koa-lite/test/response/length.js

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'use strict';
const response = require('../helpers/context').response;
const should = require('should');
const assert = require('assert');
const fs = require('fs');
describe('res.length', () => {
describe('when Content-Length is defined', () => {
it('should return a number', () => {
const res = response();
res.header['content-length'] = '120';
res.length.should.equal(120);
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});
});
});
describe('res.length', () => {
describe('when Content-Length is defined', () => {
it('should return a number', () => {
const res = response();
res.set('Content-Length', '1024');
res.length.should.equal(1024);
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});
});
describe('when Content-Length is not defined', () => {
describe('and a .body is set', () => {
it('should return a number', () => {
const res = response();
res.body = 'foo';
res.remove('Content-Length');
res.length.should.equal(3);
res.body = 'foo';
res.length.should.equal(3);
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res.body = Buffer.from('foo bar');
res.remove('Content-Length');
res.length.should.equal(7);
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res.body = Buffer.from('foo bar');
res.length.should.equal(7);
res.body = { hello: 'world' };
res.remove('Content-Length');
res.length.should.equal(17);
res.body = { hello: 'world' };
res.length.should.equal(17);
res.body = fs.createReadStream('package.json');
should.not.exist(res.length);
res.body = null;
should.not.exist(res.length);
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});
});
describe('and .body is not', () => {
it('should return undefined', () => {
const res = response();
assert(null == res.length);
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});
});
});
});