tech talk #5 : android automation test with espresso - trần văn toàn
TRANSCRIPT
Table Of Content
About Espresso Espresso Components Test case structure Custom Matcher and ViewAction
About Espresso An user interface testing framework for a
single application Run on devices running Android 2.2 and
higher The Espresso is an instrumentation-based API
and works with the AndroidJUnitRunner test
Espresso - Pros Reliable & synchronizes test actions with UI
operations (on the UI thread). open to customization with standard hamcrest
matchers Clear failure, rich debugging information.
Allows custom failure handler
Espresso - Cons
Does not support for WebView Slow speed since it run on Dalvik VM Work with Single application only. Solution: Using Espresso combine with uiautomator
Espresso Components ViewMatchers: find view based on: id, Tag,
description, text… withId(R.id.button)
ViewActions: perform actions on the views click(), scrollTo()
ViewAssertions: validate state of a view.matches(isDisplayed()), doesNotExist()
Test case structure
Find View Find the UI component under test in
an Activity by using the onView() or onData() method with a view matcher which selects the correct view.
Perform Actions Call perform() method and passing in the
user action defined by ViewActions class. Repeat the steps to simulate a user flow
across multiple activities in the target app
Validate the results Call check() method to check expected
state or behavior check() method requires a ViewAssertion
object as input
Custom Matcher & ViewAction Custom Matcher using BoundedMatcher or Hamcrest framework
Custom Matcher & ViewAction Custom Action by ViewAction class
THANK FOR WATCHING!!!
APPENDIX
Add Espresso to project install the Android Support Repository
Add Espresso to project Config project
Add Espresso to project Specify the AndroidJUnitRunner as value for the
testInstrumentationRunner
Construct Test Class and Methods
References documents
1. https://developer.android.com/training/testing/ui-testing/espresso-testing.html
2. https://google.github.io/android-testing-support-library/docs/espresso/
3. http://www.vogella.com/tutorials/AndroidTestingEspresso/article.html
4. http://hamcrest.org/JavaHamcrest/