Scala GivenWhenThen类代码示例

//设置package包名称以及导入依赖的类
package org.danielwojda.obfuscator.functionaltests

import akka.http.scaladsl.Http
import akka.http.scaladsl.model.{HttpRequest, HttpResponse, StatusCodes}
import org.danielwojda.obfuscator.functionaltests.dsl.AkkaImplicits
import org.danielwojda.obfuscator.functionaltests.dsl.HttpEntityImplicitConverters._
import org.scalatest.concurrent.PatienceConfiguration.Timeout
import org.scalatest.concurrent.ScalaFutures
import org.scalatest.{FlatSpec, GivenWhenThen, Matchers}

import scala.concurrent.Future
import scala.concurrent.duration._
import scala.language.postfixOps

class MonitoringEndpointsSpec extends FlatSpec with Matchers with GivenWhenThen with ScalaFutures with AkkaImplicits {

  override implicit val patienceConfig = PatienceConfig(timeout = 2 seconds)
  implicit val timeout = Timeout(patienceConfig.timeout)

  "Service" should "expose the 'status' endpoint which always returns OK" in {
    When("a 'status' endpoint is called")
    val responseFuture: Future[HttpResponse] = Http().singleRequest(HttpRequest(uri = "http://localhost:8080/private/status"))

    Then("Http status 200 and OK body is returned")
    whenReady(responseFuture) { response =>
      response.status shouldBe StatusCodes.OK
      response.entity.asString shouldBe "OK"
    }
  }

} 

//设置package包名称以及导入依赖的类
package test

import org.scalatest.{FeatureSpec, GivenWhenThen}

class AppSpec extends FeatureSpec with GivenWhenThen {

  info("As an app developer I want to be able to access the app, its settings and properties")

  feature("Application class") {
    scenario("can be instantiated in Headless mode") {
      Given("a default location app.Main for the app")
      When("the class is instantiated as a headless")
      val application = new app.Main(true)
      Then("the object should be instantiated")
      assert(application.isInstanceOf[app.Main])
    }
  }
} 

//设置package包名称以及导入依赖的类
package sample

import org.scalatest.prop.TableDrivenPropertyChecks
import org.scalatest.{FunSpec, GivenWhenThen, Matchers}

class TransferServiceSpec extends FunSpec with Matchers with TableDrivenPropertyChecks with GivenWhenThen {
  describe("TransferService"){
    it("can transfer money from source account to target account"){
      val srcAccount = new Account("xx",100.0)
      val targetAccount = new Account("yy", 50.0)
      TransferService.transfer(srcAccount, targetAccount, 50.0)
      srcAccount.balance shouldBe 50.0
      targetAccount.balance shouldBe 100.0
    }
    it("transfer should fail if not enough balance in source account"){
      pending
    }
    //this is a scalatest table-driven-property-check example
    it("can transfer any amount of money"){
      val example =
        Table(
          ("source account balance","target account balance","transfer amount"," expected source account balance","expected target account balance"),
          (100, 50, 50, 50, 100),
          (77, 0, 50, 27, 50)
        )
      forAll(example){ (srcBalance, targetBalance, amount, expSrcBalance,expTargetBalance) =>
        Given(s"source account who's owner is xx,have balance: $srcBalance")
        val srcAccount = new Account("xx", srcBalance)
        And(s"target account who's owner is yy, have balance: $targetBalance")
        val targetAccount = new Account("yy", targetBalance)
        When(s"Transfer $amount from srcAccount to targetAccount")
        TransferService.transfer(srcAccount, targetAccount, amount)
        Then(s"srcAccount should have balance $expSrcBalance")
        srcAccount.balance shouldBe expSrcBalance
        And(s"targetAccount should have balance $expTargetBalance")
        targetAccount.balance shouldBe expTargetBalance
      }
    }
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.core.event.impl.stream

import javax.servlet.http.HttpServletResponse

import akka.actor.ActorRef
import mesosphere.marathon._
import mesosphere.marathon.api.TestAuthFixture
import mesosphere.marathon.test.{ MarathonSpec, Mockito }
import org.scalatest.{ GivenWhenThen, Matchers }

class HttpEventStreamServletTest extends MarathonSpec with Matchers with Mockito with GivenWhenThen {

  test("access without authentication is denied") {
    Given("An unauthenticated request")
    val f = new Fixture
    val resource = f.streamServlet()
    val response = mock[HttpServletResponse]
    f.auth.authenticated = false

