How to use image method in ATX

Best Python code snippet using ATX

barriers.js

Source:barriers.js Github

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...65 y: this.y + this.image_size66 };67 push();68 imageMode(CENTER);69 image(this.left_image_1, barrier_left_1.x, barrier_left_1.y, this.image_size, this.image_size);70 image(this.left_image_2, barrier_left_2.x, barrier_left_2.y, this.image_size, this.image_size);71 image(this.left_image_3, barrier_left_3.x, barrier_left_3.y, this.image_size, this.image_size);72 image(this.right_image_1, barrier_right_1.x, barrier_right_1.y, this.image_size, this.image_size);73 image(this.right_image_2, barrier_right_2.x, barrier_right_2.y, this.image_size, this.image_size);74 image(this.right_image_3, barrier_right_3.x, barrier_right_3.y, this.image_size, this.image_size);75 image(this.middle_image_1, barrier_midle_1.x, barrier_midle_1.y, this.image_size, this.image_size);76 image(this.middle_image_2, barrier_midle_2.x, barrier_midle_2.y, this.image_size, this.image_size);77 if (this.down_damaged == 0 && this.up_damaged != this.middle_damage_max) {78 image(image_barrier_bottom_edge, barrier_midle_3.x, barrier_midle_3.y, this.image_size, this.image_size);79 }80 pop();81 }82 update() {83 if(this.left_up_damaged + this.left_down_damaged >= this.left_damage_max){/​/​Prevent damage beyond the limit.84 this.left_up_damaged = this.left_damage_max;85 this.left_down_damaged = 0;86 }87 if(this.right_up_damaged + this.right_down_damaged >= this.right_damage_max){88 this.right_up_damaged = this.right_damage_max;89 this.right_down_damaged = 0;90 }91 if(this.up_damaged + this.down_damaged >= this.middle_damage_max){92 this.up_damaged = this.middle_damage_max;...

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api-native-image-spec.js

Source:api-native-image-spec.js Github

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1'use strict'2/​* eslint-disable no-unused-expressions */​3const {expect} = require('chai')4const {nativeImage} = require('electron')5const path = require('path')6describe('nativeImage module', () => {7 const ImageFormat = {8 PNG: 'png',9 JPEG: 'jpeg'10 }11 const images = [12 {13 filename: 'logo.png',14 format: ImageFormat.PNG,15 hasAlphaChannel: true,16 hasDataUrl: false,17 width: 538,18 height: 19019 },20 {21 dataUrl: 'data:image/​png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVQYlWNgAAIAAAUAAdafFs0AAAAASUVORK5CYII=',22 filename: '1x1.png',23 format: ImageFormat.PNG,24 hasAlphaChannel: true,25 hasDataUrl: true,26 height: 1,27 width: 128 },29 {30 dataUrl: 'data:image/​png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAAD91JpzAAAAFklEQVQYlWP8/​/​8/​AwMDEwMDAwMDAwAkBgMBBMzldwAAAABJRU5ErkJggg==',31 filename: '2x2.jpg',32 format: ImageFormat.JPEG,33 hasAlphaChannel: false,34 hasDataUrl: true,35 height: 2,36 width: 237 },38 {39 dataUrl: 'data:image/​png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAADCAYAAABWKLW/​AAAADElEQVQYlWNgIAoAAAAnAAGZWEMnAAAAAElFTkSuQmCC',40 filename: '3x3.png',41 format: ImageFormat.PNG,42 hasAlphaChannel: true,43 hasDataUrl: true,44 height: 3,45 width: 346 }47 ]48 /​**49 * @param {?string} filename50 * @returns {?string} Full path.51 */​52 const getImagePathFromFilename = (filename) => {53 return (filename === null) ? null54 : path.join(__dirname, 'fixtures', 'assets', filename)55 }56 /​**57 * @param {!Object} image58 * @param {Object} filters59 * @returns {boolean}60 */​61 const imageMatchesTheFilters = (image, filters = null) => {62 if (filters === null) {63 return true64 }65 return Object.entries(filters)66 .every(([key, value]) => image[key] === value)67 }68 /​**69 * @param {!Object} filters70 * @returns {!Array} A matching images list.71 */​72 const getImages = (filters) => {73 const matchingImages = images74 .filter(i => imageMatchesTheFilters(i, filters))75 /​/​ Add `.path` property to every image.76 matchingImages77 .forEach(i => { i.path = getImagePathFromFilename(i.filename) })78 return matchingImages79 }80 /​**81 * @param {!Object} filters82 * @returns {Object} A matching image if any.83 */​84 const getImage = (filters) => {85 const matchingImages = getImages(filters)86 let matchingImage = null87 if (matchingImages.length > 0) {88 matchingImage = matchingImages[0]89 }90 return matchingImage91 }92 describe('createEmpty()', () => {93 it('returns an empty image', () => {94 const empty = nativeImage.createEmpty()95 expect(empty.isEmpty())96 expect(empty.getAspectRatio()).to.equal(1)97 expect(empty.toDataURL()).to.equal('data:image/​png;base64,')98 expect(empty.toDataURL({scaleFactor: 2.0})).to.equal('data:image/​png;base64,')99 expect(empty.getSize()).to.deep.equal({width: 0, height: 0})100 expect(empty.getBitmap()).to.be.empty101 expect(empty.getBitmap({scaleFactor: 2.0})).to.be.empty102 expect(empty.toBitmap()).to.be.empty103 expect(empty.toBitmap({scaleFactor: 2.0})).to.be.empty104 expect(empty.toJPEG(100)).to.be.empty105 expect(empty.toPNG()).to.be.empty106 expect(empty.toPNG({scaleFactor: 2.0})).to.be.empty107 if (process.platform === 'darwin') {108 expect(empty.getNativeHandle()).to.be.empty109 }110 })111 })112 describe('createFromBuffer(buffer, scaleFactor)', () => {113 it('returns an empty image when the buffer is empty', () => {114 expect(nativeImage.createFromBuffer(Buffer.from([])).isEmpty())115 })116 it('returns an image created from the given buffer', () => {117 const imageA = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))118 const imageB = nativeImage.createFromBuffer(imageA.toPNG())119 expect(imageB.getSize()).to.deep.equal({width: 538, height: 190})120 