Wired Integration Test: How to inject objects? Edited

[Frank]

I want to write an integration test for my plugin. Following the Atlassian tutorial, I can get a simple integration test run successfully. As soon as I need some classes from the Confluence environment for my test, I am stuck. According to the second section of the above mentioned tutorial, I can use the constructor of the test class to get these injected. I tried that, using the following code:

public class MyTest {
  private final UserManager userManager;
  private final ActiveObjects ao;

  //@Inject
  @Autowired
  public MyTest(@ComponentImport UserManager userManager, @ComponentImport ActiveObjects ao) {
    this.userManager = userManager;
    this.ao = ao;
  }

  @Test
  public void runTest() { }
}

the test fails when run from the Atlassian Plugin Test Console, and in the browser developer console, I find the following in the response for the test API call sent from the console:

...
fThrownException: {detailMessage: "Test class should have exactly one public zero-argument constructor",…}
  detailMessage: "Test class should have exactly one public zero-argument constructor"
...

I tried both Annotations, `@Autowired` and `@Inject`, getting the same result.

I also tried to add an empty constructor in addition to the one shown above so that I have two constructors in the class now:

 public MyTest() {
  this.userManager = null;
  this.ao = null;
}

This avoids the error, but no test is executed, hence this does not help.

Any idea how I can get references to environment objects like UserManager or ActiveObjects in an integration test? 

EDIT:

As I found no solution, I gave up on using the Atlassian provided integrated integration tests, and as an alternative set up a separate project for my integration tests just testing the REST calls using REST Assured.