koa-lite/test/response/append.js

'use strict';

const assert = require('assert');
const context = require('../helpers/context');

describe('ctx.append(name, val)', () => {
  it('should append multiple headers', () => {
    const ctx = context();
    ctx.append('x-foo', 'bar1');
    ctx.append('x-foo', 'bar2');
    assert.deepEqual(ctx.response.header['x-foo'], ['bar1', 'bar2']);
  });

  it('should accept array of values', () => {
    const ctx = context();

    ctx.append('Set-Cookie', ['foo=bar', 'fizz=buzz']);
    ctx.append('Set-Cookie', 'hi=again');
    assert.deepEqual(ctx.response.header['set-cookie'], ['foo=bar', 'fizz=buzz', 'hi=again']);
  });

  it('should get reset by res.set(field, val)', () => {
    const ctx = context();

    ctx.append('Link', '<http://localhost/>');
    ctx.append('Link', '<http://localhost:80/>');

    ctx.set('Link', '<http://127.0.0.1/>');

    assert.equal(ctx.response.header.link, '<http://127.0.0.1/>');
  });

  it('should work with res.set(field, val) first', () => {
    const ctx = context();

    ctx.set('Link', '<http://localhost/>');
    ctx.append('Link', '<http://localhost:80/>');

    assert.deepEqual(ctx.response.header.link, ['<http://localhost/>', '<http://localhost:80/>']);
  });
});