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