Add test cases for single-digit card

Author: russom-g

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

@@ -8,7 +8,33 @@ import { getCardValue } from "../implement/3-get-card-value.js";
 test("Valid single-digit card", () => {
   assert.equal(getCardValue("9♠"), 9);
 });
+test("Valid single-digit card", () => {
+  assert.equal(getCardValue("8♥"), 8);
+});
+test("Valid single-digit card", () => {
+  assert.equal(getCardValue("7♣"), 7);
+});
+test("Valid single-digit card", () => {
+  assert.equal(getCardValue("6♦"), 6);
+});
+test("Valid single-digit card", () => {
+  assert.equal(getCardValue("5♥"), 5);
+});
+test("Valid single-digit card", () => {
+  assert.equal(getCardValue("4♦"), 4);
+});
+test("Valid single-digit card", () => {
+  assert.equal(getCardValue("3♠"), 3);
+});
+test("Valid single-digit card", () => {
+  assert.equal(getCardValue("2♣"), 2);
+});
+
 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"
+  );
 });
 // TODO: What other invalid card cases can you think of?