540 lines
20 KiB
JavaScript
540 lines
20 KiB
JavaScript
'use strict'
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const chai = require('chai')
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const dirtyChai = require('dirty-chai')
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const { nativeImage } = require('electron')
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const path = require('path')
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const { expect } = chai
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chai.use(dirtyChai)
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describe('nativeImage module', () => {
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const ImageFormat = {
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PNG: 'png',
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JPEG: 'jpeg'
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}
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const images = [
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{
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filename: 'logo.png',
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format: ImageFormat.PNG,
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hasAlphaChannel: true,
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hasDataUrl: false,
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width: 538,
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height: 190
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},
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{
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dataUrl: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVQYlWNgAAIAAAUAAdafFs0AAAAASUVORK5CYII=',
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filename: '1x1.png',
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format: ImageFormat.PNG,
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hasAlphaChannel: true,
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hasDataUrl: true,
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height: 1,
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width: 1
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},
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{
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dataUrl: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAAD91JpzAAAAFklEQVQYlWP8//8/AwMDEwMDAwMDAwAkBgMBBMzldwAAAABJRU5ErkJggg==',
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filename: '2x2.jpg',
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format: ImageFormat.JPEG,
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hasAlphaChannel: false,
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hasDataUrl: true,
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height: 2,
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width: 2
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},
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{
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dataUrl: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/AAAADElEQVQYlWNgIAoAAAAnAAGZWEMnAAAAAElFTkSuQmCC',
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filename: '3x3.png',
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format: ImageFormat.PNG,
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hasAlphaChannel: true,
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hasDataUrl: true,
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height: 3,
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width: 3
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}
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]
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/**
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* @param {?string} filename
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* @returns {?string} Full path.
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*/
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const getImagePathFromFilename = (filename) => {
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return (filename === null) ? null
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: path.join(__dirname, 'fixtures', 'assets', filename)
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}
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/**
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* @param {!Object} image
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* @param {Object} filters
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* @returns {boolean}
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*/
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const imageMatchesTheFilters = (image, filters = null) => {
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if (filters === null) {
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return true
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}
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return Object.entries(filters)
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.every(([key, value]) => image[key] === value)
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}
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/**
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* @param {!Object} filters
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* @returns {!Array} A matching images list.
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*/
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const getImages = (filters) => {
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const matchingImages = images
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.filter(i => imageMatchesTheFilters(i, filters))
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// Add `.path` property to every image.
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matchingImages
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.forEach(i => { i.path = getImagePathFromFilename(i.filename) })
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return matchingImages
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}
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/**
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* @param {!Object} filters
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* @returns {Object} A matching image if any.
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*/
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const getImage = (filters) => {
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const matchingImages = getImages(filters)
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let matchingImage = null
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if (matchingImages.length > 0) {
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matchingImage = matchingImages[0]
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}
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return matchingImage
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}
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describe('createEmpty()', () => {
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it('returns an empty image', () => {
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const empty = nativeImage.createEmpty()
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expect(empty.isEmpty())
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expect(empty.getAspectRatio()).to.equal(1)
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expect(empty.toDataURL()).to.equal('data:image/png;base64,')
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expect(empty.toDataURL({ scaleFactor: 2.0 })).to.equal('data:image/png;base64,')
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expect(empty.getSize()).to.deep.equal({ width: 0, height: 0 })
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expect(empty.getBitmap()).to.be.empty()
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expect(empty.getBitmap({ scaleFactor: 2.0 })).to.be.empty()
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expect(empty.toBitmap()).to.be.empty()
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expect(empty.toBitmap({ scaleFactor: 2.0 })).to.be.empty()
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expect(empty.toJPEG(100)).to.be.empty()
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expect(empty.toPNG()).to.be.empty()
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expect(empty.toPNG({ scaleFactor: 2.0 })).to.be.empty()
