This is a small VS Code extension that helps with managing Typst's test suite. When installed, three new buttons appear in the menubar for all .typ files in the tests folder.

Open: Opens the output and reference images of a test to the side.
Refresh: Refreshes the preview.
Rerun: Re-runs the test.
Update: Copies the output into the reference folder and optimizes it with oxipng.

For the test helper to work correctly, you also need to install oxipng, for example with cargo install oxipng.

Installation

The simplest way to install this extension (and keep it up-to-date) is to use VSCode's UI:

Go to View > Command Palette,
In the drop down list, pick command "Developer: Install extension from location",
Select this test-helper directory in the file explorer dialogue box. VSCode will add the extension's path to ~/.vscode/extensions/extensions.json.