test: add bun & deno tests for buffers

runtime-tests/bun/index.test.tsx

@@ -438,3 +438,15 @@ describe('streaming', () => {
     })
   })
 })
+
+describe('Buffers', () => {
+  const app = new Hono().get('/', async (c) => {
+    return c.body(Buffer.from('hello'))
+  })
+
+  it('should allow returning buffers', async () => {
+    const res = await app.request(new Request('http://localhost/'))
+    expect(res.status).toBe(200)
+    expect(await res.text()).toBe('hello')
+  })
+})

runtime-tests/deno/hono.test.ts

@@ -1,3 +1,5 @@
+import { Buffer } from 'node:buffer'
+
 import { assertEquals } from '@std/assert'
 import { Context } from '../../src/context.ts'
 import { env, getRuntimeKey } from '../../src/helper/adapter/index.ts'
@@ -32,3 +34,13 @@ Deno.test('environment variables', () => {
   const { NAME } = env<{ NAME: string }>(c)
   assertEquals(NAME, 'Deno')
 })
+
+Deno.test('Buffers', async () => {
+  const app = new Hono().get('/', async (c) => {
+    return c.body(Buffer.from('hello'))
+  })
+
+  const res = await app.request('/')
+  assertEquals(res.status, 200)
+  assertEquals(await res.text(), 'hello')
+})