expect(imageA.toBitmap().equals(imageB.toBitmap())).to.be.true121 const imageC = nativeImage.createFromBuffer(imageA.toJPEG(100))122 expect(imageC.getSize()).to.deep.equal({width: 538, height: 190})123 const imageD = nativeImage.createFromBuffer(imageA.toBitmap(),124 {width: 538, height: 190})125 expect(imageD.getSize()).to.deep.equal({width: 538, height: 190})126 const imageE = nativeImage.createFromBuffer(imageA.toBitmap(),127 {width: 100, height: 200})128 expect(imageE.getSize()).to.deep.equal({width: 100, height: 200})129 const imageF = nativeImage.createFromBuffer(imageA.toBitmap())130 expect(imageF.isEmpty())131 const imageG = nativeImage.createFromBuffer(imageA.toPNG(),132 {width: 100, height: 200})133 expect(imageG.getSize()).to.deep.equal({width: 538, height: 190})134 const imageH = nativeImage.createFromBuffer(imageA.toJPEG(100),135 {width: 100, height: 200})136 expect(imageH.getSize()).to.deep.equal({width: 538, height: 190})137 const imageI = nativeImage.createFromBuffer(imageA.toBitmap(),138 {width: 538, height: 190, scaleFactor: 2.0})139 expect(imageI.getSize()).to.deep.equal({width: 269, height: 95})140 })141 })142 describe('createFromDataURL(dataURL)', () => {143 it('returns an empty image from the empty string', () => {144 expect(nativeImage.createFromDataURL('').isEmpty())145 })146 it('returns an image created from the given string', () => {147 const imagesData = getImages({hasDataUrl: true})148 for (const imageData of imagesData) {149 const imageFromPath = nativeImage.createFromPath(imageData.path)150 const imageFromDataUrl = nativeImage.createFromDataURL(imageData.dataUrl)151 expect(imageFromDataUrl.isEmpty())152 expect(imageFromDataUrl.getSize()).to.deep.equal(imageFromPath.getSize())153 expect(imageFromDataUrl.toBitmap()).to.satisfy(154 bitmap => imageFromPath.toBitmap().equals(bitmap))155 expect(imageFromDataUrl.toDataURL()).to.equal(imageFromPath.toDataURL())156 }157 })158 })159 describe('toDataURL()', () => {160 it('returns a PNG data URL', () => {161 const imagesData = getImages({hasDataUrl: true})162 for (const imageData of imagesData) {163 const imageFromPath = nativeImage.createFromPath(imageData.path)164 const scaleFactors = [1.0, 2.0]165 for (const scaleFactor of scaleFactors) {166 expect(imageFromPath.toDataURL({scaleFactor})).to.equal(imageData.dataUrl)167 }168 }169 })170 it('returns a data URL at 1x scale factor by default', () => {171 const imageData = getImage({filename: 'logo.png'})172 const image = nativeImage.createFromPath(imageData.path)173 const imageOne = nativeImage.createFromBuffer(image.toPNG(), {174 width: image.getSize().width,175 height: image.getSize().height,176 scaleFactor: 2.0177 })178 expect(imageOne.getSize()).to.deep.equal(179 {width: imageData.width /​ 2, height: imageData.height /​ 2})180 const imageTwo = nativeImage.createFromDataURL(imageOne.toDataURL())181 expect(imageTwo.getSize()).to.deep.equal(182 {width: imageData.width, height: imageData.height})183 expect(imageOne.toBitmap().equals(imageTwo.toBitmap())).to.be.true184 })185 it('supports a scale factor', () => {186 const imageData = getImage({filename: 'logo.png'})187 const image = nativeImage.createFromPath(imageData.path)188 const expectedSize = {width: imageData.width, height: imageData.height}189 const imageFromDataUrlOne = nativeImage.createFromDataURL(190 image.toDataURL({scaleFactor: 1.0}))191 expect(imageFromDataUrlOne.getSize()).to.deep.equal(expectedSize)192 const imageFromDataUrlTwo = nativeImage.createFromDataURL(193 image.toDataURL({scaleFactor: 2.0}))194 expect(imageFromDataUrlTwo.getSize()).to.deep.equal(expectedSize)195 })196 })197 describe('toPNG()', () => {198 it('returns a buffer at 1x scale factor by default', () => {199 const imageData = getImage({filename: 'logo.png'})200 const imageA = nativeImage.createFromPath(imageData.path)201 const imageB = nativeImage.createFromBuffer(imageA.toPNG(), {202 width: imageA.getSize().width,203 height: imageA.getSize().height,204 scaleFactor: 2.0205 })206 expect(imageB.getSize()).to.deep.equal(207 {width: imageData.width /​ 2, height: imageData.height /​ 2})208 const imageC = nativeImage.createFromBuffer(imageB.toPNG())209 expect(imageC.getSize()).to.deep.equal(210 {width: imageData.width, height: imageData.height})211 expect(imageB.toBitmap().equals(imageC.toBitmap())).to.be.true212 })213 it('supports a scale factor', () => {214 const imageData = getImage({filename: 'logo.png'})215 const image = nativeImage.createFromPath(imageData.path)216 const imageFromBufferOne = nativeImage.createFromBuffer(217 image.toPNG({scaleFactor: 1.0}))218 expect(imageFromBufferOne.getSize()).to.deep.equal(219 {width: imageData.width, height: imageData.height})220 const imageFromBufferTwo = nativeImage.createFromBuffer(221 image.toPNG({scaleFactor: 2.0}), {scaleFactor: 2.0})222 expect(imageFromBufferTwo.getSize()).to.deep.equal(223 {width: imageData.width /​ 2, height: imageData.height /​ 2})224 })225 })226 describe('createFromPath(path)', () => {227 it('returns an empty image for invalid paths', () => {228 expect(nativeImage.createFromPath('').isEmpty())229 expect(nativeImage.createFromPath('does-not-exist.png').isEmpty())230 expect(nativeImage.createFromPath('does-not-exist.ico').isEmpty())231 expect(nativeImage.createFromPath(__dirname).isEmpty())232 expect(nativeImage.createFromPath(__filename).isEmpty())233 })234 it('loads images from paths relative to the current working directory', () => {235 const imagePath = `.