    When("we try to attach to the event stream")
    resource.doGet(f.auth.request, response)

    Then("we receive a NotAuthenticated response")
    verify(response).setStatus(f.auth.NotAuthenticatedStatus)
  }

  test("access without authorization is denied") {
    Given("An unauthorized request")
    val f = new Fixture
    val resource = f.streamServlet()
    val response = mock[HttpServletResponse]
    f.auth.authenticated = true
    f.auth.authorized = false

    When("we try to attach to the event stream")
    resource.doGet(f.auth.request, response)

    Then("we receive a Unauthorized response")
    verify(response).setStatus(f.auth.UnauthorizedStatus)
  }

  class Fixture {
    val actor = mock[ActorRef]
    val auth = new TestAuthFixture
    val config = AllConf.withTestConfig("--event_subscriber", "http_callback")
    def streamServlet() = new HttpEventStreamServlet(actor, config, auth.auth, auth.auth)
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon
package core.event.impl.stream

import java.util.Collections
import javax.servlet.http.HttpServletRequest

import mesosphere.marathon.test.{ MarathonSpec, Mockito }
import org.eclipse.jetty.servlets.EventSource.Emitter
import org.scalatest.{ GivenWhenThen, Matchers }
import mesosphere.marathon.stream._

class HttpEventSSEHandleTest extends MarathonSpec with Matchers with Mockito with GivenWhenThen {

  test("events should be filtered") {
    Given("An emiter")
    val emitter = mock[Emitter]
    Given("An request with params")
    val req = mock[HttpServletRequest]
    req.getParameterMap returns Map("event_type" -> Array("xyz"))

    Given("handler for request is created")
    val handle = new HttpEventSSEHandle(req, emitter)

    When("Want to sent unwanted event")
    handle.sendEvent("any event", "")

    Then("event should NOT be sent")
    verify(emitter, never).event("any event", "")

    When("Want to sent subscribed event")
    handle.sendEvent("xyz", "")

    Then("event should be sent")
    verify(emitter).event("xyz", "")
  }

  test("events should NOT be filtered") {
    Given("An emiter")
    val emitter = mock[Emitter]

    Given("An request without params")
    val req = mock[HttpServletRequest]
    req.getParameterMap returns Collections.emptyMap()

    Given("handler for request is created")
    val handle = new HttpEventSSEHandle(req, emitter)

    When("Want to sent event")
    handle.sendEvent("any event", "")
    Then("event should NOT be sent")

    verify(emitter).event("any event", "")
    When("Want to sent event")

    handle.sendEvent("xyz", "")

    Then("event should be sent")
    verify(emitter).event("xyz", "")
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.core.task.update.impl.steps

import akka.Done
import com.google.inject.Provider
import mesosphere.marathon.core.launchqueue.LaunchQueue
import mesosphere.marathon.core.task.bus.TaskStatusUpdateTestHelper
import mesosphere.marathon.test.Mockito
import org.scalatest.concurrent.ScalaFutures
import org.scalatest.{ FunSuite, GivenWhenThen, Matchers }

import scala.concurrent.Future

class NotifyLaunchQueueStepImplTest extends FunSuite with Matchers with GivenWhenThen with Mockito with ScalaFutures {
  test("name") {
    new Fixture().step.name should equal("notifyLaunchQueue")
  }

  test("notifying launch queue") {
    Given("a status update")
    val f = new Fixture
    val expectedUpdate = TaskStatusUpdateTestHelper.running().wrapped

    When("calling processUpdate")
    f.launchQueue.notifyOfInstanceUpdate(expectedUpdate) returns Future.successful(Done)
    f.step.process(expectedUpdate).futureValue

