Add another test that compares different v1 uuid generators

test/compare_v1.js

@@ -0,0 +1,50 @@
+var assert = require('assert'),
+    nodeuuid = require('../uuid'),
+    uuidjs = require('uuid-js'),
+    libuuid = require('uuid').generate,
+    util = require('util'),
+    exec = require('child_process').exec;
+
+function compare(ids) {
+  var sorted = ([].concat(ids)).sort();
+  console.log(ids);
+  if (sorted.toString() !== ids.toString()) {
+    console.log('Warning: sorted !== ids');
+  }
+}
+
+// Test time order of v1 uuids
+var ids = [];
+while (ids.length < 10e3) ids.push(nodeuuid.v1());
+
+var max = 10;
+console.log('node-uuid:');
+ids = [];
+for (var i = 0; i < max; i++) ids.push(nodeuuid.v1());
+compare(ids);
+
+console.log('');
+console.log('uuidjs:');
+ids = [];
+for (var i = 0; i < max; i++) ids.push(uuidjs.create(1).toString());
+compare(ids);
+
+console.log('');
+console.log('libuuid:');
+ids = [];
+var count = 0;
+var last = function() {
+  compare(ids);
+}
+var cb = function(err, stdout, stderr) {
+  ids.push(stdout.substring(0, stdout.length-1));
+  count++;
+  if (count < max) {
+    return next();
+  }
+  last();
+};
+var next = function() {
+  exec('uuid -1', cb);
+};
+next();