Update: test isProperFraction function is correct and reintroduce usage examples

Author: SuWebOnes

Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js

@@ -1,11 +1,27 @@
-const isProperFraction = require("./2-is-proper-fraction");
+function isProperFraction(numerator, denominator) {
+  // Case 1: Check for zero denominator (undefined)
+  if (denominator === 0) return false;
 
-test("should return true for a proper fraction", () => {
-  expect(isProperFraction(2, 3)).toEqual(true);
-});
+  // Case 2: Check for negative values (numerator or denominator)
+  if (numerator < 0 || denominator < 0) return false;
 
-// Case 2: Identify Improper Fractions:
+  // Case 3: Check for equal numerator and denominator
+  if (numerator === denominator) return false;
 
-// Case 3: Identify Negative Fractions:
+  // Case 4: Check for proper fraction (numerator < denominator)
+  return numerator < denominator;
+}
+module.exports = isProperFraction;
+// usage examples
+console.log(isProperFraction(2, 3)); // true
+console.log(isProperFraction(5, 3)); // false
+console.log(isProperFraction(3, 3)); // false
+console.log(isProperFraction(-2, 3)); // false
+console.log(isProperFraction(2, -3)); // false
+console.log(isProperFraction(0, 5)); // true (0 < 5)
+console.log(isProperFraction(2, 2)); // false
 
-// Case 4: Identify Equal Numerator and Denominator:
+// Test cases for the isProperFraction function
+// test("should return true for a proper fraction", () => {
+//   expect(isProperFraction(2, 3)).toEqual(true);
+// });