52 lines
1.5 KiB
TypeScript
52 lines
1.5 KiB
TypeScript
import { dec2Frac, fracToDec } from '../src';
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describe('Math Utilities', () => {
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describe('dec2Frac', () => {
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it('should convert decimal to fraction with whole and remainder', () => {
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expect(dec2Frac(1.25)).toBe('1 1/4');
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expect(dec2Frac(2.5)).toBe('2 1/2');
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expect(dec2Frac(3.75)).toBe('3 3/4');
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});
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it('should convert integer to fraction with denominator', () => {
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expect(dec2Frac(4)).toBe('4');
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expect(dec2Frac(0)).toBe('0');
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});
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it('should convert proper fraction (less than 1)', () => {
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expect(dec2Frac(0.75)).toBe('3/4');
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expect(dec2Frac(0.5)).toBe('1/2');
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expect(dec2Frac(0.1)).toBe('1/10');
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});
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it('should handle repeating decimals gracefully', () => {
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expect(dec2Frac(0.333333)).toBe('1/3');
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expect(dec2Frac(0.666666)).toBe('2/3');
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});
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});
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describe('fracToDec', () => {
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it('should convert mixed fraction to decimal', () => {
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expect(fracToDec('1 1/4')).toBeCloseTo(1.25);
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expect(fracToDec('2 1/2')).toBeCloseTo(2.5);
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expect(fracToDec('3 3/4')).toBeCloseTo(3.75);
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});
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it('should convert fraction without whole part to decimal', () => {
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expect(fracToDec('3/4')).toBeCloseTo(0.75);
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expect(fracToDec('1/2')).toBeCloseTo(0.5);
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expect(fracToDec('1/10')).toBeCloseTo(0.1);
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});
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it('should convert whole number fraction', () => {
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expect(fracToDec('4 0/1')).toBeCloseTo(4);
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expect(fracToDec('0/1')).toBeCloseTo(0);
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});
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it('should handle zero correctly', () => {
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expect(fracToDec('0/1')).toBeCloseTo(0);
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expect(fracToDec('0 0/1')).toBeCloseTo(0);
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});
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});
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});
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