${path.sep}${path.join('spec', 'fixtures', 'assets', 'logo.png')}`236 const image = nativeImage.createFromPath(imagePath)237 expect(image.isEmpty()).to.be.false238 expect(image.getSize()).to.deep.equal({width: 538, height: 190})239 })240 it('loads images from paths with `.` segments', () => {241 const imagePath = `${path.join(__dirname, 'fixtures')}${path.sep}.${path.sep}${path.join('assets', 'logo.png')}`242 const image = nativeImage.createFromPath(imagePath)243 expect(image.isEmpty()).to.be.false244 expect(image.getSize()).to.deep.equal({width: 538, height: 190})245 })246 it('loads images from paths with `..` segments', () => {247 const imagePath = `${path.join(__dirname, 'fixtures', 'api')}${path.sep}..${path.sep}${path.join('assets', 'logo.png')}`248 const image = nativeImage.createFromPath(imagePath)249 expect(image.isEmpty()).to.be.false250 expect(image.getSize()).to.deep.equal({width: 538, height: 190})251 })252 it('Gets an NSImage pointer on macOS', function () {253 if (process.platform !== 'darwin') {254 /​/​ FIXME(alexeykuzmin): Skip the test.255 /​/​ this.skip()256 return257 }258 const imagePath = `${path.join(__dirname, 'fixtures', 'api')}${path.sep}..${path.sep}${path.join('assets', 'logo.png')}`259 const image = nativeImage.createFromPath(imagePath)260 const nsimage = image.getNativeHandle()261 expect(nsimage).to.have.lengthOf(8)262 /​/​ If all bytes are null, that's Bad263 const allBytesAreNotNull = nsimage.reduce((acc, x) => acc || (x !== 0), false)264 expect(allBytesAreNotNull)265 })266 it('loads images from .ico files on Windows', function () {267 if (process.platform !== 'win32') {268 /​/​ FIXME(alexeykuzmin): Skip the test.269 /​/​ this.skip()270 return271 }272 const imagePath = path.join(__dirname, 'fixtures', 'assets', 'icon.ico')273 const image = nativeImage.createFromPath(imagePath)274 expect(image.isEmpty()).to.be.false275 expect(image.getSize()).to.deep.equal({width: 256, height: 256})276 })277 })278 describe('createFromNamedImage(name)', () => {279 it('returns empty for invalid options', () => {280 const image = nativeImage.createFromNamedImage('totally_not_real')281 expect(image.isEmpty())282 })283 it('returns empty on non-darwin platforms', function () {284 if (process.platform === 'darwin') {285 /​/​ FIXME(alexeykuzmin): Skip the test.286 /​/​ this.skip()287 return288 }289 const image = nativeImage.createFromNamedImage('NSActionTemplate')290 expect(image.isEmpty())291 })292 it('returns a valid image on darwin', function () {293 if (process.platform !== 'darwin') {294 /​/​ FIXME(alexeykuzmin): Skip the test.295 /​/​ this.skip()296 return297 }298 const image = nativeImage.createFromNamedImage('NSActionTemplate')299 expect(image.isEmpty()).to.be.false300 })301 it('returns allows an HSL shift for a valid image on darwin', function () {302 if (process.platform !== 'darwin') {303 /​/​ FIXME(alexeykuzmin): Skip the test.304 /​/​ this.skip()305 return306 }307 const image = nativeImage.createFromNamedImage('NSActionTemplate', [0.5, 0.2, 0.8])308 expect(image.isEmpty()).to.be.false309 })310 })311 describe('resize(options)', () => {312 it('returns a resized image', () => {313 const image = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))314 for (const [resizeTo, expectedSize] of new Map([315 [{}, {width: 538, height: 190}],316 [{width: 269}, {width: 269, height: 95}],317 [{width: 600}, {width: 600, height: 212}],318 [{height: 95}, {width: 269, height: 95}],319 [{height: 200}, {width: 566, height: 200}],320 [{width: 80, height: 65}, {width: 80, height: 65}],321 [{width: 600, height: 200}, {width: 600, height: 200}],322 [{width: 0, height: 0}, {width: 0, height: 0}],323 [{width: -1, height: -1}, {width: 0, height: 0}]324 ])) {325 const actualSize = image.resize(resizeTo).getSize()326 expect(actualSize).to.deep.equal(expectedSize)327 }328 })329 it('returns an empty image when called on an empty image', () => {330 expect(nativeImage.createEmpty().resize({width: 1, height: 1}).isEmpty())331 expect(nativeImage.createEmpty().resize({width: 0, height: 0}).isEmpty())332 })333 it('supports a quality option', () => {334 const image = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))335 const good = image.resize({width: 100, height: 100, quality: 'good'})336 const better = image.resize({width: 100, height: 100, quality: 'better'})337 const best = image.resize({width: 100, height: 100, quality: 'best'})338 expect(good.toPNG()).to.have.lengthOf.at.most(better.toPNG().length)339 expect(better.toPNG()).to.have.lengthOf.below(best.toPNG().length)340 })341 })342 describe('crop(bounds)', () => {343 it('returns an empty image when called on an empty image', () => {344 expect(nativeImage.createEmpty().crop({width: 1, height: 2, x: 0, y: 0}).isEmpty())345 expect(nativeImage.createEmpty().crop({width: 0, height: 0, x: 0, y: 0}).isEmpty())346 })347 it('returns an empty image when the bounds are invalid', () => {348 const image = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))349 expect(image.crop({width: 0, height: 0, x: 0, y: 0}).isEmpty())350 expect(image.crop({width: -1, height: 10, x: 0, y: 0}).isEmpty())351 expect(image.crop({width: 10, height: -35, x: 0, y: 0}).isEmpty())352 expect(image.crop({width: 100, height: 100, x: 1000, y: 1000}).isEmpty())353 })354 it('returns a cropped image', () => {355 const image = nativeImage.createFromPath(path.join(__dirname, 'fixtures', 'assets', 'logo.png'))356 const cropA = image.crop({width: 25, height: 64, x: 0, y: 0})357 const cropB = image.crop({width: 25, height: 64, x: 30, y: 40})358 expect(cropA.getSize()).to.deep.equal({width: 25, height: 64})359 expect(cropB.getSize()).to.deep.equal({width: 25, height: 64})360 expect(cropA.toPNG().equals(cropB.toPNG())).to.be.false361 })362 })363 describe('getAspectRatio()', () => {364 it('returns an aspect ratio of an empty image', () => {365 expect(nativeImage.createEmpty().getAspectRatio()).to.equal(1.0)366 })367 it('returns an aspect ratio of an image', () => {368 const imageData = getImage({filename: 'logo.png'})369 /​/​ imageData.width /​ imageData.height = 2.831578947368421370 const expectedAspectRatio = 2.8315789699554443371 const image = nativeImage.createFromPath(imageData.path)372 expect(image.getAspectRatio()).to.equal(expectedAspectRatio)373 })374 })375 describe('addRepresentation()', () => {376 it('supports adding a buffer representation for a scale factor', () => {377 const image = nativeImage.createEmpty()378 const imageDataOne = getImage({width: 1, height: 1})379 image.addRepresentation({380 scaleFactor: 1.0,381 buffer: nativeImage.createFromPath(imageDataOne.path).toPNG()382 })383 const imageDataTwo = getImage({width: 2, height: 2})384 image.addRepresentation({385 scaleFactor: 2.0,386 buffer: nativeImage.createFromPath(imageDataTwo.path).toPNG()387 })388 const imageDataThree = getImage({width: 3, height: 3})389 image.addRepresentation({390 scaleFactor: 3.0,391 buffer: nativeImage.createFromPath(imageDataThree.path).toPNG()392 })393 image.addRepresentation({394 scaleFactor: 4.0,395 buffer: 'invalid'396 })397 expect(image.isEmpty()).to.be.false398 expect(image.getSize()).to.deep.equal({width: 1, height: 1})399 expect(image.toDataURL({scaleFactor: 1.0})).to.equal(imageDataOne.dataUrl)400 expect(image.toDataURL({scaleFactor: 2.0})).to.equal(imageDataTwo.dataUrl)401 expect(image.toDataURL({scaleFactor: 3.0})).to.equal(imageDataThree.dataUrl)402 expect(image.toDataURL({scaleFactor: 4.0})).to.equal(imageDataThree.dataUrl)403 })404 it('supports adding a data URL representation for a scale factor', () => {405 const image = nativeImage.createEmpty()406 const imageDataOne = getImage({width: 1, height: 1})407 image.addRepresentation({408 scaleFactor: 1.0,409 dataURL: imageDataOne.dataUrl410 })411 const imageDataTwo = getImage({width: 2, height: 2})412 image.addRepresentation({413 scaleFactor: 2.0,414 dataURL: imageDataTwo.dataUrl415 })416 const imageDataThree = getImage({width: 3, height: 3})417 image.addRepresentation({418 scaleFactor: 3.0,419 dataURL: imageDataThree.dataUrl420 })421 image.addRepresentation({422 scaleFactor: 4.0,423 dataURL: 'invalid'424 })425 expect(image.isEmpty()).to.be.false426 expect(image.getSize()).to.deep.equal({width: 1, height: 1})427 expect(image.toDataURL({scaleFactor: 1.0})).to.equal(imageDataOne.dataUrl)428 expect(image.toDataURL({scaleFactor: 2.0})).to.equal(imageDataTwo.dataUrl)429 expect(image.toDataURL({scaleFactor: 3.0})).to.equal(imageDataThree.dataUrl)430 expect(image.toDataURL({scaleFactor: 4.0})).to.equal(imageDataThree.dataUrl)431 })432 it('supports adding a representation to an existing image', () => {433 const imageDataOne = getImage({width: 1, height: 1})434 const image = nativeImage.createFromPath(imageDataOne.path)435 const imageDataTwo = getImage({width: 2, height: 2})436 image.addRepresentation({437 scaleFactor: 2.0,438 dataURL: imageDataTwo.dataUrl439 })440 const imageDataThree = getImage({width: 3, height: 3})441 image.addRepresentation({442 scaleFactor: 2.0,443 dataURL: imageDataThree.dataUrl444 })445 expect(image.toDataURL({scaleFactor: 1.0})).to.equal(imageDataOne.dataUrl)446 expect(image.toDataURL({scaleFactor: 2.0})).to.equal(imageDataTwo.dataUrl)447 })448 })...

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test_images.py

Source:test_images.py Github

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1import unittest2import tkinter3from test import support4from tkinter.test.support import AbstractTkTest, AbstractDefaultRootTest, requires_tcl5support.requires('gui')6class MiscTest(AbstractTkTest, unittest.TestCase):7 def test_image_types(self):8 image_types = self.root.image_types()9 self.assertIsInstance(image_types, tuple)10 self.assertIn('photo', image_types)11 self.assertIn('bitmap', image_types)12 def test_image_names(self):13 image_names = self.root.image_names()14 self.assertIsInstance(image_names, tuple)15class DefaultRootTest(AbstractDefaultRootTest, unittest.TestCase):16 def test_image_types(self):17 self.assertRaises(RuntimeError, tkinter.image_types)18 root = tkinter.Tk()19 image_types = tkinter.image_types()20 self.assertIsInstance(image_types, tuple)21 self.assertIn('photo', image_types)22 self.assertIn('bitmap', image_types)23 root.destroy()24 tkinter.NoDefaultRoot()25 self.assertRaises(RuntimeError, tkinter.image_types)26 def test_image_names(self):27 self.assertRaises(RuntimeError, tkinter.image_names)28 root = tkinter.Tk()29 image_names = tkinter.image_names()30 self.assertIsInstance(image_names, tuple)31 root.destroy()32 tkinter.NoDefaultRoot()33 self.assertRaises(RuntimeError, tkinter.image_names)34 def test_image_create_bitmap(self):35 self.assertRaises(RuntimeError, tkinter.BitmapImage)36 root = tkinter.Tk()37 image = tkinter.BitmapImage()38 self.assertIn(image.name, tkinter.image_names())39 root.destroy()40 tkinter.NoDefaultRoot()41 self.assertRaises(RuntimeError, tkinter.BitmapImage)42 def test_image_create_photo(self):43 self.assertRaises(RuntimeError, tkinter.PhotoImage)44 root = tkinter.Tk()45 image = tkinter.PhotoImage()46 self.assertIn(image.name, tkinter.image_names())47 root.destroy()48 tkinter.NoDefaultRoot()49 self.assertRaises(RuntimeError, tkinter.PhotoImage)50class BitmapImageTest(AbstractTkTest, unittest.TestCase):51 @classmethod52 def setUpClass(cls):53 AbstractTkTest.setUpClass.