opvault.js/test/weakMap.test.ts
2021-11-05 03:17:18 -04:00

44 lines
1.1 KiB
TypeScript

import { describe, it } from "mocha";
import { expect } from "chai";
import { WeakValueMap } from "../packages/opvault.js/weakMap";
declare const gc: () => void;
describe("WeakValueMap", () => {
interface Value {
value: number;
}
it("covers base use cases", () => {
const map = new WeakValueMap<string, Value>();
const object = { value: 1 };
map.set("key", object);
expect(map.get("key")!.value).to.equal(1);
expect(map.delete("key")).to.be.true;
expect(!map.delete("key")).to.be.true;
});
it("overrides previous value", () => {
const map = new WeakValueMap<string, Value>();
map.set("key", { value: 2 });
map.set("key", { value: 3 });
expect(map.get("key")!.value).to.equal(3);
});
it("deletes garbage collected values", (done) => {
const map = new WeakValueMap<string, Value>();
map.set("key", { value: 1 });
setTimeout(() => {
gc();
expect(map.has("key")).to.be.false;
map.set("key", { value: 2 });
setTimeout(() => {
gc();
done();
});
});
});
});