487 lines
10 KiB
JavaScript
487 lines
10 KiB
JavaScript
/**
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* Module dependencies.
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*/
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var tty = require('tty');
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var diff = require('diff');
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var ms = require('../ms');
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var utils = require('../utils');
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var supportsColor = process.browser ? null : require('supports-color');
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/**
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* Expose `Base`.
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*/
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exports = module.exports = Base;
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/**
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* Save timer references to avoid Sinon interfering.
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* See: https://github.com/mochajs/mocha/issues/237
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*/
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/* eslint-disable no-unused-vars, no-native-reassign */
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var Date = global.Date;
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var setTimeout = global.setTimeout;
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var setInterval = global.setInterval;
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var clearTimeout = global.clearTimeout;
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var clearInterval = global.clearInterval;
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/* eslint-enable no-unused-vars, no-native-reassign */
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/**
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* Check if both stdio streams are associated with a tty.
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*/
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var isatty = tty.isatty(1) && tty.isatty(2);
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/**
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* Enable coloring by default, except in the browser interface.
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*/
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exports.useColors = !process.browser && (supportsColor || (process.env.MOCHA_COLORS !== undefined));
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/**
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* Inline diffs instead of +/-
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*/
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exports.inlineDiffs = false;
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/**
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* Default color map.
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*/
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exports.colors = {
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pass: 90,
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fail: 31,
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'bright pass': 92,
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'bright fail': 91,
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'bright yellow': 93,
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pending: 36,
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suite: 0,
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'error title': 0,
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'error message': 31,
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'error stack': 90,
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checkmark: 32,
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fast: 90,
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medium: 33,
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slow: 31,
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green: 32,
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light: 90,
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'diff gutter': 90,
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'diff added': 32,
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'diff removed': 31
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};
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/**
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* Default symbol map.
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*/
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exports.symbols = {
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ok: '✓',
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err: '✖',
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dot: '․'
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};
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// With node.js on Windows: use symbols available in terminal default fonts
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if (process.platform === 'win32') {
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exports.symbols.ok = '\u221A';
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exports.symbols.err = '\u00D7';
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exports.symbols.dot = '.';
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}
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/**
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* Color `str` with the given `type`,
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* allowing colors to be disabled,
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* as well as user-defined color
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* schemes.
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*
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* @param {string} type
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* @param {string} str
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* @return {string}
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* @api private
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*/
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var color = exports.color = function(type, str) {
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if (!exports.useColors) {
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return String(str);
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}
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return '\u001b[' + exports.colors[type] + 'm' + str + '\u001b[0m';
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};
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/**
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* Expose term window size, with some defaults for when stderr is not a tty.
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*/
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exports.window = {
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width: 75
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};
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if (isatty) {
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exports.window.width = process.stdout.getWindowSize
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? process.stdout.getWindowSize(1)[0]
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: tty.getWindowSize()[1];
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}
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/**
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* Expose some basic cursor interactions that are common among reporters.
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*/
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exports.cursor = {
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hide: function() {
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isatty && process.stdout.write('\u001b[?25l');
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},
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show: function() {
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isatty && process.stdout.write('\u001b[?25h');
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},
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deleteLine: function() {
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isatty && process.stdout.write('\u001b[2K');
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},
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beginningOfLine: function() {
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isatty && process.stdout.write('\u001b[0G');
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},
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CR: function() {
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if (isatty) {
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exports.cursor.deleteLine();
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exports.cursor.beginningOfLine();
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} else {
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process.stdout.write('\r');
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}
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}
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};
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/**
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* Outut the given `failures` as a list.
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*
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* @param {Array} failures
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* @api public
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*/
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exports.list = function(failures) {
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console.log();
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failures.forEach(function(test, i) {
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// format
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var fmt = color('error title', ' %s) %s:\n')
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+ color('error message', ' %s')
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+ color('error stack', '\n%s\n');
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// msg
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var msg;
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var err = test.err;
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var message;
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if (err.message) {
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message = err.message;
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} else if (typeof err.inspect === 'function') {
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message = err.inspect() + '';
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} else {
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message = '';
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}
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var stack = err.stack || message;
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var index = stack.indexOf(message);
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var actual = err.actual;
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var expected = err.expected;
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var escape = true;
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if (index === -1) {
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msg = message;
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} else {
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index += message.length;
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msg = stack.slice(0, index);
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// remove msg from stack
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stack = stack.slice(index + 1);
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}
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// uncaught
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if (err.uncaught) {
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msg = 'Uncaught ' + msg;
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}
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// explicitly show diff
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if (err.showDiff !== false && sameType(actual, expected) && expected !== undefined) {
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escape = false;
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if (!(utils.isString(actual) && utils.isString(expected))) {
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err.actual = actual = utils.stringify(actual);
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err.expected = expected = utils.stringify(expected);
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}
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fmt = color('error title', ' %s) %s:\n%s') + color('error stack', '\n%s\n');
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var match = message.match(/^([^:]+): expected/);
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msg = '\n ' + color('error message', match ? match[1] : msg);
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if (exports.inlineDiffs) {
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msg += inlineDiff(err, escape);
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} else {
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msg += unifiedDiff(err, escape);
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}
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}
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// indent stack trace
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stack = stack.replace(/^/gm, ' ');
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console.log(fmt, (i + 1), test.fullTitle(), msg, stack);
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});
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};
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/**
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* Initialize a new `Base` reporter.
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*
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* All other reporters generally
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* inherit from this reporter, providing
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* stats such as test duration, number
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* of tests passed / failed etc.
