mirror of
https://github.com/weaveworks/scope.git
synced 2026-03-04 18:51:17 +00:00
40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
|
|
describe('MathUtils', () => {
|
|
const MathUtils = require('../math-utils');
|
|
|
|
describe('module', () => {
|
|
const f = MathUtils.modulo;
|
|
|
|
it('it should calculate the modulo (also for negatives)', () => {
|
|
expect(f(5, 5)).toBe(0);
|
|
expect(f(4, 5)).toBe(4);
|
|
expect(f(3, 5)).toBe(3);
|
|
expect(f(2, 5)).toBe(2);
|
|
expect(f(1, 5)).toBe(1);
|
|
expect(f(0, 5)).toBe(0);
|
|
expect(f(-1, 5)).toBe(4);
|
|
expect(f(-2, 5)).toBe(3);
|
|
expect(f(-3, 5)).toBe(2);
|
|
expect(f(-4, 5)).toBe(1);
|
|
expect(f(-5, 5)).toBe(0);
|
|
});
|
|
});
|
|
|
|
describe('round', () => {
|
|
const f = MathUtils.round;
|
|
|
|
it('it should round the decimal number to given precision', () => {
|
|
expect(f(-173.6499023, -2)).toBe(-200);
|
|
expect(f(-173.6499023, -1)).toBe(-170);
|
|
expect(f(-173.6499023, 0)).toBe(-174);
|
|
expect(f(-173.6499023)).toBe(-174);
|
|
expect(f(-173.6499023, 1)).toBe(-173.6);
|
|
expect(f(-173.6499023, 2)).toBe(-173.65);
|
|
expect(f(0.0013, 2)).toBe(0);
|
|
expect(f(0.0013, 3)).toBe(0.001);
|
|
expect(f(0.0013, 4)).toBe(0.0013);
|
|
expect(f(0.0013, 5)).toBe(0.0013);
|
|
});
|
|
});
|
|
});
|