__func__(cls)54 cls.testfile = support.findfile('python.xbm', subdir='imghdrdata')55 def test_create_from_file(self):56 image = tkinter.BitmapImage('::img::test', master=self.root,57 foreground='yellow', background='blue',58 file=self.testfile)59 self.assertEqual(str(image), '::img::test')60 self.assertEqual(image.type(), 'bitmap')61 self.assertEqual(image.width(), 16)62 self.assertEqual(image.height(), 16)63 self.assertIn('::img::test', self.root.image_names())64 del image65 self.assertNotIn('::img::test', self.root.image_names())66 def test_create_from_data(self):67 with open(self.testfile, 'rb') as f:68 data = f.read()69 image = tkinter.BitmapImage('::img::test', master=self.root,70 foreground='yellow', background='blue',71 data=data)72 self.assertEqual(str(image), '::img::test')73 self.assertEqual(image.type(), 'bitmap')74 self.assertEqual(image.width(), 16)75 self.assertEqual(image.height(), 16)76 self.assertIn('::img::test', self.root.image_names())77 del image78 self.assertNotIn('::img::test', self.root.image_names())79 def assertEqualStrList(self, actual, expected):80 self.assertIsInstance(actual, str)81 self.assertEqual(self.root.splitlist(actual), expected)82 def test_configure_data(self):83 image = tkinter.BitmapImage('::img::test', master=self.root)84 self.assertEqual(image['data'], '-data {} {} {} {}')85 with open(self.testfile, 'rb') as f:86 data = f.read()87 image.configure(data=data)88 self.assertEqualStrList(image['data'],89 ('-data', '', '', '', data.decode('ascii')))90 self.assertEqual(image.width(), 16)91 self.assertEqual(image.height(), 16)92 self.assertEqual(image['maskdata'], '-maskdata {} {} {} {}')93 image.configure(maskdata=data)94 self.assertEqualStrList(image['maskdata'],95 ('-maskdata', '', '', '', data.decode('ascii')))96 def test_configure_file(self):97 image = tkinter.BitmapImage('::img::test', master=self.root)98 self.assertEqual(image['file'], '-file {} {} {} {}')99 image.configure(file=self.testfile)100 self.assertEqualStrList(image['file'],101 ('-file', '', '', '',self.testfile))102 self.assertEqual(image.width(), 16)103 self.assertEqual(image.height(), 16)104 self.assertEqual(image['maskfile'], '-maskfile {} {} {} {}')105 image.configure(maskfile=self.testfile)106 self.assertEqualStrList(image['maskfile'],107 ('-maskfile', '', '', '', self.testfile))108 def test_configure_background(self):109 image = tkinter.BitmapImage('::img::test', master=self.root)110 self.assertEqual(image['background'], '-background {} {} {} {}')111 image.configure(background='blue')112 self.assertEqual(image['background'], '-background {} {} {} blue')113 def test_configure_foreground(self):114 image = tkinter.BitmapImage('::img::test', master=self.root)115 self.assertEqual(image['foreground'],116 '-foreground {} {} #000000 #000000')117 image.configure(foreground='yellow')118 self.assertEqual(image['foreground'],119 '-foreground {} {} #000000 yellow')120class PhotoImageTest(AbstractTkTest, unittest.TestCase):121 @classmethod122 def setUpClass(cls):123 AbstractTkTest.setUpClass.__func__(cls)124 cls.testfile = support.findfile('python.gif', subdir='imghdrdata')125 def create(self):126 return tkinter.PhotoImage('::img::test', master=self.root,127 file=self.testfile)128 def colorlist(self, *args):129 if tkinter.TkVersion >= 8.6 and self.wantobjects:130 return args131 else:132 return tkinter._join(args)133 def check_create_from_file(self, ext):134 testfile = support.findfile('python.' + ext, subdir='imghdrdata')135 image = tkinter.PhotoImage('::img::test', master=self.root,136 file=testfile)137 self.assertEqual(str(image), '::img::test')138 self.assertEqual(image.type(), 'photo')139 self.assertEqual(image.width(), 16)140 self.assertEqual(image.height(), 16)141 self.assertEqual(image['data'], '')142 self.assertEqual(image['file'], testfile)143 self.assertIn('::img::test', self.root.image_names())144 del image145 self.assertNotIn('::img::test', self.root.image_names())146 def check_create_from_data(self, ext):147 testfile = support.findfile('python.' + ext, subdir='imghdrdata')148 with open(testfile, 'rb') as f:149 data = f.read()150 image = tkinter.PhotoImage('::img::test', master=self.root,151 data=data)152 self.assertEqual(str(image), '::img::test')153 self.assertEqual(image.type(), 'photo')154 self.assertEqual(image.width(), 16)155 self.assertEqual(image.height(), 16)156 self.assertEqual(image['data'], data if self.wantobjects157 else data.decode('latin1'))158 self.assertEqual(image['file'], '')159 self.assertIn('::img::test', self.root.image_names())160 del image161 self.assertNotIn('::img::test', self.root.image_names())162 def test_create_from_ppm_file(self):163 self.check_create_from_file('ppm')164 def test_create_from_ppm_data(self):165 self.check_create_from_data('ppm')166 def test_create_from_pgm_file(self):167 self.check_create_from_file('pgm')168 def test_create_from_pgm_data(self):169 self.check_create_from_data('pgm')170 def test_create_from_gif_file(self):171 self.check_create_from_file('gif')172 def test_create_from_gif_data(self):173 self.check_create_from_data('gif')174 @requires_tcl(8, 6)175 def test_create_from_png_file(self):176 self.check_create_from_file('png')177 @requires_tcl(8, 6)178 def test_create_from_png_data(self):179 self.check_create_from_data('png')180 def test_configure_data(self):181 image = tkinter.PhotoImage('::img::test', master=self.root)182 self.assertEqual(image['data'], '')183 with open(self.testfile, 'rb') as f:184 data = f.read()185 image.configure(data=data)186 self.assertEqual(image['data'], data if self.wantobjects187 else data.decode('latin1'))188 