Implement isProperFraction function and added tests for various fraction cases

Author: ashaahmed7

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

@@ -12,6 +12,13 @@
 
 function isProperFraction(numerator, denominator) {
   // TODO: Implement this function
+  if (denominator <= 0) {
+    return false;
+  }
+  if (numerator < denominator && numerator >= 0) {
+    return true;
+  }
+  return false;
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -31,3 +38,27 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+
+// Example: 3/5 is a proper fraction
+assertEquals(properFraction(3 / 5), true);
+
+// Example: 1/100 is a positive fraction
+assertEquals(smallFraction(1, 100), true);
+
+// Example: 0/4 is a proper fraction with zero numerator
+assertEquals(zeroNumerator(0, 4), true);
+
+// Example: 7/7 is an improper fraction,
+assertEquals(equalFraction(7, 7), false);
+
+// Example: 8/3 is an improper fraction,
+assertEquals(numeratorLarger(8, 3), false);
+
+// Example: 5/0 is an invalid fraction
+assertEquals(zeroDenominator(5, 0), false);
+
+// Example: 2/-6 is an invalid fraction
+assertEquals(negativeDenominator(2, -6), false);
+
+// Example: -1/4 is an invalid fraction
+assertEquals(negativeNumerator(-1, 4), false);