Update tests cases with negative numbers.

Author: russom-g

implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js

@@ -23,6 +23,11 @@ test(`should return true for very small denominator proper fraction`, () => {
   expect(isProperFraction(1, 1000000)).toEqual(true);
 });
 
+test(`should return false for negative denominator improper fraction`, () => {
+  expect(isProperFraction(2, -9)).toEqual(true);
+});
+
+
 // Improper fractions
 test(`should return false for very small denominator proper fraction`, () => {
   expect(isProperFraction(1.2, 1.1)).toEqual(false);
@@ -48,10 +53,6 @@ test(`should return false for both negative improper fraction`, () => {
   expect(isProperFraction(-4, -4)).toEqual(false);
 });
 
-test(`should return false for negative denominator improper fraction`, () => {
-  expect(isProperFraction(2, -9)).toEqual(false);
-});
-
 test(`should return true for negative numerator proper fraction`, () => {
   expect(isProperFraction(-9, 1)).toEqual(false);
 });