src/utils/generateMonthsOptions.test.js
import generateMonthsOptions from './generateMonthsOptions';
test('Generates option tags for each month of the year', () => {
const monthsOptions = generateMonthsOptions();
expect(monthsOptions.length).toEqual(12);
const initalMonthValue = 1;
for (var i = 0; i < monthsOptions.length; i++) {
let monthValue = initalMonthValue + i;
expect(monthsOptions[i].props.value).toEqual(monthValue)
}
});