testcafe
Version:
Automated browser testing for the modern web development stack.
105 lines • 14.7 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const utils_1 = require("./utils");
const limit_number_1 = __importDefault(require("../utils/limit-number"));
const render_template_1 = __importDefault(require("../utils/render-template"));
const test_run_1 = require("../errors/test-run/");
const constants_1 = require("./constants");
const warning_message_1 = __importDefault(require("../notifications/warning-message"));
const MARK_SEED_ERROR_THRESHOLD = 10;
const WHITE_COLOR_PART = 255;
const BLACK_COLOR_PART = 0;
function markSeedToId(markSeed) {
let id = 0;
for (let i = 0; i < constants_1.MARK_LENGTH; i++)
id = id * 2 + (markSeed[i * constants_1.MARK_BYTES_PER_PIXEL] ? 1 : 0);
return id;
}
function getCorrectedColorPart(colorPart) {
const isWhite = colorPart > WHITE_COLOR_PART - MARK_SEED_ERROR_THRESHOLD;
const isBlack = colorPart < MARK_SEED_ERROR_THRESHOLD;
if (isBlack)
return BLACK_COLOR_PART;
if (isWhite)
return WHITE_COLOR_PART;
return colorPart;
}
function calculateMarkPosition(pngImage, markSeed) {
const mark = Buffer.from(markSeed);
const filtImg = Buffer.from(pngImage.data);
for (let i = 0; i < filtImg.length; i++)
filtImg[i] = getCorrectedColorPart(filtImg[i]);
const markIndex = filtImg.indexOf(mark);
if (markIndex < 0)
return null;
const endPosition = markIndex / constants_1.MARK_BYTES_PER_PIXEL + constants_1.MARK_LENGTH + constants_1.MARK_RIGHT_MARGIN;
const x = endPosition % pngImage.width || pngImage.width;
const y = (endPosition - x) / pngImage.width + 1;
return { x, y };
}
exports.calculateMarkPosition = calculateMarkPosition;
function getClipInfoByMarkPosition(markPosition, { width, height }) {
const { x, y } = markPosition;
const clipRight = x;
const clipBottom = y;
const clipLeft = clipRight - width;
const clipTop = clipBottom - height;
return {
clipLeft,
clipTop,
clipRight,
clipBottom
};
}
exports.getClipInfoByMarkPosition = getClipInfoByMarkPosition;
function getClipInfoByCropDimensions({ clipRight, clipLeft, clipBottom, clipTop }, cropDimensions) {
if (cropDimensions) {
const { right, top, bottom, left } = cropDimensions;
clipRight = limit_number_1.default(clipLeft + right, clipLeft, clipRight);
clipBottom = limit_number_1.default(clipTop + bottom, clipTop, clipBottom);
clipLeft = limit_number_1.default(clipLeft + left, clipLeft, clipRight);
clipTop = limit_number_1.default(clipTop + top, clipTop, clipBottom);
}
return {
clipLeft,
clipTop,
clipRight,
clipBottom
};
}
exports.getClipInfoByCropDimensions = getClipInfoByCropDimensions;
function calculateClipInfo(pngImage, path, markSeed, clientAreaDimensions, cropDimensions) {
let clipInfo = {
clipRight: pngImage.width,
clipBottom: pngImage.height,
clipLeft: 0,
clipTop: 0
};
let markPosition = null;
if (markSeed && clientAreaDimensions) {
markPosition = calculateMarkPosition(pngImage, markSeed);
if (!markPosition)
throw new Error(render_template_1.default(warning_message_1.default.screenshotMarkNotFound, path, markSeedToId(markSeed)));
clipInfo = getClipInfoByMarkPosition(markPosition, clientAreaDimensions);
}
clipInfo = getClipInfoByCropDimensions(clipInfo, cropDimensions);
if (markPosition && markPosition.y === clipInfo.clipBottom)
clipInfo.clipBottom--;
const clipWidth = clipInfo.clipRight - clipInfo.clipLeft;
const clipHeight = clipInfo.clipBottom - clipInfo.clipTop;
if (clipWidth <= 0 || clipHeight <= 0)
throw new test_run_1.InvalidElementScreenshotDimensionsError(clipWidth, clipHeight);
return clipInfo;
}
exports.calculateClipInfo = calculateClipInfo;
async function cropScreenshot(image, { path, markSeed, clientAreaDimensions, cropDimensions }) {
