add tests for getCardValue

Author: Vaidah-dev

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

@@ -3,14 +3,42 @@ import test from "node:test";
 
 import { getCardValue } from "../implement/3-get-card-value.js";
 
-// TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
-
 test("Valid single-digit card", () => {
   assert.equal(getCardValue("9♠"), 9);
 });
 
 test("Arbitrary non-card string", () => {
-  assert.throws(() => getCardValue("invalid"), /Expected a number followed by a suit, but got "invalid"/, "Expected clear error");
+  assert.throws(
+    () => getCardValue("invalid"),
+    /Expected a number followed by a suit, but got "invalid"/,
+    "Expected clear error"
+  );
+});
+
+test("Ace returns 11", () => {
+  assert.equal(getCardValue("A♠"), 11);
+  assert.equal(getCardValue("A♥"), 11);
+});
+
+test("Face cards return 10", () => {
+  assert.equal(getCardValue("J♠"), 10);
+  assert.equal(getCardValue("Q♥"), 10);
+  assert.equal(getCardValue("K♦"), 10);
+});
+
+test("Number cards return their value", () => {
+  assert.equal(getCardValue("2♣"), 2);
+  assert.equal(getCardValue("5♥"), 5);
+  assert.equal(getCardValue("7♠"), 7);
+  assert.equal(getCardValue("10♦"), 10);
 });
 
-// TODO: What other invalid card cases can you think of?
+test("Invalid cards throw an error", () => {
+  assert.throws(() => getCardValue("A"));
+  assert.throws(() => getCardValue("♠"));
+  assert.throws(() => getCardValue("11♠"));
+  assert.throws(() => getCardValue("1♠"));
+  assert.throws(() => getCardValue("hello"));
+  assert.throws(() => getCardValue(""));
+  assert.throws(() => getCardValue("A♠♠"));
+});