Deep equality of iterables in Jest

deep-iterable-equality-jest.js

describe('deep iterable equality', () => {
  it('should deeply compare iterables based upon their type', () => {
    expect([1, 2, 3]).toEqual([1, 2, 3]);
    expect([1, [2, 3]]).toEqual([1, [2, 3]]);
    expect([1, 2, 3]).not.toEqual([3, 2, 1]);

    expect(new Set()).toEqual(new Set());
    expect(new Set([1, 2, 3])).toEqual(new Set([1, 2, 3]));
    expect(new Set([1, 2, 3])).toEqual(new Set([3, 2, 1]));
    expect(new Set([1, [2, 3]])).toEqual(new Set([[2, 3], 1]));
    expect(new Set([1, new Set([2, 3])])).toEqual(new Set([new Set([3, 2]), 1]));
    expect(new Set([1, 2, 3])).not.toEqual(new Set([3, 1, 1]));

    expect(new Map()).toEqual(new Map());
    expect(new Map([[1, 1], [2, 2], [3, 3]])).toEqual(new Map([[1, 1], [2, 2], [3, 3]]));
    expect(new Map([[1, 1], [2, 2], [3, 3]])).toEqual(new Map([[2, 2], [1, 1], [3, 3]]));
    expect(new Map([[{x: 1}, true]])).toEqual(new Map([[{x: 1}, true]]));
    expect(new Map([[{x: 1}, true]])).not.toEqual(new Map([[{x: 2}, true]]));
    expect(new Map([[1, 1], [2, 2], [3, 3]])).not.toEqual(new Map([[2, 2], [1, 1], [4, 4]]));

    expect(new Uint8Array([1, 2, 3])).toEqual(new Uint8Array([1, 2, 3]));
    expect(new Uint8Array([1, 2, 3])).not.toEqual(new Uint8Array([3, 2, 1]));
  });
});