Hello!

I have created a test-suite for evil-helix and possibly other vim-alike editors.

You can check it out here: https://github.com/thomie/vim-keymap-test

Each test defines the contents of the input buffer (for example foo bar), a list of commands to run (for example [dw]), and the expected output (bar in this case).

For each test, the test runner starts vim or (evil-)hx as an external process, sets the input buffer, simulates a user executing the commands, and compares the output with the expected output.

I have found it quite useful while hacking on evil-helix (merge requests incoming!), e.g. to prevent regressions.

Let me know what you think.