self.assertEqual(image.width(), 16)189 self.assertEqual(image.height(), 16)190 def test_configure_format(self):191 image = tkinter.PhotoImage('::img::test', master=self.root)192 self.assertEqual(image['format'], '')193 image.configure(file=self.testfile, format='gif')194 self.assertEqual(image['format'], ('gif',) if self.wantobjects195 else 'gif')196 self.assertEqual(image.width(), 16)197 self.assertEqual(image.height(), 16)198 def test_configure_file(self):199 image = tkinter.PhotoImage('::img::test', master=self.root)200 self.assertEqual(image['file'], '')201 image.configure(file=self.testfile)202 self.assertEqual(image['file'], self.testfile)203 self.assertEqual(image.width(), 16)204 self.assertEqual(image.height(), 16)205 def test_configure_gamma(self):206 image = tkinter.PhotoImage('::img::test', master=self.root)207 self.assertEqual(image['gamma'], '1.0')208 image.configure(gamma=2.0)209 self.assertEqual(image['gamma'], '2.0')210 def test_configure_width_height(self):211 image = tkinter.PhotoImage('::img::test', master=self.root)212 self.assertEqual(image['width'], '0')213 self.assertEqual(image['height'], '0')214 image.configure(width=20)215 image.configure(height=10)216 self.assertEqual(image['width'], '20')217 self.assertEqual(image['height'], '10')218 self.assertEqual(image.width(), 20)219 self.assertEqual(image.height(), 10)220 def test_configure_palette(self):221 image = tkinter.PhotoImage('::img::test', master=self.root)222 self.assertEqual(image['palette'], '')223 image.configure(palette=256)224 self.assertEqual(image['palette'], '256')225 image.configure(palette='3/​4/​2')226 self.assertEqual(image['palette'], '3/​4/​2')227 def test_blank(self):228 image = self.create()229 image.blank()230 self.assertEqual(image.width(), 16)231 self.assertEqual(image.height(), 16)232 self.assertEqual(image.get(4, 6), self.colorlist(0, 0, 0))233 def test_copy(self):234 image = self.create()235 image2 = image.copy()236 self.assertEqual(image2.width(), 16)237 self.assertEqual(image2.height(), 16)238 self.assertEqual(image.get(4, 6), image.get(4, 6))239 def test_subsample(self):240 image = self.create()241 image2 = image.subsample(2, 3)242 self.assertEqual(image2.width(), 8)243 self.assertEqual(image2.height(), 6)244 self.assertEqual(image2.get(2, 2), image.get(4, 6))245 image2 = image.subsample(2)246 self.assertEqual(image2.width(), 8)247 self.assertEqual(image2.height(), 8)248 self.assertEqual(image2.get(2, 3), image.get(4, 6))249 def test_zoom(self):250 image = self.create()251 image2 = image.zoom(2, 3)252 self.assertEqual(image2.width(), 32)253 self.assertEqual(image2.height(), 48)254 self.assertEqual(image2.get(8, 18), image.get(4, 6))255 self.assertEqual(image2.get(9, 20), image.get(4, 6))256 image2 = image.zoom(2)257 self.assertEqual(image2.width(), 32)258 self.assertEqual(image2.height(), 32)259 self.assertEqual(image2.get(8, 12), image.get(4, 6))260 self.assertEqual(image2.get(9, 13), image.get(4, 6))261 def test_put(self):262 image = self.create()263 image.put('{red green} {blue yellow}', to=(4, 6))264 self.assertEqual(image.get(4, 6), self.colorlist(255, 0, 0))265 self.assertEqual(image.get(5, 6),266 self.colorlist(0, 128 if tkinter.TkVersion >= 8.6267 else 255, 0))268 self.assertEqual(image.get(4, 7), self.colorlist(0, 0, 255))269 self.assertEqual(image.get(5, 7), self.colorlist(255, 255, 0))270 image.put((('#f00', '#00ff00'), ('#000000fff', '#ffffffff0000')))271 self.assertEqual(image.get(0, 0), self.colorlist(255, 0, 0))272 self.assertEqual(image.get(1, 0), self.colorlist(0, 255, 0))273 self.assertEqual(image.get(0, 1), self.colorlist(0, 0, 255))274 self.assertEqual(image.get(1, 1), self.colorlist(255, 255, 0))275 def test_get(self):276 image = self.create()277 self.assertEqual(image.get(4, 6), self.colorlist(62, 116, 162))278 self.assertEqual(image.get(0, 0), self.colorlist(0, 0, 0))279 self.assertEqual(image.get(15, 15), self.colorlist(0, 0, 0))280 self.assertRaises(tkinter.TclError, image.get, -1, 0)281 self.assertRaises(tkinter.TclError, image.get, 0, -1)282 self.assertRaises(tkinter.TclError, image.get, 16, 15)283 self.assertRaises(tkinter.TclError, image.get, 15, 16)284 def test_write(self):285 image = self.create()286 self.addCleanup(support.unlink, support.TESTFN)287 image.write(support.TESTFN)288 image2 = tkinter.PhotoImage('::img::test2', master=self.root,289 format='ppm',290 file=support.TESTFN)291 self.assertEqual(str(image2), '::img::test2')292 self.assertEqual(image2.type(), 'photo')293 self.assertEqual(image2.width(), 16)294 self.assertEqual(image2.height(), 16)295 self.assertEqual(image2.get(0, 0), image.get(0, 0))296 self.assertEqual(image2.get(15, 8), image.get(15, 8))297 image.write(support.TESTFN, format='gif', from_coords=(4, 6, 6, 9))298 image3 = tkinter.PhotoImage('::img::test3', master=self.root,299 format='gif',300 file=support.TESTFN)301 self.assertEqual(str(image3), '::img::test3')302 self.assertEqual(image3.type(), 'photo')303 self.assertEqual(image3.width(), 2)304 self.assertEqual(image3.height(), 3)305 self.assertEqual(image3.get(0, 0), image.get(4, 6))306 self.assertEqual(image3.get(1, 2), image.get(5, 8))307 def test_transparency(self):308 image = self.create()309 self.assertEqual(image.transparency_get(0, 0), True)310 self.assertEqual(image.transparency_get(4, 6), False)311 image.transparency_set(4, 6, True)312 self.assertEqual(image.transparency_get(4, 6), True)313 image.transparency_set(4, 6, False)314 self.assertEqual(image.transparency_get(4, 6), False)315tests_gui = (MiscTest, DefaultRootTest, BitmapImageTest, PhotoImageTest,)316if __name__ == "__main__":...

