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[メモ]fastifyのhttp injection機能

Last updated at Posted at 2018-02-25

http injection

  • fastifyのinstanceを作成する。
app.js
const app = require('fastify')();

app.get('/users/:id', (req, reply) => {
  reply.send({ id: 2, name: 'piyo' });
});

app.post('/users', (req, reply) => {
  reply
    .code(201)
    .send({ id: 3, name: 'hogehoge' });
});

module.exports = app;
  • http injection機能を利用する際は、injectメソッドを使用する。

  • サーバをlistenすることなく、テスト等を実行できる。

test.js
const test = require('tape');
const app = require('./app');

test.onFinish(() => {
  app.close();
});

test('GET /users/:id', async t => {
  t.plan(3);

  try {
    // 第2引数にNodeスタイルのcallback関数を渡すこともできる。
    // 省略した場合は、Promiseが返却される。
    const res = await app.inject({
      method: 'GET',
      url: '/users/2'
    });

    // tests
    t.equal(res.statusCode, 200);
    t.equal(res.headers['content-type'], 'application/json');
    t.deepEqual(JSON.parse(res.payload), {
      id: 2, 
      name: 'piyo'
    });
  } catch (e) {
    t.fail(e.message);
  }
});

  • リクエストボディを指定したい場合は、payloadプロパティに値を設定する。
test('POST /users', async t => {
  t.plan(4);

  try {
    const res = await app.inject({
      method: 'POST',
      url: '/users',
      payload: { name: 'hogehoge' }
    });
    const payload = JSON.parse(res.payload);

    t.equal(res.statusCode, 201);
    t.equal(res.headers['content-type'], 'application/json');  
    t.equal(payload.name, 'hogehoge');
    t.ok(payload.hasOwnProperty('id'));
  } catch (e) {
    t.fail(e.message);
  }
});
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