Add testing lib, Integration tests for Annotate

Author: stuartquin

examples/introduction.ipynb

@@ -24,7 +24,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "463a1771d5c140d6aedf856d7a8479b2",
+       "model_id": "1e48798e7c37443a977f0a97b8995cae",
        "version_major": 2,
        "version_minor": 0
       },
@@ -241,7 +241,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "4325344f65d74f2395156d93b851ae8e",
+       "model_id": "98c71fa798204dd2b27746e8eb247e89",
        "version_major": 2,
        "version_minor": 0
       },

package-lock.json

@@ -54,9 +54,11 @@
   "devDependencies": {
     "@babel/core": "^7.5.0",
     "@babel/preset-env": "^7.5.0",
+    "@faker-js/faker": "^7.4.0",
     "@jupyterlab/builder": "^3.0.0",
     "@phosphor/application": "^1.6.0",
     "@phosphor/widgets": "^1.6.0",
+    "@testing-library/preact": "^3.2.2",
     "@types/jest": "^26.0.0",
     "@types/webpack-env": "^1.13.6",
     "@typescript-eslint/eslint-plugin": "^3.6.0",