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ImageDiffSpec.js

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1var2 /​/​TODO can roll isNode up into a function if checks get longer3 isNode = typeof module !== 'undefined',4 Canvas = isNode && require('canvas'),5 imagediff = imagediff || require('../​js/​imagediff.js');6describe('ImageUtils', function() {7 var8 OBJECT = 'object',9 TYPE_CANVAS = isNode ? '[object Canvas]' : '[object HTMLCanvasElement]',10 E_TYPE = { name : 'ImageTypeError', message : 'Submitted object was not an image.' };11 function getContext () {12 var13 canvas = imagediff.createCanvas(),14 context = canvas.getContext('2d');15 return context;16 }17 function newImage () {18 return isNode ? new Canvas.Image() : new Image();19 }20 function toImageDiffEqual (expected) {21 var22 expectedData = expected.data,23 actualData = this.actual.data;24 this.message = function () {25 var26 length = Math.min(expectedData.length, actualData.length),27 examples = '',28 count = 0,29 i;30 for (i = 0; i < length; i++) {31 if (expectedData[i] !== actualData[i]) {32 count++;33 if (count < 10) {34 examples += (examples ? ', ' : '') + 'Expected '+expectedData[i]+' to equal '+actualData[i]+' at '+i;35 }36 }37 }38 return 'Differed in ' + count + ' places. ' + examples;39 }40 return imagediff.equal(this.actual, expected);41 }42 /​/​ Creation Testing43 describe('Creation', function () {44 it('should create a canvas', function () {45 var46 canvas = imagediff.createCanvas();47 expect(typeof canvas).toEqual(OBJECT);48 expect(Object.prototype.toString.apply(canvas)).toEqual(TYPE_CANVAS);49 });50 it('should create a canvas with dimensions', function () {51 var52 canvas = imagediff.createCanvas(10, 20);53 expect(typeof canvas).toEqual(OBJECT);54 expect(Object.prototype.toString.apply(canvas)).toEqual(TYPE_CANVAS);55 expect(canvas.width).toEqual(10);56 expect(canvas.height).toEqual(20);57 });58 it('should create an imagedata object', function () {59 var60 imageData = imagediff.createImageData(10, 10);61 expect(typeof imageData).toEqual(OBJECT);62 expect(imageData.width).toBeDefined();63 expect(imageData.height).toBeDefined();64 expect(imageData.data).toBeDefined();65 });66 });67 /​/​ Types Testing68 describe('Types', function () {69 /​/​ Checking70 describe('Checking', function () {71 var72 image = newImage(),73 canvas = imagediff.createCanvas(),74 context = canvas.getContext('2d'),75 imageData = context.createImageData(30, 30);76 function testType (type, object) {77 return function () {78 expect(imagediff[type](null)).toEqual(false);79 expect(imagediff[type]('')).toEqual(false);80 expect(imagediff[type]({})).toEqual(false);81 expect(imagediff[type](object)).toEqual(true);82 };83 }84 it('should check Image type', testType('isImage', image));85 it('should check Canvas type', testType('isCanvas', canvas));86 it('should check 2DContext type', testType('isContext', context));87 it('should check ImageData type', testType('isImageData', imageData));88 it('should check for any of the image types', function () {89 expect(imagediff.isImageType(null)).toEqual(false);90 expect(imagediff.isImageType('')).toEqual(false);91 expect(imagediff.isImageType({})).toEqual(false);92 expect(imagediff.isImageType(image)).toEqual(true);93 expect(imagediff.isImageType(canvas)).toEqual(true);94 expect(imagediff.isImageType(context)).toEqual(true);95 expect(imagediff.isImageType(imageData)).toEqual(true);96 });97 });98 /​/​ Conversion99 describe('Conversion', function () {100 var101 image = newImage(),102 imageData;103 beforeEach(function () {104 this.addMatchers({105 toBeImageData : function () {106 return imagediff.isImageData(this.actual);107 },108 toImageDiffEqual : toImageDiffEqual109 });110 });111 it('should convert Image to ImageData', function () {112 var113 result;114 image.src = 'images/​checkmark.png';115 waitsFor(function () {116 return image.complete;117 }, 'image not loaded.', 1000);118 runs(function () {119 var120 canvas = imagediff.createCanvas(image.width, image.height),121 context = canvas.getContext('2d');122 context.drawImage(image, 0, 0);123 imageData = context.getImageData(0, 0, image.width, image.height);124 result = imagediff.toImageData(image);125 expect(result).toBeImageData();126 expect(result).toImageDiffEqual(imageData);127 });128 });129 it('should convert Canvas to ImageData', function () {130 var131 canvas = imagediff.createCanvas(),132 context = canvas.getContext('2d'),133 result;134 canvas.height = image.height;135 canvas.width = image.width;136 context.drawImage(image, 0, 0);137 result = imagediff.toImageData(canvas);138 expect(result).toBeImageData();139 expect(result).toImageDiffEqual(imageData);140 });141 it('should convert Context to ImageData', function () {142 var143 canvas = imagediff.createCanvas(),144 context = canvas.getContext('2d'),145 result = imagediff.toImageData(context);146 expect(result).toBeImageData();147 });148 it('should copy ImageData to new ImageData', function () {149 result = imagediff.toImageData(imageData);150 expect(result).toBeImageData();151 expect(result).toImageDiffEqual(imageData);152 expect(imageData !== result).toBeTruthy();153 });154 it('should fail on non-ImageType', function () {155 expect(function () { imagediff.toImageData() }).toThrow(E_TYPE);156 expect(function () { imagediff.toImageData('') }).toThrow(E_TYPE);157 expect(function () { imagediff.toImageData({}) }).toThrow(E_TYPE);158 });159 });160 });161 /​/​ Equals Testing162 describe('Equals', function () {163 var context, a, b;164 beforeEach(function () {165 context = getContext();166 a = context.createImageData(2, 2);167 });168 it('should not be equal for equal ImageData', function () {169 b = context.createImageData(2, 2);170 expect(imagediff.equal(a, b)).toEqual(true);171 });172 it('should not be equal when one ImageData is of different width', function () {173 b = context.createImageData(3, 2);174 expect(imagediff.equal(a, b)).toEqual(false);175 expect(imagediff.equal(b, a)).toEqual(false);176 });177 it('should not be equal when one ImageData is of different height', function () {178 b = context.createImageData(2, 3);179 expect(imagediff.equal(a, b)).toEqual(false);180 expect(imagediff.equal(b, a)).toEqual(false);181 });182 it('should not be equal when one ImageData data array differs', function () {183 b = context.createImageData(2, 2);184 b.data[0] = 100;185 expect(imagediff.equal(a, b)).toEqual(false);186 });187 it('should be equal within optional tolerance', function () {188 b = context.createImageData(2, 2);189 b.data[0] = 100;190 expect(imagediff.equal(a, b, 101)).toEqual(true);191 });192 it('should be equal optional tolerance', function () {193 b = context.createImageData(2, 2);194 b.data[0] = 100;195 expect(imagediff.equal(a, b, 100)).toEqual(true);196 });197 it('should not be equal outside tolerance', function () {198 