    Then("the update is passed to the LaunchQueue")
    verify(f.launchQueue).notifyOfInstanceUpdate(expectedUpdate)
  }

  class Fixture {
    val launchQueue = mock[LaunchQueue]
    val launchQueueProvider = new Provider[LaunchQueue] {
      override def get(): LaunchQueue = launchQueue
    }
    val step = new NotifyLaunchQueueStepImpl(launchQueueProvider = launchQueueProvider)
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.state

import mesosphere.marathon.core.readiness.ReadinessCheckTestHelper
import org.scalatest.{ GivenWhenThen, Matchers, FunSuite }
import mesosphere.marathon.Protos

class ReadinessCheckSerializerTest extends FunSuite with Matchers with GivenWhenThen {
  test("get defaultHttp for empty protobuf") {
    Given("an empty protobuf")
    val proto = Protos.ReadinessCheckDefinition.getDefaultInstance
    When("reading it")
    val check = ReadinessCheckSerializer.fromProto(proto)
    Then("we get the defaults")
    check should equal(ReadinessCheckTestHelper.defaultHttp)
  }

  test("defaultHttp example serialized/deserializes") {
    Given("a defaultHttp readinessCheck")
    val defaultHttp = ReadinessCheckTestHelper.defaultHttp
    When("serializing it to a proto")
    val proto = ReadinessCheckSerializer.toProto(defaultHttp)
    And("deserializing it again")
    val reread = ReadinessCheckSerializer.fromProto(proto)
    Then("we get the original check back")
    reread should equal(defaultHttp)
  }

  test("alternativeHttps example serialized/deserializes") {
    Given("a alternativeHttps readinessCheck")
    val alternativeHttps = ReadinessCheckTestHelper.alternativeHttps
    When("serializing it to a proto")
    val proto = ReadinessCheckSerializer.toProto(alternativeHttps)
    And("deserializing it again")
    val reread = ReadinessCheckSerializer.fromProto(proto)
    Then("we get the original check back")
    reread should equal(alternativeHttps)
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.state

import com.google.common.collect.Lists
import mesosphere.marathon.Protos.MarathonTask
import mesosphere.marathon.test.MarathonSpec
import org.scalatest.{ GivenWhenThen, Matchers }

class MarathonTaskTest extends MarathonSpec with GivenWhenThen with Matchers {

  test("toProto returns the encapsulated MarathonTask") {
    Given("A state created from a task")
    val encapsulatedTask = makeTask("app/dummy", 42000, version = Some("123"))
    val state = MarathonTaskState(encapsulatedTask)

    When("We call the toProto function")
    val proto = state.toProto

    Then("The returned proto equals the one passed in")
    proto shouldEqual encapsulatedTask
  }

  test("mergeFromProto returns a sane instance") {
    Given("A state created from a task with version")
    val dummy = makeTask("app/dummy", 42000, version = Some("123"))
    val dummyState = MarathonTaskState(dummy)

    When("We call the mergeFromProto function on that state")
    val proto = makeTask("app/foo", 23000, version = None)
    val merged = dummyState.mergeFromProto(proto)

    Then("The 'merged' state does not have a version because mergeFromProto does not merge but create a new instance based on the given proto")
    merged.toProto shouldEqual proto
  }

  test("mergeFromProto bytes returns a sane instance") {
    Given("A state created from a task with version")
    val dummy = makeTask("app/dummy", 42000, version = Some("123"))
    val dummyState = MarathonTaskState(dummy)

    When("We call the mergeFromProto function using a byte array")
    val proto = makeTask("app/foo", 23000, version = None)
    val merged = dummyState.mergeFromProto(proto.toByteArray)

