Chore/setup testing environment (#755)

* chore: setup environment for unit tests

* fix: remove extra character from json

package.json

@@ -16,7 +16,8 @@
     "bundle:desktop:beta": "webpack --config webpack.prod.js --env platform='desktop' --env public_beta='true'",
     "build": "bundle install && yarn install --frozen-lockfile && bundle exec rails assets:precompile && yarn bundle",
     "lint": "eslint --fix app/assets/javascripts",
-    "tsc": "tsc --project app/assets/javascripts/tsconfig.json"
+    "tsc": "tsc --project app/assets/javascripts/tsconfig.json",
+    "test": "jest --config app/assets/javascripts/jest.config.js"
   },
   "devDependencies": {
     "@babel/core": "^7.15.8",
@@ -27,6 +28,7 @@
     "@reach/visually-hidden": "^0.16.0",
     "@svgr/webpack": "^5.5.0",
     "@types/angular": "^1.8.3",
+    "@types/jest": "^27.0.3",
     "@types/lodash": "^4.14.176",
     "@types/pug": "^2.0.5",
     "@types/react": "^17.0.31",
@@ -46,15 +48,21 @@
     "eslint-plugin-react-hooks": "^4.2.1-beta-149b420f6-20211119",
     "file-loader": "^6.2.0",
     "html-webpack-plugin": "^5.4.0",
+    "identity-obj-proxy": "^3.0.0",
+    "jest": "^27.3.1",
+    "jest-transform-pug": "^0.1.0",
     "lodash": "^4.17.21",
     "mini-css-extract-plugin": "^2.4.3",
     "ng-cache-loader": "0.0.26",
     "node-sass": "^6.0.1",
     "pug": "^3.0.2",
+    "pug-jest": "^1.0.1",
     "pug-loader": "^2.4.0",
     "sass-loader": "^12.2.0",
     "serve-static": "^1.14.1",
     "sn-stylekit": "5.2.15",
+    "svg-jest": "^1.0.1",
+    "ts-jest": "^27.0.7",
     "ts-loader": "^9.2.6",
     "typescript": "4.4.4",
     "typescript-eslint": "0.0.1-alpha.0",
@@ -74,7 +82,7 @@
     "@standardnotes/sncrypto-web": "1.5.3",
     "@standardnotes/snjs": "2.18.2",
     "mobx": "^6.3.5",
-    "mobx-react-lite": "^3.2.1",
+    "mobx-react-lite": "^3.2.2",
     "preact": "^10.5.15",
     "qrcode.react": "^1.0.1"
   }