wisemapping-frontend/packages/mindplot/test/unit/export/Helper.ts

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2022-01-02 19:37:33 +01:00
/*
* Copyright [2021] [wisemapping]
*
* Licensed under WiseMapping Public License, Version 1.0 (the "License").
* It is basically the Apache License, Version 2.0 (the "License") plus the
* "powered by wisemapping" text requirement on every single page;
* you may not use this file except in compliance with the License.
* You may obtain a copy of the license at
*
* http://www.wisemapping.org/license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { Blob } from 'blob-polyfill';
import Exporter from '../../../src/components/export/Exporter';
import path from 'path';
import fs from 'fs';
import { diff } from 'jest-diff';
import { expect } from '@jest/globals';
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const saveOutputRecord = true;
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export const setupBlob = () => {
// Workaround for partial implementations on Jest:
// 1) Blob is not supported by jest (https://stackoverflow.com/questions/69135061/jest-test-creates-empty-blob-object
globalThis.Blob = Blob;
// 2) URL partially supported ...
if (typeof window.URL.createObjectURL === 'undefined') {
Object.defineProperty(window.URL, 'createObjectURL', { value: (param: Blob) => param.text() });
}
};
export const parseXMLFile = (filePath: fs.PathOrFileDescriptor, mimeType: DOMParserSupportedType) => {
const stream = fs.readFileSync(filePath, { encoding: 'utf-8' });
let content = stream.toString();
// Hack for SVG exported from the browser ...
if(mimeType=="image/svg+xml"){
content = content.replace('<svg ', '<svg xmlns:xlink="http://www.w3.org/1999/xlink" ')
}
return parseXMLString(content, mimeType);
}
export const parseXMLString = (xmlStr: string, mimeType: DOMParserSupportedType) => {
const parser = new DOMParser();
const xmlDoc = parser.parseFromString(xmlStr, mimeType);
// Is there any parsing error ?.
if (xmlDoc.getElementsByTagName("parsererror").length > 0) {
const xmmStr = new XMLSerializer().serializeToString(xmlDoc);
console.log(xmmStr);
throw new Error(`Unexpected error parsing: ${xmlStr}. Error: ${xmmStr}`);
}
return xmlDoc;
}
export const exporterAssert = async (testName: string, exporter: Exporter) => {
const actualStr = await exporter.export();
//Compared with expected ...
const expectedPath = path.resolve(__dirname, `./expected/${testName}.${exporter.extension()}`);
if (saveOutputRecord) {
fs.writeFileSync(expectedPath, actualStr);
}
// compare with expected ...
const expectedStr = fs.readFileSync(expectedPath).toString();
if (actualStr !== expectedStr) {
const diffResult = diff(actualStr, expectedStr);
console.log(diffResult);
expect(actualStr).toEqual(expectedStr);
}
}