diff --git a/index.js b/index.js
index 815451e..507fbf2 100644
--- a/index.js
+++ b/index.js
@@ -1,5 +1,6 @@
 module.exports = (config = {}) => {
-  const router = config.router || require('./lib/router/sequential')(config)
+  // Sequential is default and only router implementation for now
+  const router = require('./lib/router/sequential')(config)
 
   return {
     router
diff --git a/lib/router/sequential.js b/lib/router/sequential.js
index 58186b9..83e8447 100644
--- a/lib/router/sequential.js
+++ b/lib/router/sequential.js
@@ -5,7 +5,7 @@ const next = require('./../next')
 
 module.exports = (config = {}) => {
   if (!config.defaultRoute) {
-    config.defaultRoute = (req) => {
+    config.defaultRoute = () => {
       const res = new Response(null, {
         status: 404
       })
@@ -14,7 +14,7 @@ module.exports = (config = {}) => {
     }
   }
   if (!config.errorHandler) {
-    config.errorHandler = (err, req) => {
+    config.errorHandler = (err) => {
       const res = new Response(err.message, {
         status: 500
       })
@@ -38,7 +38,7 @@ module.exports = (config = {}) => {
     return this
   }
 
-  router.fetch = (req, step) => {
+  router.fetch = (req) => {
     const url = new URL(req.url)
 
     req.path = url.pathname || '/'
diff --git a/package.json b/package.json
index 9426d1c..454858b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "0http-bun",
-  "version": "0.0.3",
-  "description": "0http alternative for Bun",
+  "version": "1.0.0",
+  "description": "0http for Bun",
   "main": "index.js",
   "scripts": {
     "lint": "bun x standard",
diff --git a/test/config.test.js b/test/config.test.js
new file mode 100644
index 0000000..048bf72
--- /dev/null
+++ b/test/config.test.js
@@ -0,0 +1,44 @@
+/* global describe, it, expect, beforeAll */
+
+const http = require('../index')
+const { router } = http({
+  port: 3000,
+  defaultRoute: (req) => {
+    const res = new Response('Not Found!', {
+      status: 404
+    })
+
+    return res
+  },
+  errorHandler: (err) => {
+    const res = new Response('Error: ' + err.message, {
+      status: 500
+    })
+
+    return res
+  }
+})
+
+describe('Router Configuration', () => {
+  beforeAll(async () => {
+    router.get('/error', () => {
+      throw new Error('Unexpected error')
+    })
+  })
+
+  it('should return a 500 response for a route that throws an error', async () => {
+    const response = await router.fetch(new Request('http://localhost:3000/error', {
+      method: 'GET'
+    }))
+    expect(response.status).toBe(500)
+    expect(await response.text()).toEqual('Error: Unexpected error')
+  })
+
+  it('should return a 404 response for a route that does not exist', async () => {
+    const response = await router.fetch(new Request('http://localhost:3000/does-not-exist', {
+      method: 'GET'
+    }))
+    expect(response.status).toBe(404)
+    expect(await response.text()).toEqual('Not Found!')
+  })
+})
diff --git a/test/smoke.test.js b/test/smoke.test.js
new file mode 100644
index 0000000..90403ec
--- /dev/null
+++ b/test/smoke.test.js
@@ -0,0 +1,86 @@
+/* global describe, it, expect, beforeAll */
+
+const http = require('../index')
+const { router } = http({ port: 3000 })
+
+describe('Router', () => {
+  beforeAll(async () => {
+    router.use((req, next) => {
+      req.ctx = {
+        engine: 'bun'
+      }
+
+      return next()
+    })
+
+    router.get('/get-params/:id', (req) => {
+      return Response.json(req.params)
+    })
+
+    router.delete('/get-params/:id', () => {
+      return Response.json('OK')
+    })
+
+    router.get('/error', () => {
+      throw new Error('Unexpected error')
+    })
+
+    router.post('/create', async (req) => {
+      const body = await req.text()
+
+      return Response.json(JSON.parse(body))
+    })
+
+    router.get('/', (req) => {
+      return Response.json(req.ctx)
+    })
+  })
+
+  it('should return a JSON response with the request parameters for GET requests', async () => {
+    const response = await router.fetch(new Request('http://localhost:3000/get-params/123', {
+      method: 'GET'
+    }))
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual({ id: '123' })
+  })
+
+  it('should return a JSON response with the request parameters for DELETE requests', async () => {
+    const response = await router.fetch(new Request('http://localhost:3000/get-params/123', {
+      method: 'DELETE'
+    }))
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual('OK')
+  })
+
+  it('should return a JSON response with the request body for POST requests', async () => {
+    const response = await router.fetch(new Request('http://localhost:3000/create', {
+      method: 'POST',
+      body: JSON.stringify({ foo: 'bar' })
+    }))
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual({ foo: 'bar' })
+  })
+
+  it('should return a 404 response for a non-existent route', async () => {
+    const response = await router.fetch(new Request('http://localhost:3000/non-existent', {
+      method: 'GET'
+    }))
+    expect(response.status).toBe(404)
+  })
+
+  it('should return a 500 response for a route that throws an error', async () => {
+    const response = await router.fetch(new Request('http://localhost:3000/error', {
+      method: 'GET'
+    }))
+    expect(response.status).toBe(500)
+    expect(await response.text()).toEqual('Unexpected error')
+  })
+
+  it('should return a 200 response for a route that returns a Response object', async () => {
+    const response = await router.fetch(new Request('http://localhost:3000/', {
+      method: 'GET'
+    }))
+    expect(response.status).toBe(200)
+    expect(await response.json()).toEqual({ engine: 'bun' })
+  })
+})