fix(ci): ensure tests for postcss-linaria run

[nickhudkins]

😳 It appears that tests have not been running in CI for this project. This does reveal broken tests, which I will address in a follow up commit. For now, opening for visibility, and if someone else wants to pick up fixing the tests, by all means I welcome the help!

Motivation

When using postcss-linaria as a customSyntax for stylelint, certain forms of JS interpolations are improperly transformed.

Example:

// Before Fix

const SOME_INTERPOLATION = '--wow-neat-property-bro';
const myStyles = css`.foo {
  color: var(${SOME_INTERPOLATION});
}`


// After StyleLint Auto-Fix:
const SOME_INTERPOLATION = '--wow-neat-property-bro';
const myStyles = css`.foo {
  color: var(/* ${SOME_INTERPOLATION}:0 */);
}`

Summary

In the current form of the PR, only "running the tests in CI" has been addressed.

Test plan

CI! We're gonna run the tests that test the code, on every PR. It'll be great.

[changeset-bot]

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Latest commit: 305dc31

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