什么是JUnit @Before和@Test [英] What are JUnit @Before and @Test

问题描述

在java中使用Junit @Before 和 @Test 注释有什么用？如何在netbeans中使用它们？

What is the use of a Junit @Before and @Test annotations in java? How can I use them with netbeans?

推荐答案

你能更准确吗？
你需要了解什么是 @Before 和 @Test 注释？

Can you be more precise? Do you need to understand what are @Before and @Test annotation?

@Test 注释是一个注释（自JUnit 4开始），表示附加的方法是单元测试。这允许您使用任何方法名称进行测试。例如：

@Test annotation is an annotation (since JUnit 4) that indicates the attached method is an unit test. That allows you to use any method name to have a test. For example:

@Test
public void doSomeTestOnAMethod() {
  // Your test goes here.
  ...
}

@Before 注释表示附加的方法将在 类中的任何测试之前运行。它主要用于设置测试所需的一些对象：

The @Before annotation indicates that the attached method will be run before any test in the class. It is mainly used to setup some objects needed by your tests:

（编辑为添加导入）：

import static org.junit.Assert.*; // Allows you to use directly assert methods, such as assertTrue(...), assertNull(...)

import org.junit.Test; // for @Test
import org.junit.Before; // for @Before

public class MyTest {

    private AnyObject anyObject;

    @Before
    public void initObjects() {
        anyObject = new AnyObject();
    }

    @Test
    public void aTestUsingAnyObject() {
        // Here, anyObject is not null...
        assertNotNull(anyObject);
        ...
    }

}

这篇关于什么是JUnit @Before和@Test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！