Add testing for TS modules

README.md

@@ -33,6 +33,9 @@ This readme file is used mostly to document project dependencies
   <pre>
   - tailwindcss postcss autoprefixer
   - eslint-plugin-simple-import-sort
+  - jest
+  - ts-jest
+  - @types/jest
   </pre>
 </details>
 <details>

rsconcept/RunTests.ps1

@@ -6,3 +6,7 @@ $djangoSrc = "$PSScriptRoot\backend\manage.py"
 
 & $pyExec $djangoSrc check
 & $pyExec $djangoSrc test
+
+Set-Location $PSScriptRoot\frontend
+
+& npm test

rsconcept/frontend/package.json

@@ -4,6 +4,7 @@
   "version": "0.1.0",
   "type": "module",
   "scripts": {
+    "test": "jest",
     "dev": "vite",
     "build": "tsc && vite build",
     "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0",
@@ -26,6 +27,7 @@
     "reagraph": "^4.11.1"
   },
   "devDependencies": {
+    "@types/jest": "^29.5.3",
     "@types/node": "^20.4.5",
     "@types/react": "^18.2.15",
     "@types/react-dom": "^18.2.7",
@@ -37,9 +39,21 @@
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-react-refresh": "^0.4.3",
     "eslint-plugin-simple-import-sort": "^10.0.0",
+    "jest": "^29.6.2",
     "postcss": "^8.4.27",
     "tailwindcss": "^3.3.3",
+    "ts-jest": "^29.1.1",
     "typescript": "^5.0.2",
     "vite": "^4.4.5"
+  },
+  "jest": {
+    "preset": "ts-jest",
+    "testEnvironment": "node",
+    "transform": {
+      "node_modules/variables/.+\\.(j|t)sx?$": "ts-jest"
+    },
+    "transformIgnorePatterns": [
+      "node_modules/(?!variables/.*)"
+    ]
   }
 }

rsconcept/frontend/src/utils/Graph.test.ts

@@ -0,0 +1,17 @@
+import { Graph } from './Graph';
+
+describe('Testing Graph constuction', () => {
+  test('empty Graph should be empty', () => {
+    const graph = new Graph();
+    expect(graph.nodes.size).toBe(0);
+  });
+
+  test('adding edges should create nodes', () => {
+    const graph = new Graph();
+    graph.addEdge(13, 37);
+    expect([... graph.nodes.keys()]).toStrictEqual([13, 37]);
+
+    graph.addEdge(13, 38);
+    expect([... graph.nodes.keys()]).toStrictEqual([13, 37, 38]);
+  });
+});

rsconcept/frontend/tsconfig.json

@@ -5,6 +5,7 @@
     "lib": ["ES2020", "DOM", "DOM.Iterable"],
     "module": "ESNext",
     "skipLibCheck": true,
+    "esModuleInterop": true,
 
     /* Bundler mode */
     "moduleResolution": "bundler",