Start unit testing

Author: jahn96

babel.config.ts

@@ -45,7 +45,7 @@
     "watch": "run-p watch:src watch:labextension",
     "watch:labextension": "jupyter labextension watch .",
     "watch:src": "tsc -w",
-    "test": "jest",
+    "test": "jest --watch",
     "test:cov": "jest --collect-coverage"
   },
   "dependencies": {
@@ -75,7 +75,8 @@
     "eslint": "^7.5.0",
     "@babel/core": "^7",
     "@babel/preset-env": "^7",
-    "@types/jest": "^24",
+    "@testing-library/react": "^11.1.1",
+    "@types/jest": "^26.0.15",
     "eslint-config-prettier": "^6.10.1",
     "eslint-plugin-prettier": "^3.1.2",
     "eslint-plugin-react": "^7.20.4",
@@ -88,7 +89,8 @@
     "prettier": "^1.19.0",
     "rimraf": "^3.0.2",
     "typescript": "~4.1.3",
-    "ts-jest": "^24"
+    "react-test-renderer": "^17.0.1",
+    "ts-jest": "^26.4.4"
   },
   "sideEffects": [
     "style/*.css",

jest.config.ts

@@ -20,5 +20,5 @@
     "target": "es2017",
     "types": []
   },
-  "include": ["src/*", "src/*.tsx"]
+  "include": ["src/*", "src/*.tsx", "test/*"]
 }

package.json

@@ -24,4 +24,4 @@
       "skipLibCheck": true
     },
     "include": ["src/**/*", "test/**/*"]
-  }
+  }