London|ITP-Jan-2026|Ping Wang|Sprint 3|1-implement-and -rewrite -tests

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

@@ -15,7 +15,12 @@
 // execute the code to ensure all tests pass.
 
 function getAngleType(angle) {
-  // TODO: Implement this function
+   if (angle === 90) return "Right angle";
+   if (angle < 90) return "Acute angle";
+   if (90 <angle && angle<180 ) return "Obtuse angle";
+   if (angle === 180) return "Straight angle";
+   if (180<angle && angle<360) return "Reflex angle";
+   return "Invalid angle"
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -35,3 +40,25 @@ function assertEquals(actualOutput, targetOutput) {
 // Example: Identify Right Angles
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+
+// Case 2: Identify Acute Angles:
+const acute = getAngleType(45);
+assertEquals(acute, "Acute angle");
+
+// Case 3: Identify Obtuse Angles:
+const obtuse = getAngleType(120);
+assertEquals(obtuse, "Obtuse angle");
+
+// Case 4: Identify Straight Angles:
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle");
+
+// Case 5: Identify Reflex Angles:
+const reflex = getAngleType(300);
+assertEquals(reflex, "Reflex angle");
+
+//case 6: Identify Invalid angle:
+assertEquals(getAngleType(367),"Invalid angle");
+
+//case 7: Identify boundary angle:
+assertEquals(getAngleType(1), "Acute angle");

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

@@ -11,7 +11,7 @@
 // execute the code to ensure all tests pass.
 
 function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  return Math.abs(numerator) < Math.abs(denominator)
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
@@ -31,3 +31,27 @@ function assertEquals(actualOutput, targetOutput) {
 
 // Example: 1/2 is a proper fraction
 assertEquals(isProperFraction(1, 2), true);
+
+//Case 2: 5/5 is not a proper fraction
+assertEquals(isProperFraction(5,5), false);
+
+//Case 3: (-3)/(-5) is a proper fraction
+assertEquals(isFinite(-3,-5), true);
+
+//Case 4: (-4)/6 is a proper fraction
+assertEquals(isProperFraction(-4,6),true);
+
+//case 5: 5/(-8) is a proper fraction
+assertEquals(isProperFraction(5,-8), true);
+
+//case 6: 9/7 is not a proper fraction
+assertEquals(isProperFraction(9,7), false);
+
+//case 7: 7/0 is not a proper fraction
+assertEquals(isProperFraction(7,0), false);
+
+//case 8: 0/6 is a proper fraction
+assertEquals(isProperFraction(0,6), true);
+
+//case 9: 0/-8 is a proper fraction
+assertEquals(isProperFraction(0,-8), true);

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 +53,44 @@ function assertEquals(actualOutput, targetOutput) {
 }
 
 // TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
-// Examples:
+// Examples 1 numbers:
+// Examples 1 numbers:
 assertEquals(getCardValue("9♠"), 9);
+assertEquals(getCardValue("5♣"), 5);
+
+//Examples  A:
+assertEquals(getCardValue("A♦"), 11)
 
-// Handling invalid cards
-try {
-  getCardValue("invalid");
+//Examples J Q K:, 
+assertEquals(getCardValue("Q♥"), 10)
+assertEquals(getCardValue("K♥"), 10)
+
+//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?

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

@@ -14,7 +14,24 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test ('should return "Right angle" when angle ===90',() => {
+  expect(getAngleType(90)).toEqual("Right angle");
+})
 // Case 3: Obtuse angles
+test ('should return "Obtuse angle" when (90<angle && angle <180)',() => {
+  expect(getAngleType(135)).toEqual("Obtuse angle");
+})
 // Case 4: Straight angle
+test ('should return "Straight angle" when angle ===180',() => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+})
+
 // Case 5: Reflex angles
+test ('should return "Obtuse angle" when (180<angle && angle <360)',() => {
+  expect(getAngleType(275)).toEqual("Reflex angle");
+})
+
 // Case 6: Invalid angles
+test('should return "Invalid angle"when (angle>=360)', ()=> {
+  expect(getAngleType(360)).toEqual("Invalid angle");
+})

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

@@ -4,7 +4,31 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 
 // TODO: Write tests in Jest syntax to cover all combinations of positives, negatives, zeros, and other categories.
 
-// Special case: numerator is zero
+/// Special case: denominator is zero
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+
+//case:absolute numerator is bigger than absolute denominator
+test ('should return false when numerator absolute is bigger than denominator absolute',() => {
+  expect(isProperFraction(5, -4)).toEqual(false);
+})
+
+//case:numerator is the same as denominator
+test('should return false if numerator is the same as denominator', () =>{
+  expect(isProperFraction(-9,-9)).toEqual(false)
+})
+
+//case: absolute numerator is less than absolute denominator
+test ('should return true when numerator absolute is less than denominator absolute',() => {
+  expect(isProperFraction(3,-8)).toEqual(true);
+})
+
+//case: numerator is zero
+test(`should return true when nominator is zero`, () => {
+  expect(isProperFraction(0,-3)).toEqual(true);
+});
+
+
+
+

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

@@ -14,7 +14,23 @@ test(`Should return 11 when given an ace card`, () => {
 //   Face Cards (J, Q, K)
 //   Invalid Cards
 
+// Case 2 : Number(2-10)
+test('should return the exact number when given an number card', () =>{
+  expect(getCardValue("5♠")).toEqual(5);
+})
+
+//case 3 : face card(J,Q,K)
+test('should return number when given face card', () =>{
+  expect(getCardValue("K♠")).toEqual(10);
+})
+
+// case 4: Invalid cards
+test('throws new Error', () => {
+  expect(() => getCardValue("9**")).toThrow("Invalid card");
+});
+
 // To learn how to test whether a function throws an error as expected in Jest,
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
 
+