Update proper fraction Jest tests

Author: Dipa-Sarker

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

@@ -25,4 +25,10 @@ test(`should return false when numerator is negative`, () => {
 });
 test(`should return false when denominator is negative`, () => {
   expect(isProperFraction(1, -1)).toEqual(false);
+});
+test(`should return true when numerator is negative but not the same number as denominator`, () => {
+  expect(isProperFraction(-1, 2)).toEqual(true);
+});
+test(`should return true when denominator is negative but not the same number as denominator`, () => {
+  expect(isProperFraction(1, -2)).toEqual(true);
 });