wrote the code for 2-is-proper-function of sprint-3 and test cases

Author: fayaz551

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

@@ -12,6 +12,16 @@
 
 function isProperFraction(numerator, denominator) {
   // TODO: Implement this function
+  if (denominator === 0) {
+    return false;
+  }
+  if (numerator < 0 && denominator < 0) {
+    return Math.abs(numerator) < Math.abs(denominator);
+  }
+  if (numerator < 0 || denominator < 0) {
+    return false;
+  }
+  return numerator < denominator;
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -31,3 +41,10 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(2, 1), false);
+assertEquals(isProperFraction(0, 1), true);
+assertEquals(isProperFraction(-1, 2), false);
+assertEquals(isProperFraction(1, -2), false);
+assertEquals(isProperFraction(-1, -2), false);
+assertEquals(isProperFraction(3, 4), true);
+assertEquals(isProperFraction(4, 3), false);