    Then("The 'merged' state does not have a version because mergeFromProto does not merge but cerate a new instance based on the given proto")
    merged.toProto shouldEqual proto
  }

  private[this] def makeTask(id: String, port: Int, version: Option[String]) = {
    val builder = MarathonTask.newBuilder()
      .addAllPorts(Lists.newArrayList(port))
      .setId(id)

    version.map(builder.setVersion)
    builder.setCondition(MarathonTask.Condition.Staging)

    builder.build()
  }

} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.io

import mesosphere.marathon.test.MarathonSpec
import org.scalatest.{ GivenWhenThen, Matchers }

class IOTest extends MarathonSpec with GivenWhenThen with Matchers {

  test("Compress / unCompress works") {
    Given("A byte array")
    val hello = 1.to(100).map(num => s"Hello number $num!").mkString(", ").getBytes("UTF-8")

    When("compress and decompress")
    val compressed = IO.gzipCompress(hello)
    val uncompressed = IO.gzipUncompress(compressed)

    Then("compressed is smaller and round trip works")
    compressed.length should be < uncompressed.length
    uncompressed should be(hello)
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.api.v2.json

import mesosphere.marathon.api.JsonTestHelper
import mesosphere.marathon.core.readiness.{ HttpResponse, ReadinessCheckResult }
import mesosphere.marathon.core.task.Task
import org.scalatest.{ FunSuite, GivenWhenThen, Matchers }
import play.api.libs.json.Json

class ReadinessCheckResultFormatTest extends FunSuite with Matchers with GivenWhenThen {
  import Formats._

  test("ReadinessCheckResult is convertible to JSON") {
    JsonTestHelper.assertThatJsonOf(Fixture.readinessCheckResult).correspondsToJsonString(Fixture.readinessCheckJson)
  }

  test("ReadinessCheckResult is readable from JSON") {
    val readinessCheckResult = Json.parse(Fixture.readinessCheckJson).as[ReadinessCheckResult]

    readinessCheckResult should equal(Fixture.readinessCheckResult)
  }

  object Fixture {
    val httpResponse = HttpResponse(200, "application/json", "{}")
    val readinessCheckResult = ReadinessCheckResult(
      "readinessCheck",
      Task.Id("/foo/bar"),
      ready = true,
      Some(httpResponse))

    val readinessCheckJson =
      """
        |{
        |  "name": "readinessCheck",
        |  "taskId": "/foo/bar",
        |  "ready": true,
        |  "lastResponse": {
        |    "contentType": "application/json",
        |    "status": 200,
        |    "body": "{}"
        |  }
        |}
      """.stripMargin
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.api.v2

import mesosphere.marathon._
import mesosphere.marathon.api.TestAuthFixture
import mesosphere.marathon.core.election.ElectionService
import mesosphere.marathon.test.{ MarathonSpec, Mockito }
import org.scalatest.{ GivenWhenThen, Matchers }

class LeaderResourceTest extends MarathonSpec with Matchers with Mockito with GivenWhenThen {

  test("access without authentication is denied") {
    Given("An unauthenticated request")
    val f = new Fixture
    val resource = f.leaderResource()
    f.auth.authenticated = false

    When("we try to get the leader info")
    val index = resource.index(f.auth.request)
    Then("we receive a NotAuthenticated response")
    index.getStatus should be(f.auth.NotAuthenticatedStatus)

    When("we try to delete the current leader")
    val delete = resource.delete(f.auth.request)
    Then("we receive a NotAuthenticated response")
    delete.getStatus should be(f.auth.NotAuthenticatedStatus)
  }

  test("access without authorization is denied") {
    Given("An unauthenticated request")
    val f = new Fixture
    val resource = f.leaderResource()
    f.auth.authenticated = true
    f.auth.authorized = false

    When("we try to get the leader info")
    val index = resource.index(f.auth.request)
    Then("we receive a Unauthorized response")
    index.getStatus should be(f.auth.UnauthorizedStatus)

