draft: suggestion / diffing tests

pnpm-workspace.yaml

@@ -17,8 +17,8 @@ overrides:
   "@headlessui/react": "^2.2.4"
   "@tiptap/core": "^3.0.0"
   "@tiptap/pm": "^3.0.0"
-  "vitest": "4.1.2"
-  "@vitest/runner": "4.1.2"
+  "vitest": "4.1.7"
+  "@vitest/runner": "4.1.7"
   "@y/prosemirror>lib0": "1.0.0-rc.13"
 allowBuilds:
   "@parcel/watcher": true

tests/.gitignore

@@ -0,0 +1,6 @@
+# vitest-browser auto-saved debug screenshots on test failure (separate
+# from `toMatchScreenshot` reference shots, which use `*-chromium-darwin.png`).
+src/browser/**/__screenshots__/**/*-1.png
+
+# vitest-browser attachments (debug artifacts saved during test runs).
+.vitest-attachments

tests/package.json

@@ -7,6 +7,8 @@
     "lint": "eslint src --max-warnings 0",
     "playwright": "playwright test",
     "test": "vitest --run",
+    "test:browser": "vitest --run --config ./vite.config.browser.ts",
+    "test:browser:updateSnaps": "vitest --run --config ./vite.config.browser.ts -u",
     "test:updateSnaps": "docker run --rm -e RUN_IN_DOCKER=true --network host -v $(pwd)/..:/work/ -w /work/tests -it mcr.microsoft.com/playwright:v1.51.1-noble npx playwright test -u",
     "test-ct": "playwright test -c playwright-ct.config.ts --headed",
     "test-ct:updateSnaps": "docker run --rm  -e RUN_IN_DOCKER=true --network host -v $(pwd)/..:/work/ -w /work/tests -it mcr.microsoft.com/playwright:v1.51.1-noble npx playwright test -c playwright-ct.config.ts -u",
@@ -24,6 +26,11 @@
     "@types/node": "^20.19.22",
     "@types/react": "^19.2.3",
     "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^6.0.1",
+    "@vitest/browser": "4.1.7",
+    "@vitest/browser-playwright": "4.1.7",
+    "@y/protocols": "^1.0.6-rc.1",
+    "@y/y": "^14.0.0-rc.16",
     "eslint": "^8.57.1",
     "htmlfy": "^0.6.7",
     "react": "^19.2.5",
@@ -32,7 +39,8 @@
     "rimraf": "^5.0.10",
     "vite": "^8.0.8",
     "vite-plugin-eslint": "^1.8.1",
-    "vitest": "^4.1.2"
+    "vitest": "4.1.7",
+    "vitest-browser-react": "^2.2.0"
   },
   "eslintConfig": {
     "extends": [

tests/src/browser/vitestSetup.ts

@@ -0,0 +1,13 @@
+import { afterEach, beforeEach } from "vitest";
+
+// Make BlockNote's `UniqueID` extension emit deterministic, incrementing
+// numeric IDs instead of UUIDs. Snapshots that pick up auto-generated
+// block ids (e.g. a trailing paragraph BlockNote injects after an image
+// or heading) stay stable across runs.
+beforeEach(() => {
+  (window as Window & { __TEST_OPTIONS?: any }).__TEST_OPTIONS = {};
+});
+
+afterEach(() => {
+  delete (window as Window & { __TEST_OPTIONS?: any }).__TEST_OPTIONS;
+});