How Android Studio uses unit tests (no device required)

With regard to the use of unit tests, sometimes it is necessary to detect the feasibility and correctness of code logic in the process of writing code, and do not want to run through the device, so you can run the code through unit tests ~

1, first build Android studio Android project;

2, you can see there are 3 different categories of code folders

The first one is the real project folder, the second is a folder based on the Android device Unit test, and the third is a Java Virtual machine based unit Test folder

3. Add test code to test

Select "Test" folder, direct Ctrl + SHIFT + F10 run (or go to Exampleunittest class, right-click,Run ' exampleunittest ')

The results are as follows:

How Android Studio uses unit tests (no device required)