Implement isProperFraction with full test coverage

Author: khalidbih

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

@@ -11,8 +11,13 @@
 // execute the code to ensure all tests pass.
 
 function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  if (Math.abs(numerator) < Math.abs(denominator)) {
+    return true;
+  } else {
+    return false;
+  }
 }
+// TODO: Implement this function
 
 // The line below allows us to load the isProperFraction function into tests in other files.
 // This will be useful in the "rewrite tests with jest" step.
@@ -31,3 +36,13 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+
+assertEquals(isProperFraction(3, 2), false);
+
+assertEquals(isProperFraction(2, 2), false);
+
+assertEquals(isProperFraction(-1, 2), true);
+
+assertEquals(isProperFraction(1, -2), true);
+
+assertEquals(isProperFraction(-1, -2), true);