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if (process.platform === 'darwin') {
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expect(empty.getNativeHandle()).to.be.empty()
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}
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})
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})
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describe('createFromBuffer(buffer, scaleFactor)', () => {
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it('returns an empty image when the buffer is empty', () => {
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expect(nativeImage.createFromBuffer(Buffer.from([])).isEmpty())
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})
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it('returns an image created from the given buffer', () => {
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const imageA = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))
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const imageB = nativeImage.createFromBuffer(imageA.toPNG())
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expect(imageB.getSize()).to.deep.equal({ width: 538, height: 190 })
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expect(imageA.toBitmap().equals(imageB.toBitmap())).to.be.true()
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const imageC = nativeImage.createFromBuffer(imageA.toJPEG(100))
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expect(imageC.getSize()).to.deep.equal({ width: 538, height: 190 })
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const imageD = nativeImage.createFromBuffer(imageA.toBitmap(),
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{ width: 538, height: 190 })
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expect(imageD.getSize()).to.deep.equal({ width: 538, height: 190 })
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const imageE = nativeImage.createFromBuffer(imageA.toBitmap(),
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{ width: 100, height: 200 })
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expect(imageE.getSize()).to.deep.equal({ width: 100, height: 200 })
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const imageF = nativeImage.createFromBuffer(imageA.toBitmap())
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expect(imageF.isEmpty())
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const imageG = nativeImage.createFromBuffer(imageA.toPNG(),
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{ width: 100, height: 200 })
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expect(imageG.getSize()).to.deep.equal({ width: 538, height: 190 })
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const imageH = nativeImage.createFromBuffer(imageA.toJPEG(100),
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{ width: 100, height: 200 })
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expect(imageH.getSize()).to.deep.equal({ width: 538, height: 190 })
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const imageI = nativeImage.createFromBuffer(imageA.toBitmap(),
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{ width: 538, height: 190, scaleFactor: 2.0 })
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expect(imageI.getSize()).to.deep.equal({ width: 269, height: 95 })
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})
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})
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describe('createFromDataURL(dataURL)', () => {
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it('returns an empty image from the empty string', () => {
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expect(nativeImage.createFromDataURL('').isEmpty())
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})
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it('returns an image created from the given string', () => {
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const imagesData = getImages({ hasDataUrl: true })
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for (const imageData of imagesData) {
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const imageFromPath = nativeImage.createFromPath(imageData.path)
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const imageFromDataUrl = nativeImage.createFromDataURL(imageData.dataUrl)
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expect(imageFromDataUrl.isEmpty())
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expect(imageFromDataUrl.getSize()).to.deep.equal(imageFromPath.getSize())
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expect(imageFromDataUrl.toBitmap()).to.satisfy(
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bitmap => imageFromPath.toBitmap().equals(bitmap))
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expect(imageFromDataUrl.toDataURL()).to.equal(imageFromPath.toDataURL())
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}
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})
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})
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describe('toDataURL()', () => {
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it('returns a PNG data URL', () => {
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const imagesData = getImages({ hasDataUrl: true })
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for (const imageData of imagesData) {
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const imageFromPath = nativeImage.createFromPath(imageData.path)
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const scaleFactors = [1.0, 2.0]
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for (const scaleFactor of scaleFactors) {
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expect(imageFromPath.toDataURL({ scaleFactor })).to.equal(imageData.dataUrl)
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}
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}
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})
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it('returns a data URL at 1x scale factor by default', () => {
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const imageData = getImage({ filename: 'logo.png' })
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const image = nativeImage.createFromPath(imageData.path)
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const imageOne = nativeImage.createFromBuffer(image.toPNG(), {
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width: image.getSize().width,
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height: image.getSize().height,
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scaleFactor: 2.0
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})
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expect(imageOne.getSize()).to.deep.equal(
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{ width: imageData.width / 2, height: imageData.height / 2 })
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const imageTwo = nativeImage.createFromDataURL(imageOne.toDataURL())
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expect(imageTwo.getSize()).to.deep.equal(
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{ width: imageData.width, height: imageData.height })
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expect(imageOne.toBitmap().equals(imageTwo.toBitmap())).to.be.true()
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})
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it('supports a scale factor', () => {
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const imageData = getImage({ filename: 'logo.png' })
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const image = nativeImage.createFromPath(imageData.path)
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const expectedSize = { width: imageData.width, height: imageData.height }
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const imageFromDataUrlOne = nativeImage.createFromDataURL(
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image.toDataURL({ scaleFactor: 1.0 }))
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expect(imageFromDataUrlOne.getSize()).to.deep.equal(expectedSize)
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const imageFromDataUrlTwo = nativeImage.createFromDataURL(
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image.toDataURL({ scaleFactor: 2.0 }))
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expect(imageFromDataUrlTwo.getSize()).to.deep.equal(expectedSize)
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})
