javascript-functions/src/arrays.test.js

Commonly used JavaScript Functions

import * as jsf from "./arrays.js";


describe("containsAll()", () => {
  it("should return TRUE", () => {
    let baseArr = ["1", "2", "3"];
    let arr = ["1", "2", "3"];
    expect(jsf.containsAll(baseArr, arr)).toBeTruthy();
  });

  it("should return TRUE", () => {
    let baseArr = ["1", "2", "3", "XXX"];
    let arr = ["1", "2", "3"];
    expect(jsf.containsAll(baseArr, arr)).toBeTruthy();
  });

  it("should return TRUE", () => {
    let baseArr = ["1", "2", "3"];
    let arr = ["2", "3"];
    expect(jsf.containsAll(baseArr, arr)).toBeTruthy();
  });

  it("should return FALSE", () => {
    let baseArr = ["1", "2", "3"];
    let arr = ["XXX", "1", "2", "3"];
    expect(jsf.containsAll(baseArr, arr)).not.toBeTruthy();
  });

  it("should return FALSE", () => {
    let baseArr = ["1", "2", "3"];
    let arr = ["a", "b", "c"];
    expect(jsf.containsAll(baseArr, arr)).not.toBeTruthy();
  });
});

describe("toggleArrayValue()", () => {
  it("Should Remove 1", () => {
    let array = ["1", "2", "3"];
    let value = "1";
    expect(jsf.toggleArrayValue(array, value)).toEqual(["2", "3"]);
  });

  it("Should remove 3", () => {
    let array = ["1", "2", "3"];
    let value = "3";
    expect(jsf.toggleArrayValue(array, value)).toEqual(["1", "2"]);
  });

  it("Should add XXX", () => {
    let array = ["1", "2", "3"];
    let value = "XXX";
    expect(jsf.toggleArrayValue(array, value)).toEqual(["1", "2", "3", "XXX"]);
  });
});

describe("getUniqueObjs()", () => {
  it("returns a unique array of objects", () => {
    const arr = [
      { id: 1, name: "1" },
      { id: 1, name: "1" },
      { id: 1, name: "1" },
      { id: 1, name: "1" },
    ];
    const uniqArr = [{ id: 1, name: "1" }];
    expect(jsf.getUniqueObjs(arr)).toEqual(uniqArr);
  });
});

describe("arrToObj()", () => {
  it("Converts two dimensional array into an object.", () => {
    const output = jsf.arrToObj([
      ["x", 1],
      ["y", 2],
    ]);
    expect(output).toEqual({ x: 1, y: 2 });
  });

  it("Should throw an error", () => {
    expect(() => jsf.arrToObj({ x: 1, y: 2 })).toThrow();
  });

  it("Should throw an error", () => {
    expect(() => jsf.arrToObj("X")).toThrow();
  });

  it("Should throw an error", () => {
    expect(() => jsf.arrToObj(1)).toThrow();
  });
});