test: set up testing environment

.github/workflows/test.yml

@@ -0,0 +1,42 @@
+name: Test
+
+on:
+  pull_request:
+    branches:
+      - main
+  workflow_call:
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: Test
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version:
+          - '22.12.x'
+        os:
+          - macos-latest
+          # TODO(dsanders11: Enable these once we fix tests on those platforms in CI
+          # - ubuntu-latest
+          # - windows-latest
+    runs-on: "${{ matrix.os }}"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - name: Setup Node.js
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+        with:
+          node-version: "${{ matrix.node-version }}"
+          cache: 'npm'
+      - name: Install dependencies
+        run: npm ci
+      # TODO(dsanders11): Enable this once we get a clean lint state on `main`
+      # - name: Lint
+      #   run: npm run lint
+      - name: Build
+        run: npm run build
+      - name: Test
+        run: npm run test

eslint.config.mjs

@@ -4,6 +4,7 @@ import globals from 'globals';
 import eslintPluginUnicorn from 'eslint-plugin-unicorn';
 import react from 'eslint-plugin-react';
 import reactHooks from 'eslint-plugin-react-hooks';
+import pluginChaiFriendly from 'eslint-plugin-chai-friendly';
 
 export default tseslint.config(
   eslint.configs.recommended,
@@ -14,10 +15,13 @@ export default tseslint.config(
   {
     files: ['**/*.{js,jsx,ts,tsx}'],
     plugins: {
+      'chai-friendly': pluginChaiFriendly,
       unicorn: eslintPluginUnicorn,
       react: react,
     },
     rules: {
+      '@typescript-eslint/no-unused-expressions': 'off',
+      'chai-friendly/no-unused-expressions': 'error',
       'unicorn/prefer-node-protocol': 'error',
       '@typescript-eslint/no-explicit-any': 'off',
       '@typescript-eslint/consistent-type-imports': 'error',
@@ -37,6 +41,12 @@ export default tseslint.config(
       },
     },
   },
+  {
+    files: ['spec-electron-setup/**/*.{js,cjs,ts}'],
+    rules: {
+      '@typescript-eslint/no-require-imports': 'off',
+    },
+  },
   {
     settings: {
       react: {