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})
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describe('toPNG()', () => {
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it('returns a buffer at 1x scale factor by default', () => {
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const imageData = getImage({ filename: 'logo.png' })
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const imageA = nativeImage.createFromPath(imageData.path)
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const imageB = nativeImage.createFromBuffer(imageA.toPNG(), {
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width: imageA.getSize().width,
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height: imageA.getSize().height,
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scaleFactor: 2.0
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})
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expect(imageB.getSize()).to.deep.equal(
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{ width: imageData.width / 2, height: imageData.height / 2 })
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const imageC = nativeImage.createFromBuffer(imageB.toPNG())
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expect(imageC.getSize()).to.deep.equal(
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{ width: imageData.width, height: imageData.height })
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expect(imageB.toBitmap().equals(imageC.toBitmap())).to.be.true()
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})
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it('supports a scale factor', () => {
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const imageData = getImage({ filename: 'logo.png' })
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const image = nativeImage.createFromPath(imageData.path)
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const imageFromBufferOne = nativeImage.createFromBuffer(
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image.toPNG({ scaleFactor: 1.0 }))
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expect(imageFromBufferOne.getSize()).to.deep.equal(
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{ width: imageData.width, height: imageData.height })
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const imageFromBufferTwo = nativeImage.createFromBuffer(
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image.toPNG({ scaleFactor: 2.0 }), { scaleFactor: 2.0 })
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expect(imageFromBufferTwo.getSize()).to.deep.equal(
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{ width: imageData.width / 2, height: imageData.height / 2 })
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})
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})
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describe('createFromPath(path)', () => {
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it('returns an empty image for invalid paths', () => {
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expect(nativeImage.createFromPath('').isEmpty())
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expect(nativeImage.createFromPath('does-not-exist.png').isEmpty())
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expect(nativeImage.createFromPath('does-not-exist.ico').isEmpty())
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expect(nativeImage.createFromPath(__dirname).isEmpty())
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expect(nativeImage.createFromPath(__filename).isEmpty())
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})
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it('loads images from paths relative to the current working directory', () => {
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const imagePath = path.relative('.', path.join(__dirname, 'fixtures', 'assets', 'logo.png'))
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const image = nativeImage.createFromPath(imagePath)
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expect(image.isEmpty()).to.be.false()
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expect(image.getSize()).to.deep.equal({ width: 538, height: 190 })
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})
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it('loads images from paths with `.` segments', () => {
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const imagePath = `${path.join(__dirname, 'fixtures')}${path.sep}.${path.sep}${path.join('assets', 'logo.png')}`
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const image = nativeImage.createFromPath(imagePath)
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expect(image.isEmpty()).to.be.false()
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expect(image.getSize()).to.deep.equal({ width: 538, height: 190 })
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})
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it('loads images from paths with `..` segments', () => {
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const imagePath = `${path.join(__dirname, 'fixtures', 'api')}${path.sep}..${path.sep}${path.join('assets', 'logo.png')}`
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const image = nativeImage.createFromPath(imagePath)
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expect(image.isEmpty()).to.be.false()
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expect(image.getSize()).to.deep.equal({ width: 538, height: 190 })
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})
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it('Gets an NSImage pointer on macOS', function () {
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if (process.platform !== 'darwin') {
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// FIXME(alexeykuzmin): Skip the test.
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// this.skip()
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return
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}
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const imagePath = `${path.join(__dirname, 'fixtures', 'api')}${path.sep}..${path.sep}${path.join('assets', 'logo.png')}`
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const image = nativeImage.createFromPath(imagePath)
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const nsimage = image.getNativeHandle()
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expect(nsimage).to.have.lengthOf(8)
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// If all bytes are null, that's Bad
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const allBytesAreNotNull = nsimage.reduce((acc, x) => acc || (x !== 0), false)
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expect(allBytesAreNotNull)
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})
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it('loads images from .ico files on Windows', function () {
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if (process.platform !== 'win32') {
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// FIXME(alexeykuzmin): Skip the test.
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// this.skip()
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return
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}
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const imagePath = path.join(__dirname, 'fixtures', 'assets', 'icon.ico')
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const image = nativeImage.createFromPath(imagePath)
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expect(image.isEmpty()).to.be.false()
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expect(image.getSize()).to.deep.equal({ width: 256, height: 256 })
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})
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})
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describe('createFromNamedImage(name)', () => {
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it('returns empty for invalid options', () => {
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const image = nativeImage.createFromNamedImage('totally_not_real')
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expect(image.isEmpty())
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})
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it('returns empty on non-darwin platforms', function () {
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if (process.platform === 'darwin') {
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// FIXME(alexeykuzmin): Skip the test.
