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Diffstat (limited to 'node_modules/node-uuid/test/test.js')
| -rw-r--r-- | node_modules/node-uuid/test/test.js | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/node_modules/node-uuid/test/test.js b/node_modules/node-uuid/test/test.js new file mode 100644 index 000000000..246922561 --- /dev/null +++ b/node_modules/node-uuid/test/test.js @@ -0,0 +1,228 @@ +if (!this.uuid) { + // node.js + uuid = require('../uuid'); +} + +// +// x-platform log/assert shims +// + +function _log(msg, type) { + type = type || 'log'; + + if (typeof(document) != 'undefined') { + document.write('<div class="' + type + '">' + msg.replace(/\n/g, '<br />') + '</div>'); + } + if (typeof(console) != 'undefined') { + var color = { + log: '\033[39m', + warn: '\033[33m', + error: '\033[31m' + }; + console[type](color[type] + msg + color.log); + } +} + +function log(msg) {_log(msg, 'log');} +function warn(msg) {_log(msg, 'warn');} +function error(msg) {_log(msg, 'error');} + +function assert(res, msg) { + if (!res) { + error('FAIL: ' + msg); + } else { + log('Pass: ' + msg); + } +} + +// +// Unit tests +// + +// Verify ordering of v1 ids created with explicit times +var TIME = 1321644961388; // 2011-11-18 11:36:01.388-08:00 + +function compare(name, ids) { + ids = ids.map(function(id) { + return id.split('-').reverse().join('-'); + }).sort(); + var sorted = ([].concat(ids)).sort(); + + assert(sorted.toString() == ids.toString(), name + ' have expected order'); +} + +// Verify ordering of v1 ids created using default behavior +compare('uuids with current time', [ + uuid.v1(), + uuid.v1(), + uuid.v1(), + uuid.v1(), + uuid.v1() +]); + +// Verify ordering of v1 ids created with explicit times +compare('uuids with time option', [ + uuid.v1({msecs: TIME - 10*3600*1000}), + uuid.v1({msecs: TIME - 1}), + uuid.v1({msecs: TIME}), + uuid.v1({msecs: TIME + 1}), + uuid.v1({msecs: TIME + 28*24*3600*1000}) +]); + +assert( + uuid.v1({msecs: TIME}) != uuid.v1({msecs: TIME}), + 'IDs created at same msec are different' +); + +// Verify throw if too many ids created +var thrown = false; +try { + uuid.v1({msecs: TIME, nsecs: 10000}); +} catch (e) { + thrown = true; +} +assert(thrown, 'Exception thrown when > 10K ids created in 1 ms'); + +// Verify clock regression bumps clockseq +var uidt = uuid.v1({msecs: TIME}); +var uidtb = uuid.v1({msecs: TIME - 1}); +assert( + parseInt(uidtb.split('-')[3], 16) - parseInt(uidt.split('-')[3], 16) === 1, + 'Clock regression by msec increments the clockseq' +); + +// Verify clock regression bumps clockseq +var uidtn = uuid.v1({msecs: TIME, nsecs: 10}); +var uidtnb = uuid.v1({msecs: TIME, nsecs: 9}); +assert( + parseInt(uidtnb.split('-')[3], 16) - parseInt(uidtn.split('-')[3], 16) === 1, + 'Clock regression by nsec increments the clockseq' +); + +// Verify explicit options produce expected id +var id = uuid.v1({ + msecs: 1321651533573, + nsecs: 5432, + clockseq: 0x385c, + node: [ 0x61, 0xcd, 0x3c, 0xbb, 0x32, 0x10 ] +}); +assert(id == 'd9428888-122b-11e1-b85c-61cd3cbb3210', 'Explicit options produce expected id'); + +// Verify adjacent ids across a msec boundary are 1 time unit apart +var u0 = uuid.v1({msecs: TIME, nsecs: 9999}); +var u1 = uuid.v1({msecs: TIME + 1, nsecs: 