Specs2-如何为给定/何时/然后步骤定义复杂对象 [英] Specs2 - How to define complex objects for Given/When/Then steps

问题描述

Specs2的文档和示例显示了一些有关在验收测试中使用Given / Then / When样式的代码。

Specs2's documentation and samples show some codes about the use of Given/Then/When style in an acceptance test.

这里是其中之一：

"A given-when-then example for the addition"                   ^
    "Given the following number: ${1}"                         ^ number1 ^
    "And a second number: ${2}"                                ^ number2 ^
    "And a third number: ${3}"                                 ^ number3

  val number1: Given[Int]               = (_:String).toInt
  val number2: When[Int, (Int, Int)]    = (n1: Int) => (s: String) => (n1, s.toInt)
  val number3: When[Seq[Int], Seq[Int]] = (numbers: Seq[Int]) => (s: String) => numbers :+ s.toInt

但是，它只处理某些基本对象，如 Int 在这里（由于是示例，因此是正常的。）

However, it only deal with some primitive objects as Int here (normal since it's a sample).

但是如何处理复杂的对象？使用 Datatables ？

But how to deal with complex objects? Using Datatables?

理想的方法是在夹具文件中定义数据表（或类似的东西） ）定义复杂的对象。

Ideal would be to define, within some file of "fixtures", datatables (or similar things) defining complex objects.

定义 User Mik

External datatable defining the User "Mik"

"name" |   "job"    | "e-mail"
"mik"  | "engineer" | "[e-mail]"

我想创建一个类似以下的给定语句：

I would like to create a Given statement like this one:

"Given the following user: ${Mik}"       ^ retrieve_user_from_database ^

val user: Given[User]               = .....Some ideal codes here to map Mik's values to User model.

什么是优良作法？Specs2当前提供了什么？

What is a good practice and what does Specs2 currently provide?

推荐答案

如果要从现有数据库中检索用户，可以执行以下操作：

If you want to retrieve a user from an existing database, you can do the following:

"Given the following user: ${Mik}" ^ user ^

val user: Given[User] = (name: String) => database.getUserByName(name) 

现在，您可能需要在用户之前填充数据库。确实有一种可能是使用数据表：

Now you might want to populate your database with users before doing that. One possibility is indeed to use Datatables:

def populateDatabase = 
  "name" ||   "job"    | "e-mail"        |
  "mik"  !! "engineer" ! "[e-mail]"   |
  "eric" !! "engineer" ! "[e-mail]" | { (name, job, email) => 
    database.saveUser(User(name, job, email)) must not(throwAn[Exception])
  }

，并将其放入G / W / T组之前的步骤：

and put this in a Step before your G/W/T group:

Step(populateDatabase) ^
"Given the following user: ${Mik}"  ^ user ^
"This user should be an ${engineer} ^ jobOk ^
                                      end

val user: Given[User] = (name: String) => database.getUserByName(name)
val jobOk: Then[User] = (user: User) => (job: String) => user.job must_== job

这篇关于Specs2-如何为给定/何时/然后步骤定义复杂对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！