test: rewrite and expand tests for getCardValue function with success and error cases

Author: Grajales-K

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

@@ -4,11 +4,6 @@ const getCardValue = require("../implement/3-get-card-value");
 
 // 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);
-});
-
 // Suggestion: Group the remaining test data into these categories:
 //   Number Cards (2-10)
 //   Face Cards (J, Q, K)
@@ -18,3 +13,43 @@ test(`Should return 11 when given an ace card`, () => {
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
 
+describe("getCardValue", () => {
+
+  // Group 1: success cases (Valid cards)
+  test("should return 11 when given an Ace (A)", () => {
+    expect(getCardValue("A♠")).toBe(11);
+    expect(getCardValue("A♥")).toBe(11);
+  });
+
+  test("should return 10 when given a face card (J, Q, K)", () => {
+    expect(getCardValue("J♣")).toBe(10);
+    expect(getCardValue("Q♦")).toBe(10);
+    expect(getCardValue("K♠")).toBe(10);
+  });
+
+  test("should return the numeric value for number cards (2-10)", () => {
+    expect(getCardValue("2♥")).toBe(2);
+    expect(getCardValue("7♦")).toBe(7);
+    expect(getCardValue("10♣")).toBe(10);
+  });
+
+  // Group 2: error cases (Invalid cards)
+  describe("Invalid cards", () => {
+    test("should throw an error for invalid card length or missing components", () => {
+      expect(() => getCardValue("A")).toThrow("Invalid card");
+      expect(() => getCardValue("100♥")).toThrow("Invalid card");
+      expect(() => getCardValue("")).toThrow("Invalid card");
+    });
+
+    test("should throw an error for an invalid suit emoji", () => {
+      expect(() => getCardValue("A🌸")).toThrow("Invalid card suit");
+      expect(() => getCardValue("10X")).toThrow("Invalid card suit");
+    });
+
+    test("should throw an error for an invalid rank", () => {
+      expect(() => getCardValue("1♥")).toThrow("Invalid card rank");
+      expect(() => getCardValue("15♦")).toThrow("Invalid card rank");
+      expect(() => getCardValue("Z♠")).toThrow("Invalid card rank");
+    });
+  });
+});