test.java

public class TestMessages extends ActivityTest {


	@Test
    public void writeMessageToContact() throws Exception{

		onView(withId(userFieldId)).perform(typeText("test_user@domain.com"), closeSoftKeyboard());
	    onView(withId(is(passwordFieldId))).perform(scrollTo()).check(matches(isDisplayed())).perform(typeText("mySecretPassword"), closeSoftKeyboard());
	    
	    onView(withId(is(loginButtonId))).perform(scrollTo(), click());

	    openDrawerAndGoToSection(DrawerItem.MESSAGES);

	    onView(withId(R.id.floating_action_button)).check(matches(isDisplayed())).perform(click());

	    onView(withId(com.xing.android.R.id.contact_chooser)).perform(click(), typeText("John Doe"));
	    Thread.sleep(TIMEOUT2);

	    onView(withId(com.xing.android.R.id.editmessage_subject)).perform(typeText("This is the subject"), closeSoftKeyboard());
        Thread.sleep(TIMEOUT2);
        onView(withId(R.id.editmessage_body)).perform(typeText("This is the message body"), closeSoftKeyboard());

        Thread.sleep(500);
        onView(withId(R.id.menu_send)).perform(click());

        Thread.sleep(10000);
        onView(withText(messageSubject)).check(matches(isDisplayed()));

        logoutUser();

        onView(withId(userFieldId)).perform(typeText("john_doe@domain.com"), closeSoftKeyboard());
	    onView(withId(is(passwordFieldId))).perform(scrollTo()).check(matches(isDisplayed())).perform(typeText("my2SecretPassword"), closeSoftKeyboard());
	    
	    onView(withId(is(loginButtonId))).perform(scrollTo(), click());

		openDrawerAndGoToSection(DrawerItem.MESSAGES);

		onView(withText("This is the subject")).check(matches(isDisplayed()));

		onView(withText("This is the subject")).perform(click());

		onView(allOf(withId(R.id.comment_bar_edittext), isDisplayed())).perform(typeText("This is the reply"));

		onView(allOf(withId(com.xing.android.R.id.comment_bar_send_action), isDisplayed())).perform(click());

		logoutUser();

		onView(withId(userFieldId)).perform(typeText("test_user@domain.com"), closeSoftKeyboard());
	    onView(withId(is(passwordFieldId))).perform(scrollTo()).check(matches(isDisplayed())).perform(typeText("mySecretPassword"), closeSoftKeyboard());
	    
	    onView(withId(is(loginButtonId))).perform(scrollTo(), click());

	    openDrawerAndGoToSection(DrawerItem.MESSAGES);

	    onView(withText("This is the subject")).perform(click());

	    onView(withText("This is the reply")).check(matches(isDisplayed()));

	}
}