Question

我是Specs2的新手。我阅读了specs2文档，但它有点令人困惑。我不知道它是否可能。

所以我的Specs2测试代码大致如下：

"DataServiceTest" should {
  "InsertNewData" in {
    val name = "some name here"
    val description = "some description here"

    // Assumed DataService.insertNewData method execute the insertion
    // and returns "Data" model.
    Data data = DataService.insertNewData(name, description)

    // Checking of equality here
    data.name === name
    data.description === description

    // Assumed the "Data" model has List[SubData] property "subData"
    // and the code below is checking the List[SubData]
    data.subData.foreach {
        ...
    }

    success
  }
}

1。有没有办法为这些部分提供信息？

data.name === name
data.description === description

像"Checking data's name" in { data.name === name }这样的东西。因此，无论测试成功还是失败，消息都将在输出屏幕上显示。

2. 有没有办法将子代码分组到＆＃34; InsertNewData＆＃34;通过这样的短信：

"DataServiceTest" should {
  "InsertNewData" in {
    val name = "some name here"
    val description = "some description here"

    // Assumed DataService.insertNewData method execute the insertion
    // and returns "Data" model.
    Data data = DataService.insertNewData(name, description)

    "Checking basic properties of Data" in {
        // Checking of equality here
        data.name === name
        data.description === description
    }

    "Checking subData" in {
        // Assumed the "Data" model has List[SubData] property "subData"
        // and the code below is checking the subData

        data.subData must have size(3)

        data.subData.foreach {
            ...
        }

    }
    success
  }
}

更新

基于这里的答案之一，我尝试了这个：

"Checking of equality" ! e1

def e1 = {
        data.name === name
        data.description === description
        failure
}

它没有工作，因为它应该失败。但是测试结果全部通过了。

更新＃2：

我做了一些嵌套in块的实验：

"DataServiceTest" should {
    "my test" in {

      "hello test" in {    // this block is not executed
        "hello" !== "hello"
        success
      }

      "world" === "world"
      success
    }
}

结果是成功，但由于"hello" !== "hello"它应该失败。从控制台屏幕看，没有＆＃34;你好测试＆＃34;消息，所以似乎嵌套in块没有被执行。

更新＃3：

根据埃里克编辑的答案，我编辑了更新＃2中的代码：

"DataServiceTest" >> {
    "my test" >> {

        "hello test" >> {    // this block is not executed
            "hello" !== "hello"
            success
        }

        "world" === "world"
        success
    }
}

同样的结果，"hello test"嵌套块没有被执行。

Answer 1

您可能会发现Specs2指南很有帮助： https://etorreborre.github.io/specs2/guide/org.specs2.guide.Structure.html#Expectations

在指南中寻找“期望”。

Answer 2

Spec2将显示如果满足条件，您的测试将通过。不会生成任何消息，通常这就足够了。如果你的测试套件变得足够大，那么积极的消息就会变得很多。无论如何，你对失败更感兴趣。

默认情况下，Spec2会生成清除消息，并且将使用变量名称，实际值以及它应该是什么。但如果这还不够好，您可以设置自定义消息。如何做到这一点可以在this stackoverflow answer

如果您仍想生成消息，可以使用print语句和记录器。但我建议你不要这样做。

我会重构两个不同的测试：

"DataServiceTest"
should {
  "InsertNewData should have correct basic properties" in {
    // Arrange 
    val name = "some name here"
    val description = "some description here"

    // Act
    // Assumed DataService.insertNewData method execute the insertion
    // and returns "Data" model.
    Data data = DataService.insertNewData(name, description)

    // Assert
    // Checking of equality here
    data.name === name
    data.description === description
  }

  "InsertNewData should have correct subData" in {
    // Arrange 
    val name = "some name here"
    val description = "some description here"

    // Act
    // Assumed DataService.insertNewData method execute the insertion
    // and returns "Data" model.
    Data data = DataService.insertNewData(name, description)

    // Assert
    // Assumed the "Data" model has List[SubData] property "subData"
    // and the code below is checking the 
    data.subData must have size(3)

    data.subData.foreach {
      ...
    }
  }
}

Answer 3

基于一个＆＃34; ACT＆＃34;创建小例子的简单方法电话是使用像这样的懒惰的val：

"DataServiceTest should" >> {
  "InsertNewData" >> {
    val name = "some name here"
    val description = "some description here"

    // Assumed DataService.insertNewData method execute the insertion
    // and returns "Data" model.
    lazy val data = DataService.insertNewData(name, description)

    "name must be ok" >> {
      data.name === name
    }
    "description must be ok" >> {
      data.description === description
    }

    "subdata must be ok" >> {
       data.subData.foreach {
       ...
       }
       success
    }
 }

在Specs2测试块中添加消息

3 个答案: