toIncludeSameMembers.test.js

import * as matcher from 'src/matchers/toIncludeSameMembers';

expect.extend(matcher);

describe('.toIncludeSameMembers', () => {
  test('passes when arrays are empty', () => {
    expect([]).toIncludeSameMembers([]);
  });

  test('passes when arrays match', () => {
    expect([1, 2, 3]).toIncludeSameMembers([1, 2, 3]);
    expect([{ foo: 'bar' }, { baz: 'qux' }]).toIncludeSameMembers([{ foo: 'bar' }, { baz: 'qux' }]);
  });

  test('passes when arrays match in a different order', () => {
    expect([1, 2, 3]).toIncludeSameMembers([3, 1, 2]);
    expect([{ foo: 'bar' }, { baz: 'qux' }]).toIncludeSameMembers([{ baz: 'qux' }, { foo: 'bar' }]);
    expect([{ foo: 'bar' }, { baz: 'qux' }, { fred: 'thud' }]).not.toIncludeSameMembers([
      { baz: 'qux' },
      { foo: 'bar' },
    ]);
  });

  test('fails when the arrays are not equal in length', () => {
    expect(() => expect([1, 2]).toIncludeSameMembers([1])).toThrowErrorMatchingSnapshot();
  });
});

describe('.not.toIncludeSameMembers', () => {
  test('fails when array contents match', () => {
    expect(() => expect([1]).not.toIncludeSameMembers([1])).toThrowErrorMatchingSnapshot();
  });

  test('passes when the arrays are different in length', () => {
    expect([1, 2, 3]).not.toIncludeSameMembers([1, 2]);
    expect([{ foo: 'bar' }, { baz: 'qux' }]).not.toIncludeSameMembers([{ hello: 'world' }]);
  });

  test('passes when given object is not an array', () => {
    expect(4).not.toIncludeSameMembers([4, 5, 6]);
  });

  test('passes when arrays do not match', () => {
    expect([]).not.toIncludeSameMembers([1]);
    expect([1]).not.toIncludeSameMembers([1, 1]);
    expect([1, 2]).not.toIncludeSameMembers([1, 2, 2]);
    expect([1, 2, 3]).not.toIncludeSameMembers([2, 3, 4]);
  });

  test('passes when no elements match', () => {
    expect([1, 2]).not.toIncludeSameMembers([3, 4]);
  });

  test('passes when only one element matches', () => {
    expect([1, 2, 3]).not.toIncludeSameMembers([3, 4, 5]);
  });
});