在 scalatest 中概述场景

Question

我正在使用 scalatest 实现我的测试框架，我认为我使用这个框架而不是 Cucumber 犯了一个错误

我正在尝试使用黄瓜 Scenario outline 的某些功能来避免断干

这是我的问题

  feature("Features of mus client") {
    scenario("GET message with mus client") {
      Given("a Musin message")
      val config: Properties = new Properties
      config.put("method", "POST")
      config.put("encoding", "UTF-8")
      config.put("uri", "http://localhost:9083/musClient")
      When("I make a request to f2e")
      val response = HttpClientTest.request(config, createJSON(READ))
      Then("The message it´s returned successfully")
      assert(response != null)
    }

    scenario("POST message with mus client") {
      Given("a Musin message")
      val config: Properties = new Properties
      config.put("method", "POST")
      config.put("encoding", "UTF-8")
      config.put("uri", "http://localhost:9083/musClient")
      When("I make a request to f2e")
      val response = HttpClientTest.request(config, createJSON(CREATE))
      Then("The message it´s returned successfully")
      assert(response != null)
    }

如您所见，我有两种情况，其中 99% 的步骤相同，但有一个变量会更改请求。

想知道如何在 scalatest 中优雅而高效地做到这一点吗

Answer 1

我也是那些选择 scalatest 而不是黄瓜的人之一，黄瓜对我（我）来说太多了，无法编写功能文件，然后回到 scala/java 文件和相应地改变。维护两个文件。我其实玩的是cucumber java，scala cucumber可能更流畅。无论如何，到目前为止，我喜欢 scalatest 的所有单元测试、组件测试和流测试。

如果像你这样，如果属性对于多个场景是通用的，并且你不会在场景中发生变异，那么定义为通用的属性就可以了，如下所示。

class E2E extends FeatureSpec with GivenWhenThen {
  feature("Features of mus client") {

    Given("http config")
    val config: Properties = new Properties(){{
        put("method", "POST") //you are doing POST in both case by the way
        put("encoding", "UTF-8")
        put("uri", "http://localhost:9083/musClient")
     }}

    scenario("GET message with mus client") {

      When("I make a request to f2e")
      val response = HttpClientTest.request(config, createJSON(READ))

      Then("The message it´s returned successfully")
      assert(response != null)
    }

    scenario("POST message with mus client") {

      When("I make a request to f2e")
      val response = HttpClientTest.request(config, createJSON(CREATE))

      Then("The message it´s returned successfully")
      assert(response != null)

    }
  }
}

但是， 您可能还想使用 property based testing for the only part that changes, property based check was very fluent and readable in spock framework。

属性基于 scalatest 的检查如下所示，我正在测试两个不同的输入参数。（你需要 import org.scalatest.prop.TableDrivenPropertyChecks._）

class TestE2E extends FeatureSpec with GivenWhenThen {

  val requestResponse =
    Table(
      ("request", "response"),
      (  "GET",   "GET-something"),
      ( "POST",   "POST-something")
    )

  feature("testMe") {

    forAll (requestResponse) { (givenRequestFromTable: String, expectedResponseFromTable: String) =>

      scenario("for input " + givenRequestFromTable) {

        When("input is " + givenRequestFromTable)
        val output = testMe(input = givenRequestFromTable)

        Then("responseFromTable has something appended to it")
        assert(output == expectedResponseFromTable)
      }
    }
  }

  def testMe(input: String) : String = {
     input + "-something"
  }
}

根据两个给定的属性会有两种情况，

对于你来说，测试将是基于属性的，希望没有编译错误:)

import org.scalatest.prop.TableDrivenPropertyChecks._
import org.scalatest.prop.Tables.Table
import org.scalatest.{FeatureSpec, GivenWhenThen}

class PaulWritesSpecs extends FeatureSpec with GivenWhenThen {

  val requestResponse =
    Table(
      ("httpMethod", "requestType"),
      ("GET", READ),
      ("POST", CREATE))

  feature("Features of mus client") {

    forAll(requestResponse) { (httpMethod: String, requestType: String) => {

        scenario(s"$httpMethod message with mus client") {

          Given("http config")
          val config: Properties = new Properties() {{
            put("method", httpMethod)
            put("encoding", "UTF-8")
            put("uri", "http://localhost:9083/musClient")
          }}

          When("I make a request to f2e")
          val response = HttpClientTest.request(config, createJSON(requestType))

          Then("The message it´s returned successfully")
          assert(response != null)
        }
      }
    }
  }
}

在 scalatest 中概述场景

Scenario outline in scalatest

scala

cucumber

scalatest