如何在JUnit中初始化私有字段,以便在测试方法时,将使用私有字段的值。如您所见,private String searchDate
中使用了GetSkillListServiceCustomize
,但searchDate
尚未初始化,因此测试失败。我尝试使用反射,但它会抛出NoSuchFieldException:
。 GetSkillListServiceCustomizeTest.class
是我的JUnit课程,而另一个是我正在测试的课程。
的 GetSkillListServiceCustomizeTest.class
try {
Field reader = GetSkillListServiceCustomize .class.getDeclaredField("searchDate ");
reader.setAccessible(true);
StringReader stringReader = new StringReader("2017-01-28");
BufferedReader readerToSet = new BufferedReader(stringReader);
reader.set(testClass, readerToSet);
returnVal = testClass.processOutput(mapVar);
} catch (NoSuchFieldException e1) {
e1.printStackTrace();
} catch (SecurityException e1) {
e1.printStackTrace();
}
assertTrue(returnVal != null);
}
GetSkillListServiceCustomize.class
public class GetSkillListServiceCustomize
extends GetSkillListService
implements ServiceIF<GetSkillListInputDTO, GetSkillSummaryDisplayDTO> {
private String searchSite;
private String searchDate;
...more codes
protected GetSkillListOutputDTO processOutput(Map<String, Object> resultMap)
throws ServiceDBException, ServiceAppException {
...//more codes
List<GetSkillListOutputDTOList> getskilllistoutputdtolistTmpWrap = null;
if (employeeMasterList != null && !employeeMasterList.isEmpty()) {
getskilllistoutputdtolistTmpWrap = new ArrayList<>();
}
if (employeeMasterList != null && !employeeMasterList.isEmpty()) {
List<EMPLOYEE_MASTER> empMasterlistNoDeleted = employeeMasterList.stream()
.filter(e -> {
try {
return (e.getDel_Datetime() == null
|| (sdf.parse(e.getDel_Datetime())
.compareTo(sdf.parse(this.searchDate)) > 0));
} catch (ParseException ex) {
ex.printStackTrace();
return false;
}
})
.collect(Collectors.toList());
...//more codes in the bottom
答案 0 :(得分:3)
JUnit为init方法@Before
提供标记。在init方法中,您可以初始化几乎所有您想要的东西。为了有用访问私有字段,我建议使用第三方工具,例如
<!-- https://mvnrepository.com/artifact/org.springframework/spring-test -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.10.RELEASE</version>
<scope>test</scope>
</dependency>
在您的测试中,您可以将setter用于私有字段,如下所示:
@Before
public void setUp() {
org.springframework.test.util
.ReflectionTestUtils.setField(
theGetSkillListServiceCustomizeInstance,
"searchSite",
"valueToSet");
}
答案 1 :(得分:1)
我建议为这个字段创建一个setter,并发表评论说这个setter仅用于单元测试。
答案 2 :(得分:-2)
我建议在类的构造函数中初始化私有字段。