In this example, we will take a look at how we can mock Sling Model Constructor Injection dependencies for a JUnit 4 Unit test. Scenario: The Sling Model must expose either the PROD_URL or the DEAFULT_URL endpoint based on the run mode or request parameters; this is the requirement. The example below will demonstrate the […]
AEM Sling Model Constructor Injection
Sling Models field injection, @inject, are used to support injection of AEM Library-specific context objects. However, there is an alternative way to inject AEM objects into Sling Models, and its called Constructor Injection. The benefits of Sling Model Constructor Injection: Does not store the injection references to the adaptable. Since it does not store injection […]
AEM Sling Model Field Injection vs Constructor Injection Memory Consumption
Article was last updated on June 7th, 2020. Sling Models field injectors are used to support injection of AEM Library-specific context objects. For example, @ScriptVariable SightlyWCMMode will inject the WCMMode object, @ScriptVariable Resource will inject the current resource object, and @ScriptVariable Style will inject the Style object. These objects are typically stored within the object, […]
AEM Sling Model Injectors Annotations Reference Guide
The Apache Sling Model enables injector specific annotations which aggregate the standard annotations for each of the available injector, which are: Script Bindings, Value Map, Resource Path, Child Resources, Request Attributes, OSGI Services, Self, and the Sling Object. Sure we can invoke injectors by the @inject, followed by the @source annotation (with an injector name) […]
AEM Sling Models Injectors Service Ranking
When working on an AEM project, Sling Models provides several custom Sling Models injectors to aid injection of Sling objects, Sling object values, OSGI services, etc… While using the injectors within in Sling Models, how do injectors invoke in order? Injectors are invoked in order, of their service ranking, from lowest to highest. If you […]
JUnit 4: AEM Sling Servlet Unit Test Example Using wcm.io AEM Mocks, Servlet by Resource Type
This article will demonstrate how to write AEM Unit tests for @SlingServletResourceTypes (OSGi DS 1.4 (R7) component property type annotations) using the Junit4 testing framework. With developers being more visual, the source code is posted below. Technologies here used are: AEM project archetype 19 (link) Mockito 2.27.0 (link) AEM Mocks JUnit 4 2.7.2 (link) This […]
JUnit 4: AEM Sling Models Unit Test Example Using wcm.io AEM Mocks
Creating new AEM components, we sometimes need backend logic to compute user requests with business logic. There are multiple ways of doing so, like using the Java-Use API or Javascript-Use API, but the most popular and best practice of writing business logic for an AEM component will be using Sling Models. This article will demonstrate […]
