androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2.2' androidTestCompile 'com.android.support.test:runner:0.5'
ViewMatchers – A collection of objects that implement
Matcher<? super View> interface. You can pass one or more of these to the
onView method to locate a view within the current view hierarchy.
ViewActions – A collection of
ViewActions that can be passed to the
ViewInteraction.perform() method (for example,
ViewAssertions – A collection of
ViewAssertions that can be passed the
ViewInteraction.check() method. Most of the time, you will use the matches assertion, which uses a View matcher to assert the state of the currently selected view.
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