complete code

Author: pathywang

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

@@ -22,8 +22,23 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
-}
+  const validSuits = ["♠", "♥", "♦", "♣"];
+  const validRanks = ["A", "2", "3", "4", "5", "6", "7", "8", "9", "10", "J", "Q", "K"];
+
+  const suit = card.slice(-1);
+  const rank = card.slice(0, -1);
+
+  
+  if (!validSuits.includes(suit) || !validRanks.includes(rank)) {
+    throw new Error("Invalid card");
+  }
+
+  if (rank === "A") return 11;
+  if (["J", "Q", "K"].includes(rank)) return 10;
+
+  return Number(rank);
+} 
+
 
 // The line below allows us to load the getCardValue function into tests in other files.
 // This will be useful in the "rewrite tests with jest" step.
@@ -38,15 +53,47 @@ function assertEquals(actualOutput, targetOutput) {
 }
 
 // TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
-// Examples:
+// Examples 1 numbers:
 assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("5♣"), 5);
+
+//Examples  A:
+assertEquals(getCardValue("A♦"), 11)
+
+//Examples J Q K:, 
+assertEquals(getCardValue("Q♥"), 10)
+assertEquals(getCardValue("K♥"), 10)
 
-// Handling invalid cards
-try {
-  getCardValue("invalid");
+//Examples invalid numbers:
+assertThrow(()=>getCardValue("1♥"))
+assertThrow(()=>getCardValue("11♥"))
+
+//Examples invalid suit:
+assertThrow(()=>getCardValue("A*"))
+
+//Examples missing rank or suit:
+assertThrow(()=>getCardValue("♥"))
+assertThrow(()=>getCardValue("5"))
+
+//Example extra suit:
+assertThrow(()=>getCardValue("Q♠♠"))
+
+
+function assertThrow(fn){
+try { (fn)
+  // we try to run this function, if it throws, stop running this bit and run the catch below
 
   // This line will not be reached if an error is thrown as expected
   console.error("Error was not thrown for invalid card");
-} catch (e) {}
+} catch (error) {
+  // if the above code throws, we catch the error here, that stops the whole program crashing
+  console.log('there was an error getting card value!',error)
+}}
+
+console.log(' we finished running getcardvalue')
 
 // What other invalid card cases can you think of?
+
+//Examples wrong type:
+assertThrow(()=>getCardValue("null"))
+assertThrow(()=>getCardValue("42"))