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*
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* @param {Runner} runner
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* @api public
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*/
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function Base(runner) {
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var stats = this.stats = { suites: 0, tests: 0, passes: 0, pending: 0, failures: 0 };
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var failures = this.failures = [];
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if (!runner) {
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return;
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}
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this.runner = runner;
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runner.stats = stats;
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runner.on('start', function() {
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stats.start = new Date();
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});
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runner.on('suite', function(suite) {
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stats.suites = stats.suites || 0;
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suite.root || stats.suites++;
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});
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runner.on('test end', function() {
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stats.tests = stats.tests || 0;
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stats.tests++;
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});
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runner.on('pass', function(test) {
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stats.passes = stats.passes || 0;
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if (test.duration > test.slow()) {
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test.speed = 'slow';
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} else if (test.duration > test.slow() / 2) {
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test.speed = 'medium';
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} else {
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test.speed = 'fast';
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}
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stats.passes++;
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});
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runner.on('fail', function(test, err) {
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stats.failures = stats.failures || 0;
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stats.failures++;
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test.err = err;
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failures.push(test);
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});
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runner.on('end', function() {
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stats.end = new Date();
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stats.duration = new Date() - stats.start;
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});
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runner.on('pending', function() {
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stats.pending++;
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});
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}
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/**
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* Output common epilogue used by many of
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* the bundled reporters.
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*
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* @api public
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*/
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Base.prototype.epilogue = function() {
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var stats = this.stats;
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var fmt;
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console.log();
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// passes
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fmt = color('bright pass', ' ')
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+ color('green', ' %d passing')
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+ color('light', ' (%s)');
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console.log(fmt,
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stats.passes || 0,
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ms(stats.duration));
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// pending
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if (stats.pending) {
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fmt = color('pending', ' ')
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+ color('pending', ' %d pending');
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console.log(fmt, stats.pending);
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}
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// failures
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if (stats.failures) {
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fmt = color('fail', ' %d failing');
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console.log(fmt, stats.failures);
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Base.list(this.failures);
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console.log();
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}
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console.log();
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};
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/**
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* Pad the given `str` to `len`.
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*
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* @api private
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* @param {string} str
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* @param {string} len
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* @return {string}
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*/
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function pad(str, len) {
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str = String(str);
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return Array(len - str.length + 1).join(' ') + str;
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}
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/**
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* Returns an inline diff between 2 strings with coloured ANSI output
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*
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* @api private
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* @param {Error} err with actual/expected
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* @param {boolean} escape
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* @return {string} Diff
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*/
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function inlineDiff(err, escape) {
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var msg = errorDiff(err, 'WordsWithSpace', escape);
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// linenos
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var lines = msg.split('\n');
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if (lines.length > 4) {
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var width = String(lines.length).length;
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msg = lines.map(function(str, i) {
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return pad(++i, width) + ' |' + ' ' + str;
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}).join('\n');
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}
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// legend
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msg = '\n'
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+ color('diff removed', 'actual')
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+ ' '
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+ color('diff added', 'expected')
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+ '\n\n'
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+ msg
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+ '\n';
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// indent
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msg = msg.replace(/^/gm, ' ');
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return msg;
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}
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/**
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* Returns a unified diff between two strings.
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*
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* @api private
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* @param {Error} err with actual/expected
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* @param {boolean} escape
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* @return {string} The diff.
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*/
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function unifiedDiff(err, escape) {
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var indent = ' ';
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function cleanUp(line) {
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if (escape) {
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line = escapeInvisibles(line);
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}
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if (line[0] === '+') {
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return indent + colorLines('diff added', line);
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}
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if (line[0] === '-') {
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return indent + colorLines('diff removed', line);
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}
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if (line.match(/\@\@/)) {
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return null;
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}
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if (line.match(/\\ No newline/)) {
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return null;
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}
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return indent + line;
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}
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function notBlank(line) {
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return typeof line !== 'undefined' && line !== null;
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}
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var msg = diff.createPatch('string', err.actual, err.expected);
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var lines = msg.split('\n').splice(4);
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return '\n '
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+ colorLines('diff added', '+ expected') + ' '
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+ colorLines('diff removed', '- actual')
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+ '\n\n'
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+ lines.map(cleanUp).filter(notBlank).join('\n');
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}
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/**
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* Return a character diff for `err`.
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*
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* @api private
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* @param {Error} err
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* @param {string} type
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* @param {boolean} escape
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* @return {string}
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*/
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function errorDiff(err, type, escape) {
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var actual = escape ? escapeInvisibles(err.actual) : err.actual;
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var expected = escape ? escapeInvisibles(err.expected) : err.expected;
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return diff['diff' + type](actual, expected).map(function(str) {
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if (str.added) {
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return colorLines('diff added', str.value);
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}
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if (str.removed) {
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return colorLines('diff removed', str.value);
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}
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return str.value;
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}).join('');
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}
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/**
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* Returns a string with all invisible characters in plain text
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*
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* @api private
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* @param {string} line
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* @return {string}
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*/
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function escapeInvisibles(line) {
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return line.replace(/\t/g, '<tab>')
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.replace(/\r/g, '<CR>')
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.replace(/\n/g, '<LF>\n');
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}
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/**
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* Color lines for `str`, using the color `name`.
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*
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* @api private
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* @param {string} name
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* @param {string} str
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* @return {string}
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*/
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function colorLines(name, str) {
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return str.split('\n').map(function(str) {
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return color(name, str);
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}).join('\n');
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}
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/**
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* Object#toString reference.
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*/
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var objToString = Object.prototype.toString;
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/**
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* Check that a / b have the same type.
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*
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* @api private
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* @param {Object} a
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* @param {Object} b
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* @return {boolean}
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*/
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function sameType(a, b) {
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return objToString.call(a) === objToString.call(b);
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}
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