test: add unit tests generated by ToTheos

jest.config.js

@@ -0,0 +1,37 @@
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'jsdom',
+  roots: ['<rootDir>/src'],
+  testMatch: [
+    "**/__tests__/**/*.+(ts|tsx|js)",
+    "**/*test.+(ts|tsx|js)",
+    "**/*.(test|spec).(ts|tsx|js)"
+  ],
+  transform: {
+    '^.+\\.(ts|tsx)$': [
+      'ts-jest',
+      {
+        tsconfig: 'tsconfig.json',
+        diagnostics: {
+          ignoreCodes: [151001],
+        },
+        babelConfig: {
+          presets: ['@babel/preset-env', '@babel/preset-react'],
+        },
+        isolatedModules: true,
+      }
+    ],
+    '^.+\\.(js|jsx)$': 'babel-jest',
+  },
+  transformIgnorePatterns: [
+    '/node_modules/(?!(framer-motion|@react-spring/)/)',
+  ],
+  moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
+  moduleNameMapper: {
+    '^@/(.*)$': '<rootDir>/src/$1',
+    '\\.(css|less|scss|sass)$': 'identity-obj-proxy',
+    '^.*\\.svg$': '<rootDir>/__mocks__/svg.js',
+  },
+  setupFilesAfterEnv: ['<rootDir>/src/setupTests.ts'],
+  setupFiles: ['<rootDir>/src/setupJest.js'],
+};

package.json

@@ -21,9 +21,12 @@
     "@radix-ui/react-slot": "^1.2.4",
     "@radix-ui/react-tooltip": "^1.2.8",
     "@tailwindcss/postcss": "^4.1.18",
+    "@types/mdx": "^2.0.13",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "content-collections": "^0.2.1",
+    "framer-motion": "^11.18.2",
+    "gray-matter": "^4.0.3",
     "lucide-react": "^0.562.0",
     "motion": "^12.23.27",
     "next": "16.1.1",
@@ -32,23 +35,38 @@
     "react-dom": "^19.2.3",
     "react-markdown": "^10.1.0",
     "rehype-pretty-code": "^0.14.1",
+    "rehype-stringify": "^10.0.1",
     "remark-gfm": "^4.0.1",
+    "remark-parse": "^11.0.0",
+    "remark-rehype": "^11.1.2",
     "shiki": "^3.20.0",
     "tailwind-merge": "^3.4.0",
-    "tailwindcss": "^4.1.18",
     "tailwindcss-animate": "^1.0.7",
-    "tw-animate-css": "^1.4.0"
+    "tw-animate-css": "^1.4.0",
+    "unified": "^11.0.5"
   },
   "devDependencies": {
+    "@babel/core": "^7.28.5",
+    "@babel/preset-env": "^7.29.5",
+    "@babel/preset-react": "^7.28.5",
+    "@babel/preset-typescript": "^7.28.5",
     "@content-collections/core": "^0.13.1",
     "@content-collections/next": "^0.2.10",
     "@tailwindcss/typography": "^0.5.19",
+    "@testing-library/jest-dom": "^6.9.1",
+    "@testing-library/react": "^16.3.2",
+    "@types/jest": "^30.0.0",
     "@types/node": "^25.0.3",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
+    "babel-jest": "^30.4.1",
     "eslint": "^9.39.2",
     "eslint-config-next": "16.1.1",
+    "jest": "^30.4.2",
+    "jest-environment-jsdom": "^30.4.1",
     "postcss": "^8.5.6",
+    "tailwindcss": "^3.4.19",
+    "ts-jest": "^29.4.11",
     "typescript": "^5.9.3",
     "zod": "^4.3.5"
   }