android - Espresso - How can I check if an activity is launched after performing a certain action?

Question

the following is one of my Espresso test cases.

    public void testLoginAttempt() {
        Espresso.onView(ViewMatchers.withId(R.id.username)).perform(ViewActions.clearText()).perform(ViewActions.typeText("[email protected]"));
        Espresso.onView(ViewMatchers.withId(R.id.username)).perform(ViewActions.clearText()).perform(ViewActions.typeText("invalidpassword"));

        Espresso.onView(ViewMatchers.withId(R.id.login_button)).perform(ViewActions.click());
        // AFTER CLICKING THE BUTTON, A NEW ACTIVITY WILL POP UP.
        // Clicking launches a new activity that shows the text entered above. You don't need to do
        // anything special to handle the activity transitions. Espresso takes care of waiting for the
        // new activity to be resumed and its view hierarchy to be laid out.
        Espresso.onView(ViewMatchers.withId(R.id.action_logout))
                .check(ViewAssertions.matches(not(ViewMatchers.isDisplayed())));

    }

Currently what I did was to check if a view in the new activity (R.id.action_logout) is visibible or not. If visible, I will assume tha the activity opened successfully. But it doesn't seem to work as I expected. Is there a better way to check if a new activity is successfully launched instead of checking a view in that activity is visible? Thanks

Answer 1

You can use:

intended(hasComponent(YourExpectedActivity.class.getName()));

Requires this gradle entry:

androidTestCompile ("com.android.support.test.espresso:espresso-intents:$espressoVersion")

The import for the intended() and hasComponent()

import static android.support.test.espresso.intent.Intents.intended;
import static android.support.test.espresso.intent.matcher.IntentMatchers.hasComponent;

as mentioned by Shubam Gupta please remember to call Intents.init() before calling intended(). You can eventually call it in the @Before method.