MainActivityTest.java

package de.tum.in.tumcampusapp.activities;

import android.support.test.filters.LargeTest;
import android.support.test.rule.ActivityTestRule;
import android.support.test.runner.AndroidJUnit4;

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

import de.tum.in.tumcampusapp.R;

import static android.support.test.espresso.Espresso.onView;
import static android.support.test.espresso.assertion.ViewAssertions.matches;
import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;
import static android.support.test.espresso.matcher.ViewMatchers.withText;

@RunWith(AndroidJUnit4.class)
@LargeTest
public class MainActivityTest extends BaseActivityTest {

    @Rule
    public ActivityTestRule<MainActivity> mActivityRule = new ActivityTestRule<>(MainActivity.class);

    @Test
    @Override
    public void mainComponentDisplayedTest() {
        idIsDisplayed(R.id.cards_view);

        onView(withText(R.string.swipe_instruction))
                .check(matches(isDisplayed()));
    }
}