koa-lite/test/request/acceptsEncodings.js

'use strict';

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

describe('ctx.acceptsEncodings()', () => {
  describe('with no arguments', () => {
    describe('when Accept-Encoding is populated', () => {
      it('should return accepted types', () => {
        const ctx = context();
        ctx.req.headers['accept-encoding'] = 'gzip, compress;q=0.2';
        assert.deepEqual(ctx.acceptsEncodings(), ['gzip', 'compress', 'identity']);
        assert.equal(ctx.acceptsEncodings('gzip', 'compress'), 'gzip');
      });
    });

    describe('when Accept-Encoding is not populated', () => {
      it('should return identity', () => {
        const ctx = context();
        assert.deepEqual(ctx.acceptsEncodings(), ['identity']);
        assert.equal(ctx.acceptsEncodings('gzip', 'deflate', 'identity'), 'identity');
      });
    });
  });

  describe('with multiple arguments', () => {
    it('should return the best fit', () => {
      const ctx = context();
      ctx.req.headers['accept-encoding'] = 'gzip, compress;q=0.2';
      assert.equal(ctx.acceptsEncodings('compress', 'gzip'), 'gzip');
      assert.equal(ctx.acceptsEncodings('gzip', 'compress'), 'gzip');
    });
  });

  describe('with an array', () => {
    it('should return the best fit', () => {
      const ctx = context();
      ctx.req.headers['accept-encoding'] = 'gzip, compress;q=0.2';
      assert.equal(ctx.acceptsEncodings(['compress', 'gzip']), 'gzip');
    });
  });
});