    When("we try to delete the current leader")
    val delete = resource.delete(f.auth.request)
    Then("we receive a Unauthorized response")
    delete.getStatus should be(f.auth.UnauthorizedStatus)
  }

  class Fixture {
    val schedulerService = mock[MarathonSchedulerService]
    val electionService = mock[ElectionService]
    val auth = new TestAuthFixture
    val config = AllConf.withTestConfig("--event_subscriber", "http_callback")
    def leaderResource() = new LeaderResource(electionService, config, auth.auth, auth.auth)
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.api.v2

import mesosphere.chaos.http.HttpConf
import mesosphere.marathon.api.TestAuthFixture
import mesosphere.marathon.core.election.ElectionService
import mesosphere.marathon.storage.repository.FrameworkIdRepository
import mesosphere.marathon.test.{ MarathonSpec, Mockito }
import mesosphere.marathon.MarathonConf
import mesosphere.util.state.MesosLeaderInfo
import org.scalatest.{ GivenWhenThen, Matchers }

class InfoResourceTest extends MarathonSpec with Matchers with Mockito with GivenWhenThen {

  test("access without authentication is denied") {
    Given("An unauthenticated request")
    val f = new Fixture
    val resource = f.infoResource()
    f.auth.authenticated = false

    When("we try to fetch the info")
    val index = resource.index(f.auth.request)

    Then("we receive a NotAuthenticated response")
    index.getStatus should be(f.auth.NotAuthenticatedStatus)
  }

  test("access without authorization is denied") {
    Given("An unauthorized request")
    val f = new Fixture
    val resource = f.infoResource()
    f.auth.authenticated = true
    f.auth.authorized = false

    When("we try to fetch the info")
    val index = resource.index(f.auth.request)

    Then("we receive a NotAuthenticated response")
    index.getStatus should be(f.auth.UnauthorizedStatus)
  }

  class Fixture {
    val leaderInfo = mock[MesosLeaderInfo]
    val electionService = mock[ElectionService]
    val auth = new TestAuthFixture
    val config = mock[MarathonConf with HttpConf]
    val frameworkIdRepository = mock[FrameworkIdRepository]

    def infoResource() = new InfoResource(leaderInfo, frameworkIdRepository, electionService, auth.auth, auth.auth, config)
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.api.validation

import mesosphere.marathon.core.health.{ HealthCheck, MarathonHttpHealthCheck, MesosCommandHealthCheck, MesosHttpHealthCheck }
import mesosphere.marathon.core.plugin.PluginManager
import mesosphere.marathon.state._
import mesosphere.marathon.test.MarathonSpec
import org.scalatest.{ GivenWhenThen, Matchers }

class AppDefinitionMesosHealthCheckValidationTest extends MarathonSpec with Matchers with GivenWhenThen {

  lazy val validAppDefinition = AppDefinition.validAppDefinition(Set.empty)(PluginManager.None)

  test("app with 0 Mesos health checks is valid") {
    val f = new Fixture
    Given("an app with only Marathon Health Checks")
    val app = f.app()

    Then("the app is considered valid")
    validAppDefinition(app).isSuccess shouldBe true
  }

  test("app with 1 Mesos health check is valid") {
    val f = new Fixture
    Given("an app with one health check")
    val app = f.app(healthChecks = Set(MesosCommandHealthCheck(command = Command("true"))))

    Then("the app is considered valid")
    validAppDefinition(app).isSuccess shouldBe true
  }

  test("app with more than 1 non-command Mesos health check is invalid") {
    val f = new Fixture
    Given("an app with one health check")
    val app = f.app(healthChecks = Set(MesosHttpHealthCheck(port = Some(80)), MesosHttpHealthCheck()))

    Then("the app is considered invalid")
    validAppDefinition(app).isFailure shouldBe true
  }

  test("app with more than 1 command Mesos health check is valid") {
    val f = new Fixture
    Given("an app with one health check")
    val app = f.app(healthChecks = Set(
      MesosCommandHealthCheck(command = Command("true")),
      MesosCommandHealthCheck(command = Command("true"))))

