sprint 3 task 1 exercise 3 part 1 completed

Author: burhan-mustafa

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

@@ -22,7 +22,46 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
+  const suit = card.replaceAll(/[\w\d\s]/g, "");
+  const value = card.replaceAll(/[^\w\d\s]/g, "");
+  const face = ["J", "Q", "K"];
+  const validSuits = ["♠", "♥", "♦", "♣"];
+  const validValue = [
+    "A",
+    "2",
+    "3",
+    "4",
+    "5",
+    "6",
+    "7",
+    "8",
+    "9",
+    "10",
+    "J",
+    "Q",
+    "K",
+  ];
+
+  if (
+    !validSuits.includes(suit) ||
+    !validValue.includes(value) ||
+    card !== value + suit
+  ) {
+    throw new Error("Invalid card");
+  }
+
+  if (validSuits.includes(suit)) {
+    switch (true) {
+      case Number(value) <= 10 && Number(value) >= 2:
+        return Number(value);
+      case value === "A":
+        return 11;
+      case face.includes(value):
+        return 10;
+    }
+  }
+
+  return "Invalid card";
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -39,7 +78,23 @@ function assertEquals(actualOutput, targetOutput) {
 
 // TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
 // Examples:
-assertEquals(getCardValue("9♠"), 9);
+
+// Test number cards
+assertEquals(getCardValue("2♠"), 2);
+assertEquals(getCardValue("5♥"), 5);
+assertEquals(getCardValue("9♦"), 9);
+assertEquals(getCardValue("10♣"), 10);
+
+// Test aces
+assertEquals(getCardValue("A♠"), 11);
+assertEquals(getCardValue("A♥"), 11);
+assertEquals(getCardValue("A♦"), 11);
+assertEquals(getCardValue("A♣"), 11);
+
+// Test face cards
+assertEquals(getCardValue("J♠"), 10);
+assertEquals(getCardValue("Q♥"), 10);
+assertEquals(getCardValue("K♦"), 10);
 
 // Handling invalid cards
 try {
@@ -52,3 +107,43 @@ try {
 }
 
 // What other invalid card cases can you think of?
+
+function errorThrown(card) {
+  try {
+    getCardValue(card);
+    console.error(`Expected "${card}" to throw an error 😢`);
+  } catch (error) {
+    console.log(`"${card}" Error thrown for invalid card 🎉`);
+  }
+}
+
+// Missing a suit
+errorThrown("9");
+
+// Missing a rank
+errorThrown("♠");
+
+// Invalid rank
+errorThrown("1♠");
+errorThrown("11♠");
+errorThrown("Z♠");
+
+// Invalid suit
+errorThrown("9X");
+
+// Suit and rank in the wrong order
+errorThrown("♠9");
+
+// Extra characters
+errorThrown("9♠hello");
+errorThrown("A♠♠");
+
+// Spaces
+errorThrown("9 ♠");
+errorThrown(" 9♠");
+errorThrown("9♠ ");
+
+// Empty or incorrectly capitalised
+errorThrown("");
+errorThrown("a♠");
+errorThrown("j♠");