@BeforeClass和继承 - 执行顺序 [英] @BeforeClass and inheritance - order of execution

问题描述

我有一个抽象基类，我将其用作单元测试的基础（TestNG 5.10）。在这个类中，我初始化了测试的整个环境，设置了数据库映射等。这个抽象类有一个带有 @BeforeClass 注释的方法，用于初始化。 / p>

接下来，我使用特定的类扩展该类，其中我有 @Test 方法以及 @BeforeClass 方法。这些方法对类环境进行特定于类的初始化（例如，将一些记录放入数据库中）。

如何强制执行的特定订单@BeforeClass 带注释的方法？我需要抽象基类中的那些在扩展类之前执行。

示例：

 抽象类A {
 @BeforeClass 
 doInitialization（）{...} 
} 
 
 B类扩展A {
 @BeforeClass 
 doSpecificInitialization（）{...} 
 
 @Test 
 doTests（）{...} 
} 
  

预期订单：

  A.doInitialization 
 B.doSpecificInitialization 
 B.doTests 
  

实际订单：

  B.doSpecificInitialization //<  - 崩溃，因为基本init缺少
（A.doInitialization / /< ---未执行
 B.doTests）//<  -  / 
  

解决方案

不要在 abstract 类上放置 @BeforeClass 。从每个子类调用它。

 抽象类A {
 void doInitialization（）{} 
} 
 
 B类扩展A {
 @BeforeClass 
 void doSpecificInitialization（）{
 super.doInitialization（）; 
} 
 
 @Test 
 void doTests（）{} 
} 
  

似乎TestNG有 @BeforeClass（dependsOnMethods = {doInitialization}） - 试一试。

I have an abstract base class, which I use as a base for my unit tests (TestNG 5.10). In this class, I initialize the whole environment for my tests, setting up database mappings, etc. This abstract class has a method with a @BeforeClass annotation which does the initialization.

Next, I extend that class with specific classes in which I have @Test methods and also @BeforeClass methods. These methods do class-specific initialization of the environment (e.g. put some records into the database).

How I can enforce a specific order of the @BeforeClass annotated methods? I need the ones from the abstract base class to be executed before the ones of the extending class.

Example:

abstract class A {
    @BeforeClass
    doInitialization() {...}
}

class B extends A {
    @BeforeClass
    doSpecificInitialization() {...}

    @Test
    doTests() {...}
}

Expected order:

A.doInitialization
B.doSpecificInitialization
B.doTests

Actual order:

B.doSpecificInitialization // <- crashes, as the base init is missing
(A.doInitialization        // <---not executed
 B.doTests)                // <-/

解决方案

Don't put the @BeforeClass on the abstract class. Call it from each subclass.

abstract class A {
    void doInitialization() {}
}

class B extends A {
    @BeforeClass
    void doSpecificInitialization() {
        super.doInitialization();
    }

    @Test
    void doTests() {}
}

Seems like TestNG has @BeforeClass(dependsOnMethods={"doInitialization"}) - give it a try.

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