    Then("the app is considered valid")
    validAppDefinition(app).isSuccess shouldBe true
  }

  class Fixture {
    def app(healthChecks: Set[_ <: HealthCheck] = Set(MarathonHttpHealthCheck())): AppDefinition =
      AppDefinition(
        id = PathId("/test"),
        cmd = Some("sleep 1000"),
        instances = 1,
        healthChecks = healthChecks
      )
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.marathon.tasks

import mesosphere.marathon.core.instance.TestInstanceBuilder
import mesosphere.marathon.core.instance.update.InstanceUpdateOperation
import mesosphere.marathon.core.launcher.impl.InstanceOpFactoryHelper
import mesosphere.marathon.core.task.Task
import mesosphere.marathon.state.PathId
import mesosphere.marathon.test.{ MarathonSpec, MarathonTestHelper, Mockito }
import org.apache.mesos.{ Protos => Mesos }
import org.scalatest.{ GivenWhenThen, Matchers }

class InstanceOpFactoryHelperTest extends MarathonSpec with GivenWhenThen with Mockito with Matchers {

  test("exception when newTask.taskId and taskInfo.id don't match") {
    val f = new Fixture

    Given("A non-matching task and taskInfo")
    val builder = TestInstanceBuilder.newBuilderWithLaunchedTask(f.runSpecId)
    val task: Task.LaunchedEphemeral = builder.pickFirstTask()
    val taskInfo = MarathonTestHelper.makeOneCPUTask(Task.Id.forRunSpec(f.runSpecId)).build()

    When("We create a launch operation")
    val error = intercept[AssertionError] {
      f.helper.launchEphemeral(taskInfo, task, builder.getInstance())
    }

    Then("An exception is thrown")
    error.getMessage shouldEqual "assumption failed: marathon task id and mesos task id must be equal"
  }

  test("Create a launch TaskOp") {
    val f = new Fixture

    Given("a task and a taskInfo")
    val builder = TestInstanceBuilder.newBuilderWithLaunchedTask(f.runSpecId)
    val instance = builder.getInstance()
    val task: Task.LaunchedEphemeral = builder.pickFirstTask()
    val taskInfo = MarathonTestHelper.makeOneCPUTask(task.taskId).build()

    When("We create a launch operation")
    val launch = f.helper.launchEphemeral(taskInfo, task, instance)

    Then("The result is as expected")
    launch.stateOp shouldEqual InstanceUpdateOperation.LaunchEphemeral(instance)
    launch.taskInfo shouldEqual taskInfo
    launch.oldInstance shouldBe empty
    launch.offerOperations should have size 1
    launch.offerOperations.head.getType shouldEqual Mesos.Offer.Operation.Type.LAUNCH
  }

  class Fixture {
    val runSpecId = PathId("/test")
    val helper = new InstanceOpFactoryHelper(Some("principal"), Some("role"))
  }
} 

//设置package包名称以及导入依赖的类
package mesosphere.mesos

import mesosphere.marathon.tasks.{ PortsMatch, PortsMatcher }
import mesosphere.marathon.test.MarathonTestHelper
import org.scalatest.{ FunSuite, GivenWhenThen, Matchers }

import scala.collection.immutable.Seq

class ResourceMatchTest
    extends FunSuite with GivenWhenThen with Matchers {
  test("resources include all matched reservations") {
    Given("a resource match with reservations")
    val memReservation = MarathonTestHelper.reservation(principal = "memPrincipal", labels = Map("resource" -> "mem"))
    val portReservation = MarathonTestHelper.reservation(principal = "portPrincipal", labels = Map("resource" -> "ports"))

    val resourceMatch = ResourceMatcher.ResourceMatch(
      scalarMatches = Seq(
        GeneralScalarMatch(
          "mem", 128.0,
          consumed = Seq(GeneralScalarMatch.Consumption(128.0, "role1", reservation = Some(memReservation))),
          scope = ScalarMatchResult.Scope.NoneDisk
        )
      ),
      portsMatch = PortsMatch(Seq(Some(PortsMatcher.PortWithRole("role2", 80, reservation = Some(portReservation)))))
    )

    When("converting it to resources")
    val resources = resourceMatch.resources

    Then("the resources should refer to the reservations")
    resources should equal(
      Seq(
        MarathonTestHelper.scalarResource("mem", 128, "role1", reservation = Some(memReservation)),
        MarathonTestHelper.portsResource(80, 80, "role2", reservation = Some(portReservation))
      )
    )
  }
}