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// this.skip()
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return
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}
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const image = nativeImage.createFromNamedImage('NSActionTemplate')
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expect(image.isEmpty())
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})
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it('returns a valid image on darwin', function () {
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if (process.platform !== 'darwin') {
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// FIXME(alexeykuzmin): Skip the test.
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// this.skip()
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return
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}
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const image = nativeImage.createFromNamedImage('NSActionTemplate')
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expect(image.isEmpty()).to.be.false()
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})
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it('returns allows an HSL shift for a valid image on darwin', function () {
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if (process.platform !== 'darwin') {
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// FIXME(alexeykuzmin): Skip the test.
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// this.skip()
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return
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}
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const image = nativeImage.createFromNamedImage('NSActionTemplate', [0.5, 0.2, 0.8])
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expect(image.isEmpty()).to.be.false()
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})
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})
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describe('resize(options)', () => {
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it('returns a resized image', () => {
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const image = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))
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for (const [resizeTo, expectedSize] of new Map([
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[{}, { width: 538, height: 190 }],
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[{ width: 269 }, { width: 269, height: 95 }],
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[{ width: 600 }, { width: 600, height: 212 }],
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[{ height: 95 }, { width: 269, height: 95 }],
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[{ height: 200 }, { width: 566, height: 200 }],
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[{ width: 80, height: 65 }, { width: 80, height: 65 }],
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[{ width: 600, height: 200 }, { width: 600, height: 200 }],
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[{ width: 0, height: 0 }, { width: 0, height: 0 }],
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[{ width: -1, height: -1 }, { width: 0, height: 0 }]
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])) {
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const actualSize = image.resize(resizeTo).getSize()
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expect(actualSize).to.deep.equal(expectedSize)
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}
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})
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it('returns an empty image when called on an empty image', () => {
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expect(nativeImage.createEmpty().resize({ width: 1, height: 1 }).isEmpty())
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expect(nativeImage.createEmpty().resize({ width: 0, height: 0 }).isEmpty())
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})
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it('supports a quality option', () => {
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const image = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))
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const good = image.resize({ width: 100, height: 100, quality: 'good' })
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const better = image.resize({ width: 100, height: 100, quality: 'better' })
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const best = image.resize({ width: 100, height: 100, quality: 'best' })
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expect(good.toPNG()).to.have.lengthOf.at.most(better.toPNG().length)
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expect(better.toPNG()).to.have.lengthOf.below(best.toPNG().length)
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})
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})
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describe('crop(bounds)', () => {
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it('returns an empty image when called on an empty image', () => {
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expect(nativeImage.createEmpty().crop({ width: 1, height: 2, x: 0, y: 0 }).isEmpty())
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expect(nativeImage.createEmpty().crop({ width: 0, height: 0, x: 0, y: 0 }).isEmpty())
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})
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it('returns an empty image when the bounds are invalid', () => {
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const image = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))
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expect(image.crop({ width: 0, height: 0, x: 0, y: 0 }).isEmpty())
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expect(image.crop({ width: -1, height: 10, x: 0, y: 0 }).isEmpty())
