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Junit for sling models based on Delegation Pattern

Forum|Forum|2 years ago
January 24, 2023
1 reply
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Hi Team,

We are trying to create junit for sling models where delegate pattern was used, but the core class reference always returns null.Is there any better way to create junit for such use case. Detailed error : java.lang.NullPointerException: Cannot invoke "com.adobe.cq.wcm.core.components.models.Navigation.getAccessibilityLabel()" because "this.navigation" is null.

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Best answer by nitesh_kumar-1

Hi @nehama ,

You can check the WKND project example for ImageList, It injects "com.adobe.cq.wcm.core.components.models.List"

https://github.com/adobe/aem-guides-wknd/blob/main/core/src/test/java/com/adobe/aem/guides/wknd/core/models/impl/ImageListImplTest.java

Hope this helps!

Regards,

Nitesh

nitesh_kumar-1

Accepted solution

Adobe Employee

Hi @nehama ,

You can check the WKND project example for ImageList, It injects "com.adobe.cq.wcm.core.components.models.List"

https://github.com/adobe/aem-guides-wknd/blob/main/core/src/test/java/com/adobe/aem/guides/wknd/core/models/impl/ImageListImplTest.java

Hope this helps!

Regards,

Nitesh

N

NehaMaAuthor

Level 4

hi @nitesh_kumar-1 - Let us try once and get back

N

NehaMaAuthor

Level 4

hi @arunpatidar - Have tried above, bit it gives

01:27:12.041 [main] DEBUG org.apache.sling.testing.mock.sling.MockAdapterManagerImpl - Using adapter factory org.apache.sling.models.impl.ModelAdapterFactory@4232b34a to map org.apache.sling.testing.mock.sling.servlet.MockSlingHttpServletRequest@2da16263 to class test.models.components.CustomTeaser

java.lang.NullPointerException

at test.models.components.CustomTeaser.getTitle(CustomTeaser.java:55)

at test.models.components.CustomTeaserTest.testCustomTeaser(CustomTeaserTest.java:40)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.base/java.lang.reflect.Method.invoke(Method.java:566)

at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686)

at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)

at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)

at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)

at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)

at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)

at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)

at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)

at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)

at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)

at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)

at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)

at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)

at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)

at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:212)