CODEWITHSUNDEEP
androidjunitrobolectric
John
John

Reputation: 1337

How to clear static method status during junit test

The test function test_init_1() succeed, but test_init_2() fails That is because MyService has been already initialized.

@RunWith(RobolectricTestRunner::class)
class TrackingServiceInitTest {
    @Test
    fun test_init_1() {
        val result = MyService.init(context, id1) 
        assertTrue(result)  // result = `true`
    }

    @Test
    fun test_init_2() {
        val result = MyService.init(context, id2) 
        assertTrue(result)  // AlreadyInitialized Exception has thrown!
    }

    @After
    fun tearDown() {
        // what should I do here to clear MyService's state?
    }
}

MyService looks like:

public class MyService {
    public static synchronized boolean init(Context context) {
        if (sharedInstance != null) {
            Log.d(TAG, "Already initialized!");
            throw new AlreadyInitialized();
        }

        // initializing.. 
        sharedInstance = new CoreService();
        return true
    }
}

How can I clear such status?

Upvotes: 0

Views: 464

Answers (1)

Giorgio Antonioli
Giorgio Antonioli

Reputation: 16214

The right solution would be adding a static method to MyService marked with @VisibleForTesting which releases sharedInstance:

public class MyService {
    public static synchronized boolean init(Context context) {
        if (sharedInstance != null) {
            Log.d(TAG, "Already initialized!");
            throw new AlreadyInitialized();
        }

        // initializing..
        sharedInstance = new CoreService();
        return true;
    }

    @VisibleForTesting
    public static void destroy() {
        sharedInstance = null;
    } 
}

And then in your tearDown you can call MyService.destroy().

Upvotes: 1

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