2016-03-05 49 views
-1

我在Administrator.java中写了一个方法deleteProject(Project project),它将项目设置为null。在此之后,我尝试编写一个调用deleteProject(Project project)方法的测试方法,并检查Object项目== null。不是这种情况。我已将3个system.out.println(项目)放入方法中。如果查看输出项目,在deleteProject(Project项目)中将项目设置为null,但由于某些原因,它仍然以AdministratorTest打印。JUnit test删除方法Object设置为null后不为空

我不明白为什么项目不保留为空。

AdministratorTest.java

@Before 
public void setUp() throws Exception { 
    admin1 = new Administrator("Sponge", "Bob", "Squarepants", "Spongy");  
    project = admin1.createProject(new VersionID(2, 3), "ProjectX", "Secret", new Date(93, 10, 17));   
} 

@After 
public void tearDown() throws Exception { 
    admin1 = null;  
    project = null; 
} 

@Test 
public void testDeleteProject() { 
    assertEquals("2.3", project.getVersion().toString()); 
    assertEquals("ProjectX", project.getName()); 
    assertEquals("Secret", project.getDescription()); 
    assertEquals("Wed Nov 17 00:00:00 CET 1993", project.getStartDate().toString()); 
    admin1.deleteProject(project); 
    System.out.println(project); 
    assertNull(project); 
} 

Administrator.java

public void deleteProject(Project project) {  
    System.out.println(project);   
    project = null; 
    System.out.println(project);   
} 

输出

[email protected] 
null 
[email protected] 

回答

1

设置吨他将参数项目设置为null,方法deleteProject对您给该方法的对象不做任何处理。它只是改变deleteProject结束时超出范围的参数。