Jest toContain
# 1. Use '.toContain' when you want to check that an item is in an array. # 2 '.toContain' can also check whether a string is a substring of another string. test('the flavor list contains lime', () => { expect(['lime', 'mangle']).toContain('lime'); }); test('the flavor list contains lime', () => { expect("lime juice").toContain('lime'); });
Source: jestjs.io
jest compare objects
const expected = { name:'component name' } const actual = { name: 'component name', type: 'form' } expect(actual).toMatchObject(expected)
Source: stackoverflow.com