add Jest tests for getCardValue

Author: Vaidah-dev

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

@@ -1,18 +1,28 @@
 import { getCardValue } from "../implement/3-get-card-value.js";
 
-// TODO: Write tests in Jest syntax to cover all possible outcomes.
-
-// Case 1: Ace (A)
 test(`Should return 11 when given an ace card`, () => {
   expect(getCardValue("A♠")).toEqual(11);
+  expect(getCardValue("A♥")).toEqual(11);
 });
 
-// Suggestion: Group the remaining test data into these categories:
-//   Number Cards (2-10)
-//   Face Cards (J, Q, K)
-//   Invalid Cards
+test(`Should return the number for number cards`, () => {
+  expect(getCardValue("2♣")).toEqual(2);
+  expect(getCardValue("5♥")).toEqual(5);
+  expect(getCardValue("7♠")).toEqual(7);
+  expect(getCardValue("10♦")).toEqual(10);
+});
 
-// To learn how to test whether a function throws an error as expected in Jest,
-// please refer to the Jest documentation:
-// https://jestjs.io/docs/expect#tothrowerror
+test(`Should return 10 for face cards`, () => {
+  expect(getCardValue("J♠")).toEqual(10);
+  expect(getCardValue("Q♥")).toEqual(10);
+  expect(getCardValue("K♦")).toEqual(10);
+});
 
+test(`Should throw for invalid cards`, () => {
+  expect(() => getCardValue("A")).toThrow();
+  expect(() => getCardValue("♠")).toThrow();
+  expect(() => getCardValue("11♠")).toThrow();
+  expect(() => getCardValue("hello")).toThrow();
+  expect(() => getCardValue("")).toThrow();
+  expect(() => getCardValue("A♠♠")).toThrow();
+});