70 lines
2.1 KiB
JavaScript
70 lines
2.1 KiB
JavaScript
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/*
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* Used to collect test failures in a file. Use by specifying --file to Mocha.
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*
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* See https://mochajs.org/#command-line-usage
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*/
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const path = require('path');
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const projectRoot = path.normalize(path.join(__dirname, '..'));
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const outputLog = path.join(projectRoot, '.test-failures.log');
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const red = function(string) {
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return `\x1b[31m${string}\x1b[0m`;
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};
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const green = function(string) {
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return `\x1b[32m${string}\x1b[0m`;
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};
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const dim = function(string) {
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return `\x1b[2m${string}\x1b[0m`;
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};
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// Mapping of test file name to array of failing tests.
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const failuresPerFile = {};
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afterEach(function () {
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if (this.currentTest.state === "failed") {
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failuresPerFile[this.currentTest.file] = failuresPerFile[this.currentTest.file] || [];
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failuresPerFile[this.currentTest.file].push(this.currentTest);
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}
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});
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after(function () {
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if (Object.keys(failuresPerFile).length === 0) return;
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const fs = require('fs')
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const logger = fs.createWriteStream(outputLog, { flags: 'a' });
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const writeLine = (line) => logger.write(`${line}\n`);
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for (let file in failuresPerFile) {
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const failures = failuresPerFile[file];
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// Remove project root from file path to keep log lines shorter.
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if (file.startsWith(projectRoot)) {
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file = file.substr(projectRoot.length + 1, file.length - projectRoot.length - 1)
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}
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// Print each failure.
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failures.forEach(function (failure, i) {
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const stack = failure.err.stack.split('\n');
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writeLine(`${file}: ${i + 1}\) ${failure.title}:`);
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writeLine(`${file}:`);
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writeLine(`${file}: ${red(stack[0].trim())}`);
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writeLine(`${file}: ${green('+ expected')} ${red('- actual')}`);
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writeLine(`${file}:`);
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writeLine(`${file}: ${red("-" + failure.err.actual)}`);
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writeLine(`${file}: ${green("+" + failure.err.expected)}`);
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writeLine(`${file}:`);
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stack.slice(1).forEach(function (stackLine) {
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writeLine(`${file}: ${dim(stackLine.trim())}`);
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});
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if (i < failures.length - 1) {
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writeLine(`${file}:`);
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}
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});
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}
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logger.end();
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});
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