diff --git a/__tests__/App_test.res b/__tests__/App_test.res
new file mode 100644
index 0000000..567e51a
--- /dev/null
+++ b/__tests__/App_test.res
@@ -0,0 +1,33 @@
+open Test
+open App
+open Dom
+
+@get external textContent: Dom.element => string = "textContent"
+
+@module("@testing-library/react")
+external act: (@uncurry unit => unit) => unit = "act"
+
+@val external window: {..} = "window"
+@send external remove: Dom.element => unit = "remove"
+
+let createContainer = () => {
+  let containerElement: Dom.element = window["document"]["createElement"]("div")
+  let _ = window["document"]["body"]["appendChild"](containerElement)
+  containerElement
+}
+
+let cleanupContainer = (container: Dom.element) => {
+  ReactDOM.unmountComponentAtNode(container)
+  remove(container)
+}
+
+let testWithReact = testWith(~setup=createContainer, ~teardown=cleanupContainer)
+let testAsyncWithReact = testAsyncWith(~setup=createContainer, ~teardown=cleanupContainer)
+
+testWithReact("Can render", container => {
+  act(() => ReactDOM.render(<App />, container))
+
+  let countElement = ReactDOM.querySelector(".count")
+
+  cleanupContainer(container)
+})
diff --git a/bsconfig.json b/bsconfig.json
index a51e5c2..b9729fd 100644
--- a/bsconfig.json
+++ b/bsconfig.json
@@ -4,6 +4,11 @@
 		{
 			"dir": "src",
 			"subdirs": true
+		},
+		{
+			"dir": "__tests__",
+			"subdirs": true,
+			"type": "dev"
 		}
 	],
 	"package-specs": [
@@ -14,6 +19,12 @@
 	],
 	"suffix": ".bs.js",
 	"bs-dependencies": ["@rescript/core", "@rescript/react"],
+	"bs-dev-dependencies": [
+		"rescript-test",
+		"@glennsl/rescript-jest",
+		"rescript-nodejs",
+		"rescript-js"
+	],
 	"jsx": {
 		"version": 4,
 		"mode": "automatic"
diff --git a/bun.lockb b/bun.lockb
index aa1a8ae..15d2899 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/commitlint.config.js b/commitlint.config.cjs
similarity index 100%
rename from commitlint.config.js
rename to commitlint.config.cjs
diff --git a/package.json b/package.json
index fda8650..0b537fc 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
   "name": "rspack-rescript-react",
   "private": true,
   "version": "1.0.0",
+  "type": "module",
   "scripts": {
     "dev": "concurrently \"bun run res:dev\" \"rspack serve\"",
     "build": "cross-env NODE_ENV=production rspack build",
@@ -13,7 +14,8 @@
     "format:check": "biome check .",
     "format:write": "biome format . --write",
     "lint:check": "biome lint .",
-    "lint": "biome lint --apply ."
+    "lint": "biome lint --apply .",
+    "test": "retest __tests__/*.bs.js"
   },
   "dependencies": {
     "@emotion/css": "^11.11.2",
@@ -29,10 +31,12 @@
     "@commitlint/cli": "^17.7.2",
     "@commitlint/config-conventional": "^17.7.0",
     "@commitlint/cz-commitlint": "^17.7.2",
+    "@glennsl/rescript-jest": "^0.10.0",
     "@rspack/cli": "latest",
     "@rspack/core": "^0.3.6",
     "@rspack/plugin-react-refresh": "^0.3.6",
     "@svgr/webpack": "^8.1.0",
+    "@testing-library/react": "^14.0.0",
     "@types/react": "18.2.0",
     "@types/react-dom": "18.2.1",
     "commitizen": "^4.3.0",
@@ -40,6 +44,9 @@
     "cross-env": "^7.0.3",
     "husky": "^8.0.3",
     "inquirer": "^9.2.11",
+    "rescript-js": "^1.0.0-beta.2",
+    "rescript-nodejs": "^15.0.0",
+    "rescript-test": "^5.0.0",
     "typescript": "^5.0.4",
     "webpack-bundle-analyzer": "^4.9.1"
   },
diff --git a/rspack.config.js b/rspack.config.cjs
similarity index 100%
rename from rspack.config.js
rename to rspack.config.cjs