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import { formatRelevantDigits, bytesToKiB, bytesToMiB } from '~/lib/utils/number_utils';
describe('Number Utils', () => {
describe('formatRelevantDigits', () => {
it('returns an empty string when the number is NaN', () => {
expect(formatRelevantDigits('fail')).toBe('');
});
it('returns 4 decimals when there is 4 plus digits to the left', () => {
const formattedNumber = formatRelevantDigits('1000.1234567');
const rightFromDecimal = formattedNumber.split('.')[1];
const leftFromDecimal = formattedNumber.split('.')[0];
expect(rightFromDecimal.length).toBe(4);
expect(leftFromDecimal.length).toBe(4);
});
it('returns 3 decimals when there is 1 digit to the left', () => {
const formattedNumber = formatRelevantDigits('0.1234567');
const rightFromDecimal = formattedNumber.split('.')[1];
const leftFromDecimal = formattedNumber.split('.')[0];
expect(rightFromDecimal.length).toBe(3);
expect(leftFromDecimal.length).toBe(1);
});
it('returns 2 decimals when there is 2 digits to the left', () => {
const formattedNumber = formatRelevantDigits('10.1234567');
const rightFromDecimal = formattedNumber.split('.')[1];
const leftFromDecimal = formattedNumber.split('.')[0];
expect(rightFromDecimal.length).toBe(2);
expect(leftFromDecimal.length).toBe(2);
});
it('returns 1 decimal when there is 3 digits to the left', () => {
const formattedNumber = formatRelevantDigits('100.1234567');
const rightFromDecimal = formattedNumber.split('.')[1];
const leftFromDecimal = formattedNumber.split('.')[0];
expect(rightFromDecimal.length).toBe(1);
expect(leftFromDecimal.length).toBe(3);
});
});
describe('bytesToKiB', () => {
it('calculates KiB for the given bytes', () => {
expect(bytesToKiB(1024)).toEqual(1);
expect(bytesToKiB(1000)).toEqual(0.9765625);
});
});
describe('bytesToMiB', () => {
it('calculates MiB for the given bytes', () => {
expect(bytesToMiB(1048576)).toEqual(1);
expect(bytesToMiB(1000000)).toEqual(0.95367431640625);
});
});
});
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