Completed 2-is-proper-fraction.js exercise

Author: A-Moiz

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

@@ -10,6 +10,8 @@
 function isProperFraction(numerator, denominator) {
   if (numerator < denominator) {
     return true;
+  } else {
+    return false;
   }
 }
 
@@ -47,13 +49,29 @@ assertEquals(improperFraction, false);
 // Explanation: The fraction -4/7 is a proper fraction because the absolute value of the numerator (4) is less than the denominator (7). The function should return true.
 const negativeFraction = isProperFraction(-4, 7);
 // ====> complete with your assertion
+assertEquals(negativeFraction, true);
 
 // Equal Numerator and Denominator check:
 // Input: numerator = 3, denominator = 3
 // target output: false
 // Explanation: The fraction 3/3 is not a proper fraction because the numerator is equal to the denominator. The function should return false.
 const equalFraction = isProperFraction(3, 3);
 // ====> complete with your assertion
+assertEquals(equalFraction, false);
 
 // Stretch:
 // What other scenarios could you test for?
+
+// Zero Numerator check:
+// Input: numerator = 0, denominator = 5
+// target output: true
+// Explanation: The fraction 0/5 is a proper fraction because the numerator is less than the denominator.
+const zeroNumerator = isProperFraction(0, 5);
+assertEquals(zeroNumerator, true);
+
+// Zero Denominator check:
+// Input: numerator = 5, denominator = 0
+// target output: false
+// Explanation: The fraction 5/0 is undefined because division by zero is not allowed.
+const zeroDenominator = isProperFraction(5, 0);
+assertEquals(zeroDenominator, false);