本章解释了JUnit中方法的执行过程,它定义了被调用方法的顺序.下面讨论JUnit测试API方法的执行过程和示例.
在C:\> JUNIT_WORKSPACE中创建一个名为ExecutionProcedureJunit.java的java类文件来测试注释.
import org.junit.After; import org.junit.AfterClass; import org.junit.Before; import org.junit.BeforeClass; import org.junit.Ignore; import org.junit.Test; public class ExecutionProcedureJunit { //execute only once, in the starting @BeforeClass public static void beforeClass() { System.out.println("in before class"); } //execute only once, in the end @AfterClass public static void afterClass() { System.out.println("in after class"); } //execute for each test, before executing test @Before public void before() { System.out.println("in before"); } //execute for each test, after executing test @After public void after() { System.out.println("in after"); } //test case 1 @Test public void testCase1() { System.out.println("in test case 1"); } //test case 2 @Test public void testCase2() { System.out.println("in test case 2"); } }
接下来,在C:\\中创建一个名为 TestRunner.java 的java类文件\\&; JUNIT_WORKSPACE执行注释.
import org.junit.runner.JUnitCore; import org.junit.runner.Result; import org.junit.runner.notification.Failure; public class TestRunner { public static void main(String[] args) { Result result = JUnitCore.runClasses(ExecutionProcedureJunit.class); for (Failure failure : result.getFailures()) { System.out.println(failure.toString()); } System.out.println(result.wasSuccessful()); } }
使用javac编译测试用例和测试运行器类.
C:\ _JUNIT_WORKSPACE> javac ExecutionProcedureJunit.java TestRunner.java
现在运行Test Runner,它将运行在提供的测试用例类中定义的测试用例.
C:\ _JUNIT_WORKSPACE> java TestRunner
验证输出.
in before class in before in test case 1 in after in before in test case 2 in after in after class
参见上面的输出.执行过程如下 :
首先,beforeClass()方法只执行一次.
afterClass()方法只执行一次.
对每个测试用例执行before()方法,但在执行测试用例之前.
对每个测试用例执行after()方法,但是在执行测试用例之后.
在before()和after()之间,每个测试用例都会执行./li>