Added tests for isProperFraction covering various cases including zero, negative, decimal, and large numbers

Author: ashaahmed7

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

@@ -8,3 +8,65 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+
+test("should return true when numerator is zero and denominator is non-zero", () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+
+test("should return false when both numerator and denominator are zero", () => {
+  expect(isProperFraction(0, 0)).toEqual(false);
+});
+
+// Special case: Identify proper Fractions:
+test("should return true for proper fraction", () => {
+  expect(isProperFraction(2, 3)).toEqual(true);
+});
+
+// Special case: Identify Negative Fractions:
+test("should return true for proper negative fraction", () => {
+  expect(isProperFraction(-3, 6)).toEqual(true);
+});
+
+test("should return false for improper negative fraction", () => {
+  expect(isProperFraction(-5, 2)).toEqual(false);
+});
+
+test("should return true for proper fraction with negative denominator", () => {
+  expect(isProperFraction(2, -5)).toEqual(true);
+});
+
+test("should return false for improper fraction with negative denominator", () => {
+  expect(isProperFraction(7, -3)).toEqual(false);
+});
+
+// Special case: Identify Equal Numerator and Denominator:
+test("should return false for improper fraction (numerator === denominator)", () => {
+  expect(isProperFraction(3, 3)).toEqual(false);
+});
+
+// Special case: Identify both Numerator and Denominator as negative
+test("should return true when both numerator and denominator are negative and proper", () => {
+  expect(isProperFraction(-2, -5)).toEqual(true);
+});
+
+test("should return false when both numerator and denominator are negative and improper", () => {
+  expect(isProperFraction(-6, -3)).toEqual(false);
+});
+
+// Special case: Identify both Numerator and Denominator as decimal
+test("should return true for proper decimal fractions", () => {
+  expect(isProperFraction(1.5, 2.5)).toEqual(true);
+});
+
+test("should return false for improper decimal fractions", () => {
+  expect(isProperFraction(2.5, 1.5)).toEqual(false);
+});
+
+// Special case: Identify both Numerator and Denominator as large numbers
+test("should return true for large proper fractions", () => {
+  expect(isProperFraction(100, 1000)).toEqual(true);
+});
+
+test("should return false for large improper fractions", () => {
+  expect(isProperFraction(1000, 100)).toEqual(false);
+});