationSpec extends Specification { sequential

  step("start application")

  "Application" should {
    "send 404 on a bad request" in { ... }

    "post signup request" in { ... }
  }

  step("stop application")
}

然后，specs2 执行模型的工作方式，您将在所有测试开始之前启动您的假应用程序，并在所有测试完成后终止（无论您是否使用sequential）

我不是 Play 用户，但我怀疑您应该能够重用 WithApplication 类或类似的东西来创建您的开始/停止步骤。否则，有一篇博文here 探索解决同一问题的方法。