Implement test to all cards.

Author: tasleemadedokun

Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js

@@ -11,8 +11,25 @@ test(`Should return 11 when given an ace card`, () => {
 
 // Suggestion: Group the remaining test data into these categories:
 //   Number Cards (2-10)
+test("Should return the correct value for number cards", () => {
+  expect(getCardValue("2♠")).toEqual(2);
+  expect(getCardValue("10♦")).toEqual(10);
+});
+
+
 //   Face Cards (J, Q, K)
+test("Should return 10 for face cards (J, Q, K)", () => {
+  expect(getCardValue("J♠")).toEqual(10);
+  expect(getCardValue("Q♠")).toEqual(10);
+  expect(getCardValue("K♠")).toEqual(10);
+});
+
+
 //   Invalid Cards
+test("Should throw an error for invalid cards", () => {
+  expect(() => getCardValue(null)).toThrow();
+  expect(() => getCardValue(undefined)).toThrow();
+})
 
 // To learn how to test whether a function throws an error as expected in Jest,
 // please refer to the Jest documentation: