feat: jest

jest.config.ts

@@ -0,0 +1,21 @@
+import type { Config } from "jest";
+import nextJest from "next/jest.js";
+
+const createJestConfig = nextJest({
+  // Provide the path to your Next.js app to load next.config.js and .env files in your test environment
+  dir: "./",
+});
+
+// Add any custom config to be passed to Jest
+const config: Config = {
+  coverageProvider: "v8",
+  testEnvironment: "jsdom",
+  testMatch: ["**/*.test.js", "**/*.test.ts", "**/*.test.jsx", "**/*.test.tsx"],
+  setupFilesAfterEnv: ["<rootDir>/jest.setup.ts"],
+  moduleNameMapper: {
+    "^@/(.*)$": "<rootDir>/$1",
+  },
+};
+
+// createJestConfig is exported this way to ensure that next/jest can load the Next.js config which is async
+export default createJestConfig(config);

jest.setup.ts

@@ -0,0 +1,2 @@
+// Learn more: https://github.com/testing-library/jest-dom
+import "@testing-library/jest-dom";

package.json

@@ -15,7 +15,9 @@
         "app:build": "yarn mask && yarn tauri build",
         "prompts": "node ./scripts/fetch-prompts.mjs",
         "prepare": "husky install",
-    "proxy-dev": "sh ./scripts/init-proxy.sh && proxychains -f ./scripts/proxychains.conf yarn dev"
+        "proxy-dev": "sh ./scripts/init-proxy.sh && proxychains -f ./scripts/proxychains.conf yarn dev",
+        "test": "jest --watch",
+        "test:ci": "jest --ci"
     },
     "dependencies": {
         "@fortaine/fetch-event-source": "^3.0.6",
@@ -49,6 +51,9 @@
     },
     "devDependencies": {
         "@tauri-apps/cli": "1.5.11",
+        "@testing-library/jest-dom": "^6.4.8",
+        "@testing-library/react": "^16.0.0",
+        "@types/jest": "^29.5.12",
         "@types/lodash-es": "^4.17.12",
         "@types/node": "^20.11.30",
         "@types/react": "^18.2.70",
@@ -62,8 +67,11 @@
         "eslint-config-prettier": "^8.8.0",
         "eslint-plugin-prettier": "^5.1.3",
         "husky": "^8.0.0",
+        "jest": "^29.7.0",
+        "jest-environment-jsdom": "^29.7.0",
         "lint-staged": "^13.2.2",
         "prettier": "^3.0.2",
+        "ts-node": "^10.9.2",
         "tsx": "^4.16.0",
         "typescript": "5.2.2",
         "watch": "^1.0.2",

test/sum-module.test.ts

@@ -0,0 +1,9 @@
+function sum(a: number, b: number) {
+  return a + b;
+}
+
+describe("sum module", () => {
+  test("adds 1 + 2 to equal 3", () => {
+    expect(sum(1, 2)).toBe(3);
+  });
+});