if (!markSeed && !cropDimensions)
return null;
const clip = calculateClipInfo(image, path, markSeed, clientAreaDimensions, cropDimensions);
return utils_1.copyImagePart(image, clip);
}
exports.cropScreenshot = cropScreenshot;
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1 : 0);\n\n    return id;\n}\n\nfunction getCorrectedColorPart (colorPart) {\n    const isWhite = colorPart > WHITE_COLOR_PART - MARK_SEED_ERROR_THRESHOLD;\n    const isBlack = colorPart < MARK_SEED_ERROR_THRESHOLD;\n\n    if (isBlack)\n        return BLACK_COLOR_PART;\n\n    if (isWhite)\n        return WHITE_COLOR_PART;\n\n    return colorPart;\n}\n\nexport function calculateMarkPosition (pngImage, markSeed) {\n    const mark    = Buffer.from(markSeed);\n    const filtImg = Buffer.from(pngImage.data);\n\n    for (let i = 0; i < filtImg.length; i++)\n        filtImg[i] = getCorrectedColorPart(filtImg[i]);\n\n    const markIndex = filtImg.indexOf(mark);\n\n    if (markIndex < 0)\n        return null;\n\n    const endPosition = markIndex / MARK_BYTES_PER_PIXEL + MARK_LENGTH + MARK_RIGHT_MARGIN;\n\n    const x = endPosition % pngImage.width || pngImage.width;\n    const y = (endPosition - x) / pngImage.width + 1;\n\n    return { x, y };\n}\n\nexport function getClipInfoByMarkPosition (markPosition, { width, height }) {\n    const { x, y } = markPosition;\n\n    const clipRight  = x;\n    const clipBottom = y;\n    const clipLeft   = clipRight - width;\n    const clipTop    = clipBottom - height;\n\n    return {\n        clipLeft,\n        clipTop,\n        clipRight,\n        clipBottom\n    };\n}\n\nexport function getClipInfoByCropDimensions ({ clipRight, clipLeft, clipBottom, clipTop }, cropDimensions) {\n    if (cropDimensions) {\n        const { right, top, bottom, left } = cropDimensions;\n\n        clipRight  = limitNumber(clipLeft + right, clipLeft, clipRight);\n        clipBottom = limitNumber(clipTop + bottom, clipTop, clipBottom);\n        clipLeft   = limitNumber(clipLeft + left, clipLeft, clipRight);\n        clipTop    = limitNumber(clipTop + top, clipTop, clipBottom);\n    }\n\n    return {\n        clipLeft,\n        clipTop,\n        clipRight,\n        clipBottom\n    };\n}\n\nexport function calculateClipInfo (pngImage, path, markSeed, clientAreaDimensions, cropDimensions) {\n    let clipInfo = {\n        clipRight:  pngImage.width,\n        clipBottom: pngImage.height,\n        clipLeft:   0,\n        clipTop:    0\n    };\n\n    let markPosition = null;\n\n    if (markSeed && clientAreaDimensions) {\n        markPosition = calculateMarkPosition(pngImage, markSeed);\n\n        if (!markPosition)\n            throw new Error(renderTemplate(WARNING_MESSAGES.screenshotMarkNotFound, path, markSeedToId(markSeed)));\n\n        clipInfo = getClipInfoByMarkPosition(markPosition, clientAreaDimensions);\n    }\n\n    clipInfo = getClipInfoByCropDimensions(clipInfo, cropDimensions);\n\n    if (markPosition && markPosition.y === clipInfo.clipBottom)\n        clipInfo.clipBottom--;\n\n    const clipWidth  = clipInfo.clipRight - clipInfo.clipLeft;\n    const clipHeight = clipInfo.clipBottom - clipInfo.clipTop;\n\n    if (clipWidth <= 0 || clipHeight <= 0)\n        throw new InvalidElementScreenshotDimensionsError(clipWidth, clipHeight);\n\n    return clipInfo;\n}\n\nexport async function cropScreenshot (image, { path, markSeed, clientAreaDimensions, cropDimensions }) {\n    if (!markSeed && !cropDimensions)\n        return null;\n\n    const clip = calculateClipInfo(image, path, markSeed, clientAreaDimensions, cropDimensions);\n\n    return copyImagePart(image, clip);\n}\n"]}