test: add test suite for onPlugIn event handler (#138)

cheetah.ts

@@ -244,7 +244,7 @@ export class cheetah extends base<cheetah>() {
  let body: Response | void = undefined
 
  for (const e of this.#extensions.values()) {
- if (this.#onPlugIn === true && e[1].onPlugIn !== undefined) {
+ if (!this.#onPlugIn && e[1].onPlugIn !== undefined) {
  await e[1].onPlugIn({
  env: __app.env,
  routes: this.#routes,
@@ -290,8 +290,8 @@ export class cheetah extends base<cheetah>() {
  }
  }
 
- if (this.#onPlugIn) {
- this.#onPlugIn = false
+ if (!this.#onPlugIn) {
+ this.#onPlugIn = true
  }
 
  if (body !== undefined) {

test/extensions.test.ts

@@ -3,7 +3,14 @@ import cheetah, { createExtension } from '../mod.ts'
 import { assertEquals } from './deps.ts'
 
 Deno.test('Extensions', async (t) => {
+ let count = 0
+
  const a = createExtension({
+ onPlugIn({ setRoute }) {
+ setRoute('get', '/cookie', () => '🍪')
+
+ count++
+ },
  onRequest({ req }) {
  req.headers.set('custom', 'test')
  },
@@ -39,6 +46,12 @@ Deno.test('Extensions', async (t) => {
  return 'test'
  })
 
+ await t.step('onPlugIn (part 1)', async () => {
+ const result = await app.fetch(new Request('http://localhost/cookie'))
+
+ assertEquals(await result.text(), '🍪')
+ })
+
  await t.step('onRequest', async () => {
  const result = await app.fetch(new Request('http://localhost/a'))
 
@@ -54,4 +67,11 @@ Deno.test('Extensions', async (t) => {
 
  assertEquals(await result2.text(), 'hello')
  })
+
+ await t.step('onPlugIn (part 2)', async () => {
+ const result = await app.fetch(new Request('http://localhost/cookie'))
+
+ assertEquals(await result.text(), '🍪')
+ assertEquals(count, 1)
+ })
 })