LoginActivityTest.java

package ph.devcon.android.test.login;

import android.test.ActivityInstrumentationTestCase2;
import android.test.suitebuilder.annotation.MediumTest;

import java.util.List;

import javax.inject.Inject;

import dagger.ObjectGraph;
import ph.devcon.android.DevConApplication;
import ph.devcon.android.R;
import ph.devcon.android.auth.AuthService;
import ph.devcon.android.login.LoginActivity;
import ph.devcon.android.test.base.DevConTestModule;
import ph.devcon.android.test.base.Mocker;

import static com.google.android.apps.common.testing.ui.espresso.Espresso.onView;
import static com.google.android.apps.common.testing.ui.espresso.action.ViewActions.click;
import static com.google.android.apps.common.testing.ui.espresso.action.ViewActions.scrollTo;
import static com.google.android.apps.common.testing.ui.espresso.action.ViewActions.typeText;
import static com.google.android.apps.common.testing.ui.espresso.matcher.ViewMatchers.withId;

/**
 * Created by lope on 11/16/14.
 */

@MediumTest
public class LoginActivityTest extends ActivityInstrumentationTestCase2<LoginActivity> {
    DevConApplication mApplication;
    @Inject
    AuthService authService;

    public LoginActivityTest() {
        super(LoginActivity.class);
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        mApplication = DevConApplication.getInstance();
        mApplication.setGraph(ObjectGraph.create(getModules().toArray()));
        DevConApplication.injectMembers(this);
        authService.logout();
        getActivity();
    }

    @MediumTest
    public void testLoginValidUser() {
        onView(withId(R.id.edt_email_address))
                .perform(typeText(Mocker.USERNAME_VALID));
        onView(withId(R.id.edt_password))
                .perform(typeText(Mocker.PASSWORD_VALID));
        onView(withId(R.id.btn_login)).perform(scrollTo(), click());
    }

    protected List<Object> getModules() {
        List<Object> appModules = mApplication.getModules();
        appModules.add(new DevConTestModule());
        return appModules;
    }
}