CODEWITHSUNDEEP
androidtestingandroid-intentandroid-espresso
rafael
rafael

Reputation: 732

Espresso startActivity that depends on Intent

I have the following situation.

My activity has a fragment that depends of a Serializable Object. Here is my onCreate:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    MyObject myObj = (MyObj) getIntent().getSerializableExtra("myobj");

    if(myObj != null) {
        FragmentManager manager = getSupportFragmentManager();
        FragmentTransaction transaction = manager.beginTransaction();
        transaction.add(R.id.container, MyFragment.newInstance(myObj));
        transaction.commit();
    }
}

But in my Espresso test I simply can't pass the intent to the activity before it's created. I tried with setActivityIntent in several ways but cant figure out how to make it work.

Here is my last attempt:

import android.content.Intent;
import android.support.test.InstrumentationRegistry;
import android.support.test.espresso.Espresso;
import android.test.ActivityInstrumentationTestCase2;
import org.junit.Before;

import static android.support.test.espresso.assertion.ViewAssertions.matches;
import static android.support.test.espresso.matcher.ViewMatchers.withId;
import static android.support.test.espresso.matcher.ViewMatchers.withText;

public class MyActivityTest extends

     ActivityInstrumentationTestCase2<MyActivity> {

        private MyActivity activity;
        private MyObject myObj;

        public MyActivityTest() {
            super(MyActivity.class);
        }

        @Before
        protected void setUp() throws Exception {
            super.setUp();
            injectInstrumentation(InstrumentationRegistry.getInstrumentation());
            myObj = MyObject.mockObject();
            Intent i = new Intent();
            i.putExtra("myobj", myObj);
            setActivityIntent(i);

        }

        public void testName(){
            Espresso.onView(withId(R.id.name)).check(matches(withText(myObj.getObjName())));
        }

    }

I've searched a lot but nothing works. MyObject is always null in the test. I think this should be simple. What am I'm missing?

Upvotes: 27

Views: 21778

Answers (4)

Top-Master
Top-Master

Reputation: 8735

Update 2022;

import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;

import androidx.test.core.app.ActivityScenario;
import androidx.test.internal.runner.junit4.AndroidJUnit4ClassRunner;

@RunWith(AndroidJUnit4ClassRunner.class)
public class MyTest extends Assert {

@Test
public void testMyMethod_shouldBlaBlaBla() {
    Intent myIntent = ...;
    ActivityScenario.launch(myIntent).onActivity(activity -> {
        // Tests go here, which runs on UI-Thread.
        assertTrue(false);
    });
}

}

Note that @UiThreadTest (i.e. androidx.test.annotation.UiThreadTest) is NOT used.

Upvotes: 0

Gabriele Mariotti
Gabriele Mariotti

Reputation: 363439

You can define the Intent to be used in this way

@RunWith(AndroidJUnit4.class)
public class MyActivityTestTest {

    private MyObject myObj;

    @Rule
    // third parameter is set to false which means the activity is not started automatically
    public ActivityTestRule<MyActivity> mActivityRule =
        new ActivityTestRule<>(MyActivity.class, false, false);


    @Test
    public void testName() {

          myObj = MyObject.mockObject();
          Intent i = new Intent();
          i.putExtra("myobj", myObj);
          mActivityRule.launchActivity(i);

         //...
    }

}

Upvotes: 41

makovkastar
makovkastar

Reputation: 5020

You can override the ActivityTestRule.getActivityIntent() method and return a required Intent:

@Rule
public ActivityTestRule<MyActivity> mActivityRule =
        new ActivityTestRule<MyActivity>(MyActivity.class){

    @Override
    protected Intent getActivityIntent() {
        Intent intent = new Intent();
        intent.putExtra("myobj", myObj);
        return intent;
    }
};

Upvotes: 16

yogurtearl
yogurtearl

Reputation: 3065

It doesn't look like you are actually starting the activity anywhere.

Try calling getActivity() on the first line of testName().

This will launch the activity that you passed into the super constructor.

Upvotes: 0

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