执行Junit测试时，如何在AEM吊索模型中的节点对象中设置属性()?

Question

我尝试在我的单元测试中的节点类中设置属性，但无法这样做。如果您之前碰巧这样做过，我想寻求您的帮助，分享您在AEM Sling MOdel中设置节点属性以进行单元测试的知识。谢谢！

实现如下：

@Model(adaptables = SlingHttpServletRequest.class)
public class SlingModelClass {
@Inject
private SomeService someService;
private boolean isShowCaptcha;
@SlingObject
private Resource resource;
private Node node;
@PostConstruct
public void setup() {
node = resource.adaptTo(Node.class);
isShowCaptcha = someService.isCaptchaHide();
hideShowTitle(!isShowCaptcha);       <= Test unable to get through this method
}
public boolean getIsShowCaptcha() {
return this.isShowCaptcha;
}
public PropertyIterator getPropertiesItems() throws RepositoryException {
return this.node.getProperties();
}
private void hideShowTitle(boolean flag) {
try {
node.setProperty("hideTitle", flag);     <= I am getting a null pointer exception at this line
if(flag) {
node.setProperty("guideNodeClass", "");
} else {
node.setProperty("guideNodeClass", "guideCaptcha");
}
node.getSession().save();
} catch (RepositoryException e) {
e.printStackTrace();
}
}
}

我写的单元测试：

public class SlingModelClassTest {
@Rule
public final AemContext context = new AemContext();
@Mock
private SomeService someService = mock(SomeService .class);
@Mock
Resource resource;
// injects all the mocks into the tested object.
@InjectMocks
private SlingModelClass slingModelClass;
private Node node;
private static String PATH = "/content/testproject/en/page/sub-page";
@Before
public void setUp() {
context.addModelsForPackage("de.com.adsl.sightly.model");
context.load().json("/components/textrte.json", PATH);
context.currentPage(PATH);
resource = mock(Resource.class);
}
@Test
public void testSetup() {
context.registerService(SomeService.class, someService);
slingModelClass.setup();
}

错误如下：

java.lang.NullPointerException
at de.com.adsl.sightly.model.SlingModelClassTest.aaa(SlingModelClassTest.java:85)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:54)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:305)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:365)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:330)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:78)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:328)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:65)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:292)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:305)
at org.junit.runners.ParentRunner.run(ParentRunner.java:412)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Answer 1

这是错误的模式。吊索模型不应改变JCR节点。每次实例化 Sling 模型时，它都会对存储库执行写入操作，这可能会遇到大麻烦。吊索模型只是应该从JCR读取。

如果需要一些全局标志，请使用页面属性和继承来读取标志并在必要时覆盖它。这样，配置以受控方式完成，并且仅在必要时写入属性。

只是为了完成我的答案，正如@OliverGebert所建议的那样：Sling API 应该用于处理存储库数据/作为抽象层。JCR API被认为级别太低，AEM基本上建立在Sling之上。此外，您需要负责管理 Sling 以及 JCR 依赖项，这在长期项目中可能是一个很大的麻烦。