// SPDX-FileCopyrightText: Copyright Orangebot, Inc. and Medplum contributors
// SPDX-License-Identifier: Apache-2.0
import { addMinutes, areIntervalsOverlapping, clamp } from './date';
describe('addMinutes', () => {
test('adds the given number of minutes', () => {
const date = new Date('2026-01-10T12:00:00Z');
expect(addMinutes(date, 30)).toEqual(new Date('2026-01-10T12:30:00Z'));
});
test('does not mutate the input date', () => {
const date = new Date('2026-01-10T12:00:00Z');
addMinutes(date, 30);
expect(date).toEqual(new Date('2026-01-10T12:00:00Z'));
});
});
describe('areIntervalsOverlapping', () => {
test('returns true when intervals overlap', () => {
const left = {
start: new Date('2026-01-10'),
end: new Date('2026-01-20'),
};
const right = {
start: new Date('2026-01-15'),
end: new Date('2026-01-25'),
};
expect(areIntervalsOverlapping(left, right)).toBe(true);
});
test('returns true when one interval contains the other', () => {
const left = {
start: new Date('2026-01-10'),
end: new Date('2026-01-30'),
};
const right = {
start: new Date('2026-01-15'),
end: new Date('2026-01-20'),
};
expect(areIntervalsOverlapping(left, right)).toBe(true);
});
test('returns true when intervals are identical', () => {
const left = {
start: new Date('2026-01-10'),
end: new Date('2026-01-20'),
};
const right = {
start: new Date('2026-01-10'),
end: new Date('2026-01-20'),
};
expect(areIntervalsOverlapping(left, right)).toBe(true);
});
test('returns false when intervals do not overlap', () => {
const left = {
start: new Date('2026-01-10'),
end: new Date('2026-01-15'),
};
const right = {
start: new Date('2026-01-20'),
end: new Date('2026-01-25'),
};
expect(areIntervalsOverlapping(left, right)).toBe(false);
});
test('returns false when intervals are adjacent (non-inclusive)', () => {
const left = {
start: new Date('2026-01-10'),
end: new Date('2026-01-15'),
};
const right = {
start: new Date('2026-01-15'),
end: new Date('2026-01-20'),
};
expect(areIntervalsOverlapping(left, right)).toBe(false);
});
test('returns true when intervals are adjacent (inclusive)', () => {
const left = {
start: new Date('2026-01-10'),
end: new Date('2026-01-15'),
};
const right = {
start: new Date('2026-01-15'),
end: new Date('2026-01-20'),
};
expect(areIntervalsOverlapping(left, right, { inclusive: true })).toBe(true);
});
test('returns false when intervals do not overlap (inclusive)', () => {
const left = {
start: new Date('2026-01-10'),
end: new Date('2026-01-14'),
};
const right = {
start: new Date('2026-01-15'),
end: new Date('2026-01-20'),
};
expect(areIntervalsOverlapping(left, right, { inclusive: true })).toBe(false);
});
test('is symmetric - order of intervals does not matter', () => {
const left = {
start: new Date('2026-01-10'),
end: new Date('2026-01-20'),
};
const right = {
start: new Date('2026-01-15'),
end: new Date('2026-01-25'),
};
expect(areIntervalsOverlapping(left, right)).toBe(areIntervalsOverlapping(right, left));
});
});
describe('clamp', () => {
test('clamps early dates to the start of the interval', () => {
const date = new Date('2026-01-10');
const interval = {
start: new Date('2026-01-15'),
end: new Date('2026-01-21'),
};
expect(clamp(date, interval)).toEqual(interval.start);
});
test('clamps late dates to the end of the interval', () => {
const date = new Date('2026-01-25');
const interval = {
start: new Date('2026-01-15'),
end: new Date('2026-01-21'),
};
expect(clamp(date, interval)).toEqual(interval.end);
});
test('returns the date when it is in the interval', () => {
const date = new Date('2026-01-18');
const interval = {
start: new Date('2026-01-15'),
end: new Date('2026-01-21'),
};
expect(clamp(date, interval)).toEqual(date);
});
});
