foxy-moxy/test/test.js

const request = require('supertest')
const assert = require('assert')
const sharp = require('sharp')

const app = require('../server')

const testUID = 4125370

describe('Foxy-moxy', () => {
    describe('fox generation', () => {
        it('should respect widths < 400', (done) => {
            const width = 158
            request(app)
                .get(`/${width}/${testUID}`)
                .expect('Content-Type', 'image/png')
                .expect(200)
                .end(function(err, res) {
                    assert(!err, String(err))
                    sharp(res.body).metadata((err, metadata) => {
                        assert(!err, String(err))
                        assert.equal(metadata.format, 'png')
                        assert.equal(metadata.height, width)
                        assert.equal(metadata.width, width)
                        done()
                    })
                })
        })

        it('should allow max width of 400', (done) => {
            const width = 510
            request(app)
                .get(`/${width}/${testUID}`)
                .expect('Content-Type', 'image/png')
                .expect(200)
                .end(function(err, res) {
                    assert(!err, String(err))
                    sharp(res.body).metadata((err, metadata) => {
                        assert(!err, String(err))
                        assert.equal(metadata.format, 'png')
                        assert.equal(metadata.height, 400)
                        assert.equal(metadata.width, 400)
                        done()
                    })
                })
        })
    })
})