Added tests for 0 with negative denominator or numerator

Author: HM-127BTY

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

@@ -42,3 +42,11 @@ test("Improper fraction with negative number: -Numerator > Denominator", () => {
 test("Proper fraction with negative numbers: -Numerator < -Denominator", () => {
   assert.equal(isProperFraction(-1, -2), true);
 });
+
+test("Proper fraction with negative Numerator and Zero: -Numerator < 0", () => {
+  assert.equal(isProperFraction(-1, 0), false);
+});
+
+test("Proper fraction with Zero and negative Denominator: 0 < -Denominator", () => {
+  assert.equal(isProperFraction(0, -2), false);
+});

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

@@ -60,3 +60,17 @@ test(`should return false when: -Numerator > Denominator`, () => {
   expect(isProperFraction(-5, 4)).toEqual(false);
   expect(isProperFraction(-20, 10)).toEqual(false);
 });
+
+// Special case: Improper fraction with negative Numerator and 0: -Numerator > 0
+test(`should return false when: -Numerator > Denominator`, () => {
+  expect(isProperFraction(-2, 0)).toEqual(false);
+  expect(isProperFraction(-5, 0)).toEqual(false);
+  expect(isProperFraction(-20, 0)).toEqual(false);
+});
+
+// Special case: Improper fraction with 0 and negative Denominator: 0 > -Denominator
+test(`should return false when: -Numerator > Denominator`, () => {
+  expect(isProperFraction(0, -1)).toEqual(false);
+  expect(isProperFraction(0, -4)).toEqual(false);
+  expect(isProperFraction(0, -10)).toEqual(false);
+});