Implement random

index.test.ts

@@ -0,0 +1,36 @@
+import {expect, test} from 'bun:test'
+import Random from '.'
+
+test('same result', async () => {
+    const random1 = new Random(new Uint8Array(64))
+    const a = await random1.random(128n)
+    const a2 = await random1.random(128n)
+    expect(a2).not.toBe(a)
+
+    const random2 = new Random(new Uint8Array(64))
+    const b = await random2.random(128n)
+
+    expect(a).toBe(b)
+})
+
+test('Different state, different number', async () => {
+    const random1 = new Random(new Uint8Array(64))
+    const a = await random1.random(128n)
+
+    const state = new Uint8Array(64)
+    state[0] = 1
+    const random2= new Random(state)
+    const b = await random2.random(128n)
+
+    expect(a).not.toBe(b)
+})
+
+test('New random is random', async () => {
+    const r1 = new Random()
+    const r2 = new Random()
+
+    const a = await r1.random(100n)
+    const b = await r2.random(100n)
+
+    expect(b).not.toBe(a)
+})