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expect(image.crop({ width: 10, height: -35, x: 0, y: 0 }).isEmpty())
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expect(image.crop({ width: 100, height: 100, x: 1000, y: 1000 }).isEmpty())
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})
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it('returns a cropped image', () => {
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const image = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))
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const cropA = image.crop({ width: 25, height: 64, x: 0, y: 0 })
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const cropB = image.crop({ width: 25, height: 64, x: 30, y: 40 })
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expect(cropA.getSize()).to.deep.equal({ width: 25, height: 64 })
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expect(cropB.getSize()).to.deep.equal({ width: 25, height: 64 })
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expect(cropA.toPNG().equals(cropB.toPNG())).to.be.false()
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})
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})
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describe('getAspectRatio()', () => {
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it('returns an aspect ratio of an empty image', () => {
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expect(nativeImage.createEmpty().getAspectRatio()).to.equal(1.0)
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})
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it('returns an aspect ratio of an image', () => {
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const imageData = getImage({ filename: 'logo.png' })
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// imageData.width / imageData.height = 2.831578947368421
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const expectedAspectRatio = 2.8315789699554443
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const image = nativeImage.createFromPath(imageData.path)
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expect(image.getAspectRatio()).to.equal(expectedAspectRatio)
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})
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})
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describe('addRepresentation()', () => {
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it('supports adding a buffer representation for a scale factor', () => {
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const image = nativeImage.createEmpty()
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const imageDataOne = getImage({ width: 1, height: 1 })
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image.addRepresentation({
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scaleFactor: 1.0,
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buffer: nativeImage.createFromPath(imageDataOne.path).toPNG()
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})
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const imageDataTwo = getImage({ width: 2, height: 2 })
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image.addRepresentation({
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scaleFactor: 2.0,
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buffer: nativeImage.createFromPath(imageDataTwo.path).toPNG()
|
|
})
|
|
|
|
const imageDataThree = getImage({ width: 3, height: 3 })
|
|
image.addRepresentation({
|
|
scaleFactor: 3.0,
|
|
buffer: nativeImage.createFromPath(imageDataThree.path).toPNG()
|
|
})
|
|
|
|
image.addRepresentation({
|
|
scaleFactor: 4.0,
|
|
buffer: 'invalid'
|
|
})
|
|
|
|
expect(image.isEmpty()).to.be.false()
|
|
expect(image.getSize()).to.deep.equal({ width: 1, height: 1 })
|
|
|
|
expect(image.toDataURL({ scaleFactor: 1.0 })).to.equal(imageDataOne.dataUrl)
|
|
expect(image.toDataURL({ scaleFactor: 2.0 })).to.equal(imageDataTwo.dataUrl)
|
|
expect(image.toDataURL({ scaleFactor: 3.0 })).to.equal(imageDataThree.dataUrl)
|
|
expect(image.toDataURL({ scaleFactor: 4.0 })).to.equal(imageDataThree.dataUrl)
|
|
})
|
|
|
|
it('supports adding a data URL representation for a scale factor', () => {
|
|
const image = nativeImage.createEmpty()
|
|
|
|
const imageDataOne = getImage({ width: 1, height: 1 })
|
|
image.addRepresentation({
|
|
scaleFactor: 1.0,
|
|
dataURL: imageDataOne.dataUrl
|
|
})
|
|
|
|
const imageDataTwo = getImage({ width: 2, height: 2 })
|
|
image.addRepresentation({
|
|
scaleFactor: 2.0,
|
|
dataURL: imageDataTwo.dataUrl
|
|
})
|
|
|
|
const imageDataThree = getImage({ width: 3, height: 3 })
|
|
image.addRepresentation({
|
|
scaleFactor: 3.0,
|
|
dataURL: imageDataThree.dataUrl
|
|
})
|
|
|
|
image.addRepresentation({
|
|
scaleFactor: 4.0,
|
|
dataURL: 'invalid'
|
|
})
|
|
|
|
expect(image.isEmpty()).to.be.false()
|
|
expect(image.getSize()).to.deep.equal({ width: 1, height: 1 })
|
|
|
|
expect(image.toDataURL({ scaleFactor: 1.0 })).to.equal(imageDataOne.dataUrl)
|
|
expect(image.toDataURL({ scaleFactor: 2.0 })).to.equal(imageDataTwo.dataUrl)
|
|
expect(image.toDataURL({ scaleFactor: 3.0 })).to.equal(imageDataThree.dataUrl)
|
|
expect(image.toDataURL({ scaleFactor: 4.0 })).to.equal(imageDataThree.dataUrl)
|
|
})
|
|
|
|
it('supports adding a representation to an existing image', () => {
|
|
const imageDataOne = getImage({ width: 1, height: 1 })
|
|
const image = nativeImage.createFromPath(imageDataOne.path)
|
|
|
|
const imageDataTwo = getImage({ width: 2, height: 2 })
|
|
image.addRepresentation({
|
|
scaleFactor: 2.0,
|
|
dataURL: imageDataTwo.dataUrl
|
|
})
|
|
|
|
const imageDataThree = getImage({ width: 3, height: 3 })
|
|
image.addRepresentation({
|
|
scaleFactor: 2.0,
|
|
dataURL: imageDataThree.dataUrl
|
|
})
|
|
|
|
expect(image.toDataURL({ scaleFactor: 1.0 })).to.equal(imageDataOne.dataUrl)
|
|
expect(image.toDataURL({ scaleFactor: 2.0 })).to.equal(imageDataTwo.dataUrl)
|
|
})
|
|
})
|
|
})
|