27 lines
792 B
TypeScript
27 lines
792 B
TypeScript
import { describe, expect, it } from "@suaveplan/testing/runner";
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import { Xoshiro256PlusPlusRng } from "./xoshiro256.js";
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class ZeroXoshiro extends Xoshiro256PlusPlusRng {
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public constructor() {
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super(1);
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this.s0 = 0n;
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this.s1 = 0n;
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this.s2 = 0n;
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this.s3 = 0n;
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}
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public callEnsureNonZero(): void {
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this.ensureNonZeroState();
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}
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public readState(): [bigint, bigint, bigint, bigint] {
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return [this.s0, this.s1, this.s2, this.s3];
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}
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}
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describe("Xoshiro256 ensureNonZeroState guard", () => {
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it("repairs an all-zero state by setting s0=1", { timeout: 5000 }, () => {
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const rng = new ZeroXoshiro();
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rng.callEnsureNonZero();
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expect(rng.readState()).toEqual([1n, 0n, 0n, 0n]);
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});
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});
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