luhn-generator
Version:
A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm
514 lines (451 loc) • 10.9 kB
JavaScript
;
/**
* @module Base
*/
/**
* Module dependencies.
*/
var tty = require('tty');
var diff = require('diff');
var milliseconds = require('ms');
var utils = require('../utils');
var supportsColor = process.browser ? null : require('supports-color');
var constants = require('../runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
/**
* Expose `Base`.
*/
exports = module.exports = Base;
/**
* Check if both stdio streams are associated with a tty.
*/
var isatty = process.stdout.isTTY && process.stderr.isTTY;
/**
* Save log references to avoid tests interfering (see GH-3604).
*/
var consoleLog = console.log;
/**
* Enable coloring by default, except in the browser interface.
*/
exports.useColors =
!process.browser &&
(supportsColor.stdout || 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: '․',
comma: ',',
bang: '!'
};
// 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.
*
* @private
* @param {string} type
* @param {string} str
* @return {string}
*/
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');
}
}
};
function showDiff(err) {
return (
err &&
err.showDiff !== false &&
sameType(err.actual, err.expected) &&
err.expected !== undefined
);
}
function stringifyDiffObjs(err) {
if (!utils.isString(err.actual) || !utils.isString(err.expected)) {
err.actual = utils.stringify(err.actual);
err.expected = utils.stringify(err.expected);
}
}
/**
* Returns a diff between 2 strings with coloured ANSI output.
*
* @description
* The diff will be either inline or unified dependent on the value
* of `Base.inlineDiff`.
*
* @param {string} actual
* @param {string} expected
* @return {string} Diff
*/
var generateDiff = (exports.generateDiff = function(actual, expected) {
return exports.inlineDiffs
? inlineDiff(actual, expected)
: unifiedDiff(actual, expected);
});
/**
* Outputs the given `failures` as a list.
*
* @public
* @memberof Mocha.reporters.Base
* @variation 1
* @param {Object[]} failures - Each is Test instance with corresponding
* Error property
*/
exports.list = function(failures) {
var multipleErr, multipleTest;
Base.consoleLog();
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;
if (test.err && test.err.multiple) {
if (multipleTest !== test) {
multipleTest = test;
multipleErr = [test.err].concat(test.err.multiple);
}
err = multipleErr.shift();
} else {
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 = message ? stack.indexOf(message) : -1;
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 (!exports.hideDiff && showDiff(err)) {
stringifyDiffObjs(err);
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);
msg += generateDiff(err.actual, err.expected);
}
// indent stack trace
stack = stack.replace(/^/gm, ' ');
// indented test title
var testTitle = '';
test.titlePath().forEach(function(str, index) {
if (index !== 0) {
testTitle += '\n ';
}
for (var i = 0; i < index; i++) {
testTitle += ' ';
}
testTitle += str;
});
Base.consoleLog(fmt, i + 1, testTitle, msg, stack);
});
};
/**
* Constructs a new `Base` reporter instance.
*
* @description
* All other reporters generally inherit from this reporter.
*
* @public
* @class
* @memberof Mocha.reporters
* @param {Runner} runner - Instance triggers reporter actions.
* @param {Object} [options] - runner options
*/
function Base(runner, options) {
var failures = (this.failures = []);
if (!runner) {
throw new TypeError('Missing runner argument');
}
this.options = options || {};
this.runner = runner;
this.stats = runner.stats; // assigned so Reporters keep a closer reference
runner.on(EVENT_TEST_PASS, function(test) {
if (test.duration > test.slow()) {
test.speed = 'slow';
} else if (test.duration > test.slow() / 2) {
test.speed = 'medium';
} else {
test.speed = 'fast';
}
});
runner.on(EVENT_TEST_FAIL, function(test, err) {
if (showDiff(err)) {
stringifyDiffObjs(err);
}
// more than one error per test
if (test.err && err instanceof Error) {
test.err.multiple = (test.err.multiple || []).concat(err);
} else {
test.err = err;
}
failures.push(test);
});
}
/**
* Outputs common epilogue used by many of the bundled reporters.
*
* @public
* @memberof Mocha.reporters
*/
Base.prototype.epilogue = function() {
var stats = this.stats;
var fmt;
Base.consoleLog();
// passes
fmt =
color('bright pass', ' ') +
color('green', ' %d passing') +
color('light', ' (%s)');
Base.consoleLog(fmt, stats.passes || 0, milliseconds(stats.duration));
// pending
if (stats.pending) {
fmt = color('pending', ' ') + color('pending', ' %d pending');
Base.consoleLog(fmt, stats.pending);
}
// failures
if (stats.failures) {
fmt = color('fail', ' %d failing');
Base.consoleLog(fmt, stats.failures);
Base.list(this.failures);
Base.consoleLog();
}
Base.consoleLog();
};
/**
* Pads the given `str` to `len`.
*
* @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 inline diff between 2 strings with coloured ANSI output.
*
* @private
* @param {String} actual
* @param {String} expected
* @return {string} Diff
*/
function inlineDiff(actual, expected) {
var msg = errorDiff(actual, expected);
// 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 unified diff between two strings with coloured ANSI output.
*
* @private
* @param {String} actual
* @param {String} expected
* @return {string} The diff.
*/
function unifiedDiff(actual, expected) {
var indent = ' ';
function cleanUp(line) {
if (line[0] === '+') {
return indent + colorLines('diff added', line);
}
if (line[0] === '-') {
return indent + colorLines('diff removed', line);
}
if (line.match(/@@/)) {
return '--';
}
if (line.match(/\\ No newline/)) {
return null;
}
return indent + line;
}
function notBlank(line) {
return typeof line !== 'undefined' && line !== null;
}
var msg = diff.createPatch('string', actual, expected);
var lines = msg.split('\n').splice(5);
return (
'\n ' +
colorLines('diff added', '+ expected') +
' ' +
colorLines('diff removed', '- actual') +
'\n\n' +
lines
.map(cleanUp)
.filter(notBlank)
.join('\n')
);
}
/**
* Returns character diff for `err`.
*
* @private
* @param {String} actual
* @param {String} expected
* @return {string} the diff
*/
function errorDiff(actual, expected) {
return diff
.diffWordsWithSpace(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('');
}
/**
* Colors lines for `str`, using the color `name`.
*
* @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;
/**
* Checks that a / b have the same type.
*
* @private
* @param {Object} a
* @param {Object} b
* @return {boolean}
*/
function sameType(a, b) {
return objToString.call(a) === objToString.call(b);
}
Base.consoleLog = consoleLog;
Base.abstract = true;