import transactionSelector from '../../src/selectors/transaction' describe('selectors - transaction', () => { it('returns the transaction item for the given id and null otherwise', () => { const state = { transactions: { items: { transactionA: { id: 'transactionA' }, }, }, } expect(transactionSelector(state, 'transactionA')).toEqual({ id: 'transactionA', }) expect(transactionSelector(state, 'transactiona')).toBeNull() }) })