Espresso for Android is perfect and fast test automation framework, but it has one important limitation - you are allowed to operate only inside your app under test context.
That means that it is not possible to automate tests for such app features like:
application push notificationscontact synchronizationnavigating from another app to your app under test,
since you have to deal with other apps from the mobile device - Notification Bar, Contacts or People app, etc.
In fact it wasn't possible until the release of UIAutomator 2.0. As stated in Android Developers blog post - "...Most importantly, UI Automator is now based on Android Instrumentation...". And because of that we can run UIAutomator tests as well as Espresso tests using Instrumentation test runner.
In addition to that we can combine UIAutomator tests together with Espresso tests and this gives us the real power and control over the phone and application under test.
After more than a month of using great test tool from Google - Espresso for Android, I'd like to share with you some of my experience. I assume that you've already added espresso jar into your project, spent some time playing with Espresso samples and have basic understanding how this tool works.
In this post I'll show how to match particular view with text or assert that it contains (or not) specified Strings. Before we start, you have to take a look at Hamcrest matchers - Hamcrest tutorial and API Reference Documentation, which are used together with Espresso's ViewAssertions and ViewMatchers and included into Espresso standalone library. Pay more attention to Matcher<java.lang.String> matchers.
So, here we go. For simplicity following String "XXYYZZ" will be used as a expected text pattern.
Espresso ViewMatchers class implements two String matcher methods withText() and withContentDescription() which will match a view which text is equal to specified…
Just a small post from my recent experience - how to test that AlarmManager has an alarm set.
The first approach is to do it programmatically - let's assume we registered our alarm as below: Intent intent = new Intent("com.my.package.MY_UNIQUE_ACTION");
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0,
Calendar calendar = Calendar.getInstance();
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 1000 * 60, pendingIntent);
And now to check that registered above alarm is active we have to do the following:
boolean alarmUp = (PendingIntent.getBroadcast(context, 0,