Refactor isProperFraction to use absolute values for numerator and denominator; update tests for negative fractions

Author: zilinskyte

Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js

@@ -1,5 +1,5 @@
 function isProperFraction(numerator, denominator) {
-  if (numerator < denominator) {
+  if (Math.abs(numerator) < Math.abs(denominator)) {
     return true;
   } else {
     return false;

Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js

@@ -4,6 +4,7 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 
 test("should return true for a proper fraction", () => {
   expect(isProperFraction(2, 3)).toEqual(true);
+  expect(isProperFraction(4, -5)).toEqual(true);
 });
 
 // Case 2: Identify Improper Fractions:
@@ -12,7 +13,7 @@ test("should return false for an improper fraction", () => {
 });
 
 // Case 3: Identify Negative Fractions:
-test("should return false for a negative fraction", () => {
+test("should return true for a negative fraction", () => {
   expect(isProperFraction(-3, 4)).toEqual(true);
 });