package <your_package>;

import android.support.test.espresso.intent.rule.IntentsTestRule;
import android.support.test.runner.AndroidJUnit4;
import android.test.suitebuilder.annotation.LargeTest;

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

import static android.support.test.espresso.intent.Intents.intended;
import static android.support.test.espresso.intent.matcher.ComponentNameMatchers.hasShortClassName;
import static android.support.test.espresso.intent.matcher.IntentMatchers.hasComponent;
import static org.junit.Assert.assertNotNull;

@RunWith( AndroidJUnit4.class )
@LargeTest
public class BeforeLoginActivityTest {
  
    private static final String TEST_EMAIL = "annyce@mycompany.com";
    private static final String TEST_PASSWORD = "123456";
    private static final String PACKAGE_NAME = "my.package";

    @Rule
    public IntentsTestRule<LoginActivity> activityRule =
            new IntentsTestRule<>( LoginActivity.class );

    @Test
    public void shouldProceedLoginWhenValid () {
        onView( withId( R.id.login_username_entry ) ).perform( typeText( TEST_EMAIL ) );
        onView( withId( R.id.login_password_entry ) ).perform( typeText( TEST_PASSWORD ) );
        onView( withId( R.id.login_button ) ).perform( click() );
                    
        intended( hasComponent( hasShortClassName( PACKAGE_NAME ) ) );            
    }
}