rewrite tests with jests complete

Author: anitahy73

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

@@ -8,3 +8,21 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+// proper fractions
+test(`should return true when denominator is higher than numerator`, () => {
+  expect(isProperFraction(0, 1)).toEqual(true);
+  expect(isProperFraction(2, 7)).toEqual(true);
+  expect(isProperFraction(89, 101)).toEqual(true);
+});
+// Special case: numerator or denominator is negative, we consider the absolute values for fractions so ignore the negative signs
+test(`should return true when negative/positive numerator is less than the positive/negative denominator`, () => {
+  expect(isProperFraction(-20, -30)).toEqual(true);
+  expect(isProperFraction(-1, 2)).toEqual(true);
+  expect(isProperFraction(58, -68)).toEqual(true);
+});
+// Special case: numerator or denominator is negative, we consider the absolute values for fractions so ignore the negative signs
+test(`should return false when negative/positive numerator is greater than the positive/negative denominator`, () => {
+  expect(isProperFraction(-50, 10)).toEqual(false);
+  expect(isProperFraction(100, 2)).toEqual(false);
+  expect(isProperFraction(-1, -0)).toEqual(false);
+});