import getSurroundingTimeUnits from './getSurroundingTimeUnits';
describe('Surrounding months', () => {
    describe('works for months surrouding Febuary', () => {
        test('January', () => {
            const { month } = getSurroundingTimeUnits('2020-01-25');
            expect(month.last.format('YYYY-MM-DD')).toEqual('2019-12-31');
            expect(month.next.format('YYYY-MM-DD')).toEqual('2020-02-01');
        });
        test('March', () => {
            const { month } = getSurroundingTimeUnits('2020-03-25');
            expect(month.last.format('YYYY-MM-DD')).toEqual('2020-02-29');
            expect(month.next.format('YYYY-MM-DD')).toEqual('2020-04-01');
        });
    });
    test('works for end-of-month visible date', () => {
        const { month } = getSurroundingTimeUnits('2020-07-31');
        expect(month.last.format('YYYY-MM-DD')).toEqual('2020-06-30');
        expect(month.next.format('YYYY-MM-DD')).toEqual('2020-08-01');
    });
    test('works for start-of-month visible date', () => {
        const { month } = getSurroundingTimeUnits('2020-07-01');
        expect(month.last.format('YYYY-MM-DD')).toEqual('2020-06-30');
        expect(month.next.format('YYYY-MM-DD')).toEqual('2020-08-01');
    });
    test('works for end-of-year visible dates', () => {
        const { month } = getSurroundingTimeUnits('2020-12-31');
        expect(month.last.format('YYYY-MM-DD')).toEqual('2020-11-30');
        expect(month.next.format('YYYY-MM-DD')).toEqual('2021-01-01');
    });
    test('works for start-of-year visible dates', () => {
        const { month } = getSurroundingTimeUnits('2020-01-01');
        expect(month.last.format('YYYY-MM-DD')).toEqual('2019-12-31');
        expect(month.next.format('YYYY-MM-DD')).toEqual('2020-02-01');
    });
});
describe('Surrounding years', () => {
    test('works for end-of-month visible date', () => {
        const { year } = getSurroundingTimeUnits('2020-07-31');
        expect(year.last.format('YYYY-MM-DD')).toEqual('2019-12-31');
        expect(year.next.format('YYYY-MM-DD')).toEqual('2021-01-01');
    });
    test('works for start-of-month visible date', () => {
        const { year } = getSurroundingTimeUnits('2020-07-01');
        expect(year.last.format('YYYY-MM-DD')).toEqual('2019-12-31');
        expect(year.next.format('YYYY-MM-DD')).toEqual('2021-01-01');
    });
    test('works for end-of-year visible dates', () => {
        const { year } = getSurroundingTimeUnits('2020-12-31');
        expect(year.last.format('YYYY-MM-DD')).toEqual('2019-12-31');
        expect(year.next.format('YYYY-MM-DD')).toEqual('2021-01-01');
    });
    test('works for start-of-year visible dates', () => {
        const { year } = getSurroundingTimeUnits('2020-01-01');
        expect(year.last.format('YYYY-MM-DD')).toEqual('2019-12-31');
        expect(year.next.format('YYYY-MM-DD')).toEqual('2021-01-01');
    });
});
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