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Pro Tip: Android Studio shortcuts for unit tests

Testing is an important part of the development process. Today we will leverage Android Studio shortcuts to create and run unit tests faster and without using the mouse.

Create and run unit tests without a mouse

This is my usual workflow, see also the gif. You can change the shortcuts in Preferences > Keymap (open with Cmd+,) navigating to the entries in parentheses.

  1. Make sure the file you want to unit test has focus in the editor. Otherwise press Esc to give it focus.

  2. Press Shift+Cmd+T (Main menu > Navigate > Test). A small window pops up: you can create a new unit test pressing Enter or jump to old ones, if there are any.

  3. A dialog for creating the tests pops up. Move around with Tab, select options with Space, confirm with Ctrl+Enter.

  4. If Android Studio doesn't create the test immediately or doesn't let you put the test in src/test, it means there is no such folder. Right click on src > New > Directory and enter test/java to create the test folder. Alternatively, you can bind a custom shortcut to create a folder in Preferences > Keymap: I use Shift+Cmd+P.

  5. In the test class press Cmd+N or Ctrl+Enter (Main menu > Code > Generate) to show the Generate menu. Press Enter on Test Method to ge nerate a unit test. You can modify the default template with Cmd+N > Right > Edit Template. In my template I removed the prefix test in the test method name, the throws Exception, and the newline after ${BODY}.

  6. To jump back to the production code press again Shift+Cmd+T.

  7. To run a test, position the cursor on the relative method and press Ctrl+Shitft+R (Other > Run context configuration). To debug it Ctrl+Shift+D (Other > Debug context configuration). To run all the tests in a class do the same on the class name.

Happy testing!