completed the jest test for 2-proper-fraction-test.js

Author: leerogerfn

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

@@ -4,5 +4,17 @@ import { isProperFraction } from "../implement/2-is-proper-fraction.js";
 
 // Special case: numerator is zero
 test(`should return false when denominator is zero`, () => {
-  expect(isProperFraction(1, 0)).toEqual(false);
+  expect(isProperFraction(1, 0)).toEqual("false");
 });
+
+test(`should return true when denominator is more than numerator`, () => {
+  expect(isProperFraction(1, 4)).toEqual("true");
+});
+
+test(`should return false when denominator is less than numerator`, () => {
+  expect(isProperFraction(4, 1)).toEqual("false");
+});
+
+test(`should true when denominator and numerator are negative`, () => {
+  expect(isProperFraction(-5, -2)).toEqual("true");
+});