Pass junit testname into guice injected objects

Question

I am writing a webDriver end to end test framework using junit 4 and guice for injection.

I want to pass the test name into my driverFactory so that I can use it to name the test properly in Saucelabs:
in my AbstractTest (used by currently all tests) I use

    @Rule
    public TestName name = new TestName();

and

    @Before
    public void before() {
    System.setProperty("testName", name.getMethodName());
    // This is unfortunately, the only way I have managed to make the test name available to the configuration factory
    Guice.createInjector(new TestModule()).injectMembers(this);

I can then retrieve this value from inside my TestModule constructor using

    testConfig.setTestName(System.getProperty("testName"));

I tried many other approaches to make my testName available to the TestModule where I can make it available to other classes. The all fall over for basically the same reason:

I can set a field in the test module created here, but the first time that a TestModule is injected, it is second new instance and it is this second instance that is now injected without the correct field value.

I would prefer another strategy than setting a System property but I failed hopelessly. Can anyone suggest anything better?

(If its relevant I am running my tests in parallel from Gradle)

Answer 1

You can use BoundFieldModule for this:

@Rule @Bind
public final TestName name = new TestName();


@Before
public void injectMembers() {
  Guice.createInjector(
      BoundFieldModule.of(this);
      new TestModule())
      .injectMembers(this);
}