0}); + +var before = u0.split('-')[0], after = u1.split('-')[0]; +var dt = parseInt(after, 16) - parseInt(before, 16); +assert(dt === 1, 'Ids spanning 1ms boundary are 100ns apart'); + +// +// Test parse/unparse +// + +id = '00112233445566778899aabbccddeeff'; +assert(uuid.unparse(uuid.parse(id.substr(0,10))) == + '00112233-4400-0000-0000-000000000000', 'Short parse'); +assert(uuid.unparse(uuid.parse('(this is the uuid -> ' + id + id)) == + '00112233-4455-6677-8899-aabbccddeeff', 'Dirty parse'); + +// +// Perf tests +// + +var generators = { + v1: uuid.v1, + v4: uuid.v4 +}; + +var UUID_FORMAT = { + v1: /[0-9a-f]{8}-[0-9a-f]{4}-1[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}/i, + v4: /[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}/i +}; + +var N = 1e4; + +// Get %'age an actual value differs from the ideal value +function divergence(actual, ideal) { + return Math.round(100*100*(actual - ideal)/ideal)/100; +} + +function rate(msg, t) { + log(msg + ': ' + (N / (Date.now() - t) * 1e3 | 0) + ' uuids\/second'); +} + +for (var version in generators) { + var counts = {}, max = 0; + var generator = generators[version]; + var format = UUID_FORMAT[version]; + + log('\nSanity check ' + N + ' ' + version + ' uuids'); + for (var i = 0, ok = 0; i < N; i++) { + id = generator(); + if (!format.test(id)) { + throw Error(id + ' is not a valid UUID string'); + } + + if (id != uuid.unparse(uuid.parse(id))) { + assert(fail, id + ' is not a valid id'); + } + + // Count digits for our randomness check + if (version == 'v4') { + var digits = id.replace(/-/g, '').split(''); + for (var j = digits.length-1; j >= 0; j--) { + var c = digits[j]; + max = Math.max(max, counts[c] = (counts[c] || 0) + 1); + } + } + } + + // Check randomness for v4 UUIDs + if (version == 'v4') { + // Limit that we get worried about randomness. (Purely empirical choice, this!) + var limit = 2*100*Math.sqrt(1/N); + + log('\nChecking v4 randomness. Distribution of Hex Digits (% deviation from ideal)'); + + for (var i = 0; i < 16; i++) { + var c = i.toString(16); + var bar = '', n = counts[c], p = Math.round(n/max*100|0); + + // 1-3,5-8, and D-F: 1:16 odds over 30 digits + var ideal = N*30/16; + if (i == 4) { + // 4: 1:1 odds on 1 digit, plus 1:16 odds on 30 digits + ideal = N*(1 + 30/16); + } else if (i >= 8 && i <= 11) { + // 8-B: 1:4 odds on 1 digit, plus 1:16 odds on 30 digits + ideal = N*(1/4 + 30/16); + } else { + // Otherwise: 1:16 odds on 30 digits + ideal = N*30/16; + } + var d = divergence(n, ideal); + + // Draw bar using UTF squares (just for grins) + var s = n/max*50 | 0; + while (s--) bar += '='; + + assert(Math.abs(d) < limit, c + ' |' + bar + '| ' + counts[c] + ' (' + d + '% < ' + limit + '%)'); + } + } +} + +// Perf tests +for (var version in generators) { + log('\nPerformance testing ' + version + ' UUIDs'); + var generator = generators[version]; + var buf = new uuid.BufferClass(16); + + for (var i = 0, t = Date.now(); i < N; i++) generator(); + rate('uuid.' + version + '()', t); + + for (var i = 0, t = Date.now(); i < N; i++) generator('binary'); + rate('uuid.' + version + '(\'binary\')', t); + + for (var i = 0, t = Date.now(); i < N; i++) generator('binary', buf); + rate('uuid.' + version + '(\'binary\', buffer)', t); +} |