flow like the river

VISUALIZACION/node_modules/ngraph.random/test/random.js

@@ -0,0 +1,39 @@
+var test = require('tap').test,
+    randomAPI = require('..');
+
+test('random iterator returns all items', function (t) {
+    var a = [1, 2, 3, 4, 5, 6],
+        aCopy = a.map(function (i) { return i; }),
+        shuffle = randomAPI.randomIterator(aCopy),
+        iterated = [];
+
+    shuffle.forEach(function (i) {
+        iterated.push(i);
+        t.ok(a.indexOf(i) !== -1, 'Shuffle iterator should return only items from original array. Passed ' + i);
+    });
+
+    t.ok(iterated.length === a.length, 'Number of iterated items does not match number of original array items');
+    t.end();
+});
+
+test('Same seed gives same values', function (t) {
+  var random1 = randomAPI.random(42);
+  var random2 = randomAPI.random(42);
+
+  t.equal(random1.next(100), random2.next(100), "Same seed should give same values");
+  t.end();
+});
+
+test('it can generate gaussian', function (t) {
+    var random = randomAPI.random(42);
+    t.ok(typeof random.gaussian() === 'number', 'number generated');
+    t.end();
+});
+
+test('can use function syntax', function (t) {
+  var random1 = randomAPI(42);
+  var random2 = randomAPI.random(42);
+
+  t.equal(random1.nextDouble(), random2.nextDouble(), "Same seed should give same values");
+  t.end();
+});