rng class..

tests/Rng.test.js

@@ -0,0 +1,23 @@
+import { Rng } from '../common/Rng'
+
+test('random should give same results', () => {
+  const rng = new Rng(1337)
+  const rng2 = new Rng(1337)
+  for (let i = 0; i < 100; i++) {
+    expect(rng.random()).toBe(rng2.random())
+  }
+})
+
+test('should be serializable/deserializable', () => {
+  const rng = new Rng(1337)
+  // do some randoms, so that it doesnt start at 'after init'
+  for (let i = 0; i < 100; i++) {
+    rng.random()
+  }
+
+  const rng2 = Rng.unserialize(Rng.serialize(rng))
+
+  for (let i = 0; i < 100; i++) {
+    expect(rng.random()).toBe(rng2.random())
+  }
+})