AEM Mocks: Cannot Inject Config - unit-testing

Question

I am using AEM Mocks to test a custom servlet that uses a configuration, as such:
#Activate
void activate(final Config config) { ... }
I am following the approach described here and here to register and inject the service together with a HashMap, as such:
private static Map<String, Object> myHashMap = new HashMap<>();
...
myHashMap.put("a", "b");
myHashMap.put("c", "d");
...
servlet = context.registerInjectActivateService(new MyServlet(), myHashMap);
However, this approach doesn't work. The config object passed above, inside the activate function, is corrupted. For every key-value pair above, it sets null as the value. So instead of:
a -> b
c -> d
It sets:
a -> null
c -> null
Inside the HashMap. Can anyone please help? Thanks!
P.S. I should add that I am using version 2.3.0 of AEM Mocks since the recent versions cause an issue with an older artifact. For more info on that, see here.

Answer 1

I tested it, and it works with version 2.3.0 too. Could you check the following example? After that, it is probably a maven issue. Then we would need more information.
Here is my test servlet:
#Component(service = Servlet.class,
property = {
SLING_SERVLET_PATHS + "=/bin/servlet/test",
SLING_SERVLET_METHODS + "=GET",
SLING_SERVLET_EXTENSIONS + "=text"
})
#Designate(ocd = TestServlet.Config.class)
public class TestServlet extends SlingSafeMethodsServlet {
#ObjectClassDefinition
public #interface Config {
#AttributeDefinition(
name = "Name",
description = "Name used in the hello world text"
)
String name() default "Alex";
#AttributeDefinition(
name = "Greeting",
description = "Greeting - Morning, to demonstrate the dot-replacement"
)
String greeting_morning() default "Good Morning";
}
private Config config;
#Override
protected void doGet(#Nonnull SlingHttpServletRequest request, #Nonnull SlingHttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/plain");
response.setCharacterEncoding("utf-8");
response.getWriter().println(this.getGreeting());
}
public String getGreeting() {
return config.greeting_morning() + ", " + config.name();
}
#Activate
void activate(final Config config) {
this.config = config;
}
}
Here is a JUnit 4 test:
public class TestServletTest {
#Rule
public final AemContext context = new AemContext();
#Test
public void testWithoutConfig() {
final TestServlet testServlet = context.registerInjectActivateService(new TestServlet());
assertEquals("Good Morning, Alex", testServlet.getGreeting());
}
#Test
public void testWithConfig() {
final Map<String, Object> properties = new HashMap<>();
properties.put("name", "Berndt");
properties.put("greeting.morning", "Keep sleeping");
final TestServlet testServlet = context.registerInjectActivateService(new TestServlet(), properties);
assertEquals("Keep sleeping, Berndt", testServlet.getGreeting());
}
}