Sprint 3: Implement functions and rewrite tests in Jest

Author: RomanSanaye

Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js

@@ -6,7 +6,8 @@
 // - "Obtuse angle" for angles greater than 90° and less than 180°
 // - "Straight angle" for exactly 180°
 // - "Reflex angle" for angles greater than 180° and less than 360°
-// - "Invalid angle" for angles outside the valid range.
+// - "(angle >= 0 || angle <= 90){
+    // Invalid angle" for angles outside the valid range.
 
 // Assumption: The parameter is a valid number. (You do not need to handle non-numeric inputs.)
 
@@ -15,7 +16,17 @@
 // execute the code to ensure all tests pass.
 
 function getAngleType(angle) {
-  // TODO: Implement this function
+  if(angle > 0 && angle < 90){
+    return "Acute angle";
+  }else if(angle === 90){
+    return "Right angle";
+  }else if(angle > 90 && angle < 180){
+    return "Obtuse angle"
+  }else if(angle === 180){
+    return "Straight angle";
+  }else if(angle > 180 && angle < 360){
+    return "Reflex angle";
+  }else return "Invalid angle";
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -33,5 +44,19 @@ function assertEquals(actualOutput, targetOutput) {
 
 // TODO: Write tests to cover all cases, including boundary and invalid cases.
 // Example: Identify Right Angles
+const acute = getAngleType(45)
+assertEquals(acute, "Acute angle");
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+const obtuse = getAngleType(110)
+assertEquals(obtuse, "Obtuse angle");
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle");
+const reflex = getAngleType(250);
+assertEquals(reflex, "Reflex angle");
+const invalid = getAngleType(380);
+assertEquals(invalid, "Invalid angle");
+const invalid2 = getAngleType(0);
+assertEquals(invalid2, "Invalid angle");
+const invalid3 = getAngleType(-10);
+assertEquals(invalid3, "Invalid angle");

Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js

@@ -12,6 +12,11 @@
 
 function isProperFraction(numerator, denominator) {
   // TODO: Implement this function
+  if(numerator <= 0 || denominator <= 0){
+    return false;
+  }else if(numerator < denominator){
+    return true;
+  }else return false;
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -20,8 +25,7 @@ module.exports = isProperFraction;
 
 // Here's our helper again
 function assertEquals(actualOutput, targetOutput) {
-  console.assert(
-    actualOutput === targetOutput,
+  console.assert(actualOutput === targetOutput,
     `Expected ${actualOutput} to equal ${targetOutput}`
   );
 }
@@ -30,4 +34,10 @@ function assertEquals(actualOutput, targetOutput) {
 // What combinations of numerators and denominators should you test?
 
 // Example: 1/2 is a proper fraction
-assertEquals(isProperFraction(1, 2), true);
+assertEquals(isProperFraction(1, 2), "true");
+assertEquals(isProperFraction(3, 2), "false");
+assertEquals(isProperFraction(1, 0), "false");
+assertEquals(isProperFraction(8, 9), "true");
+assertEquals(isProperFraction(0, 1), "false");
+assertEquals(isProperFraction(-4, 1), "false");
+assertEquals(isProperFraction(2, -4), "false");

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

@@ -22,9 +22,25 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
-}
+   if (typeof card !== "string") {
+    throw new Error("Invalid card");
+  }
+  let rank = card.slice(0, -1); // Get everything except the last character
+  let suit = card.slice(-1);    //  Get the last character
+  
+  const validSuits = ["♠", "♥", "♦", "♣"]; // check if suit is valid
+  if (!validSuits.includes(suit)) {
+    throw new Error("Invalid card");
+  }
 
+  if (rank === "A"){
+    return 11;
+  }else if(rank.match(/J|Q|K/)){
+    return 10;
+  }else if(rank.match(/^(10|[2-9])$/)){
+    return Number(rank);
+  }else throw new Error("Invalid card");
+}
 // 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.
 module.exports = getCardValue;
@@ -36,17 +52,48 @@ function assertEquals(actualOutput, targetOutput) {
     `Expected ${actualOutput} to equal ${targetOutput}`
   );
 }
-
 // TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
-// Examples:
 assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("A♦"), 11);
+assertEquals(getCardValue("J♣"), 10);
+assertEquals(getCardValue("Q♥"), 10);
+assertEquals(getCardValue("K♠"), 10);
+assertEquals(getCardValue("3♦"), 3);
 
-// Handling invalid cards
 try {
-  getCardValue("invalid");
+  getCardValue("J");
 
-  // This line will not be reached if an error is thrown as expected
+  // The below line will not be reached if an error is thrown as expected
   console.error("Error was not thrown for invalid card");
-} catch (e) {}
-
+} catch (e) {
+  console.log('Test passed for "J": caught error ->', e.message);
+}
 // What other invalid card cases can you think of?
+
+try {
+  getCardValue("9X");   // invalid suit
+  console.error('Test failed for "9X": error was not thrown');
+} catch (e) {
+  console.log('Test passed for "9X": caught error ->', e.message);
+}
+
+try {
+  getCardValue("1♠");   // invalid rank
+  console.error('Test failed for "1♠": error was not thrown');
+} catch (e) {
+  console.log('Test passed for "1♠": caught error ->', e.message);
+}
+
+try {
+  getCardValue("0♥");   // invalid rank
+  console.error('Test failed for "0♥": error was not thrown');
+} catch (e) {
+  console.log('Test passed for "0♥": caught error ->', e.message);
+}
+
+try {
+  getCardValue("ABC");  // completely wrong format
+  console.error('Test failed for "ABC": error was not thrown');
+} catch (e) {
+  console.log('Test passed for "ABC": caught error ->', e.message);
+}