parallel.es/test/common/util/simple-map.specs.ts

Simple parallelization for EcmaScript

import {SimpleMap} from "../../../src/common/util/simple-map";
describe("SimpleMap", function () {

    let map: SimpleMap<string, string>;

    beforeEach(function () {
        map = new SimpleMap<string, string>();
    });

    describe("set", function () {
        it("adds a new element to the map if the key has not been in the map before", function () {
            // act
            map.set("test", "value");

            // assert
            expect(map.has("test")).toBe(true);
            expect(map.get("test")).toEqual("value");
        });

        it("overrides an existing element in the map", function () {
            // arrange
            map.set("test", "old value");

            // act
            map.set("test", "new value");

            // assert
            expect(map.get("test")).toEqual("new value");
        });
   });

    describe("has", function () {
       it("returns false for not yet existing elements", function () {
           // act, assert
           expect(map.has("test")).toBe(false);
       });
    });

    describe("get", function () {
        it("returns undefined for not existing keys", function () {
           // act, assert
           expect(map.get("test")).toBeUndefined();
        });

        it("does not return internal properties", function () {
            // act, assert
            expect(map.get("constructor")).toBeUndefined();
        });
    });

    describe("clear", function () {
       it("removes all existing registrations", function () {
            // arrange
           map.set("test", "value");

           // act
           map.clear();

           // assert
           expect(map.has("test")).toBe(false);
       });
    });
});