b = context.createImageData(2, 2);199 b.data[0] = 100;200 expect(imagediff.equal(a, b, 5)).toEqual(false);201 });202 });203 /​/​ Diff Testing204 describe('Diff', function () {205 var a, b, c, d;206 beforeEach(function () {207 this.addMatchers({208 toImageDiffEqual : toImageDiffEqual209 });210 });211 describe('Geometry', function () {212 it('should be square, 1x1', function () {213 a = imagediff.createImageData(1, 1),214 b = imagediff.createImageData(1, 1),215 c = imagediff.diff(a, b);216 expect(c.width).toEqual(1);217 expect(c.height).toEqual(1);218 });219 it('should be square, 2x2', function () {220 a = imagediff.createImageData(1, 2),221 b = imagediff.createImageData(2, 1),222 c = imagediff.diff(a, b);223 expect(c.width).toEqual(2);224 expect(c.height).toEqual(2);225 });226 it('should be rectangular, 1x2', function () {227 a = imagediff.createImageData(1, 2),228 b = imagediff.createImageData(1, 1),229 c = imagediff.diff(a, b);230 expect(c.width).toEqual(1);231 expect(c.height).toEqual(2);232 });233 it('should be rectangular, 2x1', function () {234 a = imagediff.createImageData(2, 1),235 b = imagediff.createImageData(1, 1),236 c = imagediff.diff(a, b);237 expect(c.width).toEqual(2);238 expect(c.height).toEqual(1);239 });240 });241 describe('Difference', function () {242 it('should be black', function () {243 a = imagediff.createImageData(1, 1),244 b = imagediff.createImageData(1, 1),245 c = imagediff.diff(a, b);246 d = imagediff.createImageData(1, 1);247 d.data[3] = 255;248 expect(c).toImageDiffEqual(d);249 });250 it('should calculate difference', function () {251 a = imagediff.createImageData(1, 1),252 a.data[1] = 200;253 b = imagediff.createImageData(1, 1),254 b.data[1] = 158;255 c = imagediff.diff(a, b);256 d = imagediff.createImageData(1, 1);257 d.data[1] = 42;258 d.data[3] = 255;259 expect(c).toImageDiffEqual(d);260 });261 it('should center images of unequal size', function () {262 a = imagediff.createImageData(3, 3),263 b = imagediff.createImageData(1, 1),264 b.data[1] = 21;265 c = imagediff.diff(a, b);266 d = imagediff.createImageData(3, 3);267 /​/​ 4 * (rowPos * imageWidth + columnPos) + rgbPos268 d.data[4 * (1 * 3 + 1) + 1] = 21;269 /​/​ set alpha270 Array.prototype.forEach.call(d.data, function (value, i) {271 if (i % 4 === 3) {272 d.data[i] = 255;273 }274 });275 expect(c).toImageDiffEqual(d);276 });277 it('should optionally align images top left for unequal size', function () {278 a = imagediff.createImageData(3, 3),279 b = imagediff.createImageData(1, 1),280 b.data[1] = 21;281 c = imagediff.diff(a, b, {align: 'top'});282 d = imagediff.createImageData(3, 3);283 d.data[1] = 21;284 /​/​ set alpha285 Array.prototype.forEach.call(d.data, function (value, i) {286 if (i % 4 === 3) {287 d.data[i] = 255;288 }289 });290 expect(c).toImageDiffEqual(d);291 });292 });293 /​*294 var295 a = imagediff.createImageData(1, 3),296 b = imagediff.createImageData(3, 1),297 c, d;298 a.data[0] = 255;299 a.data[3] = 255;300 a.data[4] = 255;301 a.data[7] = 255;302 a.data[8] = 255;303 a.data[11] = 255;304 b.data[0] = 255;305 b.data[3] = 255;306 b.data[4] = 255;307 b.data[7] = 255;308 b.data[8] = 255;309 b.data[11] = 255;310 */​311 });312 /​/​ Jasmine Matcher Testing313 describe("jasmine.Matchers", function() {314 var315 imageA = newImage(),316 imageB = newImage(),317 imageC = newImage(),318 env, spec;319 imageA.src = 'images/​xmark.png';320 imageB.src = 'images/​xmark.png';321 imageC.src = 'images/​checkmark.png';322 beforeEach(function() {323 env = new jasmine.Env();324 env.updateInterval = 0;325 var suite = env.describe("suite", function() {326 spec = env.it("spec", function() {327 });328 });329 spyOn(spec, 'addMatcherResult');330 spec.addMatchers(imagediff.jasmine);331 this.addMatchers({332 toPass: function() {333 return lastResult().passed();334 },335 toFail: function() {336 return !lastResult().passed();337 }338 });339 });340 function match(value) {341 return spec.expect(value);342 }343 function lastResult() {344 return spec.addMatcherResult.mostRecentCall.args[0];345 }346 it('toBeImageData', function () {347 var a = imagediff.createImageData(1, 1),348 b = {};349 expect(match(a).toBeImageData()).toPass();350 expect(match(b).toBeImageData()).toFail();351 });352 it('toImageDiffEqual with images', function () {353 waitsFor(function () {354 return imageA.complete && imageB.complete && imageC.complete;355 }, 'image not loaded.', 2000);356 runs(function () {357 expect(match(imageA).toImageDiffEqual(imageB)).toPass();358 expect(match(imageA).toImageDiffEqual(imageC)).toFail();359 expect(function () {360 match(imageA).toImageDiffEqual({});361 }).toThrow(E_TYPE);362 });363 });364 it('toImageDiffEqual with contexts (not a DOM element)', function () {365 var366 a = imagediff.createCanvas(imageA.width, imageA.height).getContext('2d'),367 b = imagediff.createCanvas(imageB.width, imageB.height).getContext('2d'),368 c = imagediff.createCanvas(imageC.width, imageC.height).getContext('2d');369 a.drawImage(imageA, 0, 0);370 b.drawImage(imageB, 0, 0);371 c.drawImage(imageC, 0, 0);372 expect(match(a).toImageDiffEqual(b)).toPass();373 expect(match(a).toImageDiffEqual(c)).toFail();374 expect(function () {375 match(a).toImageDiffEqual({});376 }).toThrow(E_TYPE);377 });378 });379 /​/​ Image Output380 describe('Image Output', function () {381 if (!isNode) { return; }382 var383 output = 'images/​spec_output.png';384 beforeEach(function () {385 this.addMatchers(imagediff.jasmine)386 });387 afterEach(function () {388 require('fs').unlink(output);389 });390 it('saves an image as a PNG', function () {391 var392 image = newImage(),393 canvas = imagediff.createCanvas(10, 10),394 context = canvas.getContext('2d'),395 a, b;396 context.moveTo(0, 0);397 context.lineTo(10, 10);398 context.strokeStyle = 'rgba(150, 150, 150, .5)';399 context.stroke();400 a = context.getImageData(0, 0, 10, 10);401 imagediff.imageDataToPNG(a, output, function () {402 image.src = output;403 });404 waitsFor(function () {405 return image.complete;406 }, 'image not loaded.', 2000);407 runs(function () {408 b = imagediff.toImageData(image);409 expect(b).toBeImageData();410 expect(canvas).toImageDiffEqual(b, 10);411 });412 });413 });414 /​/​ Compatibility Testing415 describe('Compatibility', function () {416 var417 fn = Function,418 global = (fn('return this;')()), /​/​ Get the global object419 that = imagediff,420 reference;421 afterEach(function () {422 global.imagediff = that;423 });424 it('should remove imagediff from global space', function () {425 imagediff.noConflict();426 if (!isNode) {427 expect(imagediff === that).toEqual(false);428 expect(global.imagediff === that).toEqual(false);429 }430 });431 it('should return imagediff', function () {432 reference = imagediff.noConflict();433 expect(reference === that).toEqual(true);434 });435 });...

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