@technobuddha/library/src/ceil.test.ts

A large library of useful functions

import { ceil } from './ceil.ts';

describe('ceil', () => {
  test('should handle positive numbers', () => {
    expect(ceil(1 + Number.EPSILON)).toBe(1);
    expect(ceil(2 + Number.EPSILON)).toBe(2);
    expect(ceil(3 + Number.EPSILON)).toBe(3);
  });

  test('should handle negative numbers', () => {
    expect(ceil(-1 + Number.EPSILON)).toBe(-1);
    expect(ceil(-2 + Number.EPSILON)).toBe(-2);
    expect(ceil(-3 + Number.EPSILON)).toBe(-3);
  });

  test('should handle tolerance', () => {
    expect(ceil(6.1, { tolerance: 0.1 })).toBe(6);
    expect(ceil(-6.1, { tolerance: 0.1 })).toBe(-6);
  });

  test('should handle precision', () => {
    expect(ceil(6.01 + Number.EPSILON, { precision: 2 })).toBe(6.01);
    expect(ceil(6100 + Number.EPSILON, { precision: -2 })).toBe(6100);
    expect(ceil(-6.01 + Number.EPSILON, { precision: 2 })).toBe(-6.01);
    expect(ceil(-6100 + Number.EPSILON, { precision: -2 })).toBe(-6100);
  });

  test('should handle NaN and Infinity', () => {
    expect(ceil(Number.NaN)).toBe(Number.NaN);
    expect(ceil(Number.POSITIVE_INFINITY)).toBe(Number.POSITIVE_INFINITY);
    expect(ceil(Number.NEGATIVE_INFINITY)).toBe(Number.NEGATIVE_INFINITY);
  });
});