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88 lines
2.8 KiB
JavaScript
88 lines
2.8 KiB
JavaScript
/*---------------------------------------------------------------------------------------------
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License. See License.txt in the project root for license information.
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*--------------------------------------------------------------------------------------------*/
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const minimatch = require('minimatch');
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const fs = require('fs');
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const path = require('path');
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const iLibInstrument = require('istanbul-lib-instrument');
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const iLibCoverage = require('istanbul-lib-coverage');
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const iLibSourceMaps = require('istanbul-lib-source-maps');
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const iLibReport = require('istanbul-lib-report');
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const iReports = require('istanbul-reports');
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const REPO_PATH = toUpperDriveLetter(path.join(__dirname, '../../'));
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exports.initialize = function (loaderConfig) {
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const instrumenter = iLibInstrument.createInstrumenter();
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loaderConfig.nodeInstrumenter = function (contents, source) {
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if (minimatch(source, '**/test/**')) {
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// tests don't get instrumented
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return contents;
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}
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// Try to find a .map file
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let map = undefined;
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try {
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map = JSON.parse(fs.readFileSync(`${source}.map`).toString());
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} catch (err) {
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// missing source map...
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}
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return instrumenter.instrumentSync(contents, source, map);
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};
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};
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exports.createReport = function (isSingle) {
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const mapStore = iLibSourceMaps.createSourceMapStore();
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const coverageMap = iLibCoverage.createCoverageMap(global.__coverage__);
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return mapStore.transformCoverage(coverageMap).then((transformed) => {
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// Paths come out all broken
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let newData = Object.create(null);
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Object.keys(transformed.data).forEach((file) => {
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const entry = transformed.data[file];
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const fixedPath = fixPath(entry.path);
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entry.data.path = fixedPath;
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newData[fixedPath] = entry;
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});
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transformed.data = newData;
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const context = iLibReport.createContext({
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dir: path.join(REPO_PATH, `.build/coverage${isSingle ? '-single' : ''}`),
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coverageMap: transformed
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});
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const tree = context.getTree('flat');
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let reports = [];
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if (isSingle) {
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reports.push(iReports.create('lcovonly'));
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} else {
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reports.push(iReports.create('json'));
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reports.push(iReports.create('lcov'));
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reports.push(iReports.create('html'));
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}
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reports.forEach(report => tree.visit(report, context));
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});
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};
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function toUpperDriveLetter(str) {
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if (/^[a-z]:/.test(str)) {
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return str.charAt(0).toUpperCase() + str.substr(1);
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}
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return str;
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}
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function toLowerDriveLetter(str) {
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if (/^[A-Z]:/.test(str)) {
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return str.charAt(0).toLowerCase() + str.substr(1);
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}
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return str;
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}
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function fixPath(brokenPath) {
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const startIndex = brokenPath.lastIndexOf(REPO_PATH);
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if (startIndex === -1) {
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return toLowerDriveLetter(brokenPath);
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}
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return toLowerDriveLetter(brokenPath.substr(startIndex));
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}
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