Modern Vim by Drew Neil

Author:Drew Neil
Language: eng
Format: epub
Tags: Pragmatic Bookshelf
Publisher: Pragmatic Bookshelf

Re-Running the Most Recent Test Runner

When practicing test-driven development, you’ll switch frequently between the test and implementation files. What if you want to use a test runner command when you don’t have a test file open? That’s where the :TestLast command comes in. You can use this to re-run the test runner that you used most recently.

To try this out, activate the testing-rb project and run the last test by itself:

​=> ​:tablast​

​=> ​:normal G​

​=> ​:TestNearest​

​<= bundle exec rspec spec/homophoner_spec.rb:25

​ ...

The testing-rb directory contains a break-things.diff patch file, which will cause the tests to fail. Apply the patch, then open the implementation file:

​=> ​:!patch lib/homophoner.rb break-things.diff​

​=> ​:edit! lib/homophoner.rb​

In this context, running :TestNearest makes no sense because the active buffer is not a test file. But you can use :TestLast to re-run the last test:

​=> ​:TestLast​

​<= bundle exec rspec spec/homophoner_spec.rb:25

You’ll see some failures this time. If you like a challenge, study the error message and see if you can fix the failing test. (Take a peek inside the break-things.diff file if you want a hint!)

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