devextreme/esm/__internal/scheduler/global_cache.test.js

JavaScript/TypeScript Component Suite for Responsive Web Development

/**
 * DevExtreme (esm/__internal/scheduler/global_cache.test.js)
 * Version: 25.2.7
 * Build date: Tue May 05 2026
 *
 * Copyright (c) 2012 - 2026 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */
import {
    describe,
    expect,
    it,
    jest
} from "@jest/globals";
import {
    Cache
} from "./global_cache";
describe("global cache", () => {
    it("should be empty at initialization", () => {
        const cache = new Cache;
        expect(cache.size).toBe(0)
    });
    it("should get non-existed value", () => {
        const cache = new Cache;
        expect(cache.get("test0")).toBe(void 0)
    });
    it("should get existed value", () => {
        const cache = new Cache;
        cache.memo("test0", () => "callbackValue");
        expect(cache.get("test0")).toBe("callbackValue")
    });
    it("should memo value", () => {
        const cache = new Cache;
        const valueCallback = jest.fn().mockReturnValue(1).mockReturnValueOnce(2);
        const memoValue = cache.memo("test", valueCallback);
        expect(cache.get("test")).toBe(memoValue);
        expect(cache.size).toBe(1)
    });
    it("should memo twice for deleted value", () => {
        const cache = new Cache;
        const valueCallback1 = jest.fn().mockReturnValue(1).mockReturnValueOnce(2);
        const valueCallback2 = jest.fn().mockReturnValue(1).mockReturnValueOnce(2);
        const memoValue1 = cache.memo("test1", valueCallback1);
        const memoValue2 = cache.memo("test2", valueCallback2);
        cache.delete("test1");
        expect(cache.size).toBe(1);
        expect(cache.memo("test1", valueCallback1)).not.toBe(memoValue1);
        expect(cache.memo("test2", valueCallback2)).toBe(memoValue2);
        expect(cache.size).toBe(2)
    });
    it("should delete existed value", () => {
        const cache = new Cache;
        cache.memo("test1", () => "callbackValue1");
        cache.delete("test1");
        expect(cache.get("test1")).toBe(void 0);
        expect(cache.size).toBe(0)
    });
    it("should delete non-existed value", () => {
        const cache = new Cache;
        cache.memo("test1", () => "callbackValue1");
        cache.memo("test2", () => "callbackValue2");
        cache.delete("non-existed");
        expect(cache.size).toBe(2)
    });
    it("should clear all values", () => {
        const cache = new Cache;
        cache.memo("test0", () => "callbackValue");
        cache.memo("test1", () => "callbackValue");
        cache.clear();
        expect(cache.size).toBe(0)
    })
});