London|May 2025|Alexandru Pocovnicu|Coursework/sprint 3

Sprint-3/1-key-implement/1-get-angle-type.js

@@ -9,6 +9,10 @@
 
 function getAngleType(angle) {
    if (angle === 90) return "Right angle";
+   if(angle<90) return "Acute angle";
+   if(angle>90 && angle<180) return "Obtuse angle"
+   if(angle===180) return "Straight angle"
+   if (angle>180 && angle<=360) return "Reflex angle"
    // read to the end, complete line 36, then pass your test here
 }
 
@@ -43,14 +47,19 @@ assertEquals(acute, "Acute angle");
 // When the angle is greater than 90 degrees and less than 180 degrees,
 // Then the function should return "Obtuse angle"
 const obtuse = getAngleType(120);
+assertEquals(obtuse,"Obtuse angle")
 // ====> write your test here, and then add a line to pass the test in the function above
 
 // Case 4: Identify Straight Angles:
 // When the angle is exactly 180 degrees,
 // Then the function should return "Straight angle"
 // ====> write your test here, and then add a line to pass the test in the function above
+const straight=getAngleType(180)
+assertEquals(straight,"Straight angle")
 
 // Case 5: Identify Reflex Angles:
 // When the angle is greater than 180 degrees and less than 360 degrees,
 // Then the function should return "Reflex angle"
-// ====> write your test here, and then add a line to pass the test in the function above
+// ====> write your test here, and then add a line to pass the test in the function above
+const reflex=getAngleType(230)
+assertEquals(reflex,"Reflex angle")

Sprint-3/1-key-implement/2-is-proper-fraction.js

@@ -8,7 +8,11 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
+    if (isNaN(numerator) || isNaN(denominator)) return NaN;
+    if (Math.abs(numerator) < Math.abs(denominator)) return true;
+    if(Math.abs(numerator)>Math.abs(denominator)) return false;
+    if(Math.abs(numerator)===Math.abs(denominator)) return false;
+
 }
 
 // here's our helper again
@@ -40,14 +44,21 @@ assertEquals(improperFraction, false);
 // target output: true
 // Explanation: The fraction -4/7 is a proper fraction because the absolute value of the numerator (4) is less than the denominator (7). The function should return true.
 const negativeFraction = isProperFraction(-4, 7);
+assertEquals(negativeFraction,true)
 // ====> complete with your assertion
 
 // Equal Numerator and Denominator check:
 // Input: numerator = 3, denominator = 3
 // target output: false
 // Explanation: The fraction 3/3 is not a proper fraction because the numerator is equal to the denominator. The function should return false.
 const equalFraction = isProperFraction(3, 3);
+assertEquals(equalFraction,false)
 // ====> complete with your assertion
 
 // Stretch:
 // What other scenarios could you test for?
+const notANumber=isProperFraction(NaN,3)
+console.assert(isNaN(notANumber), `Expected NaN, got ${notANumber}`);
+
+const notANumber2 = isProperFraction(3, NaN);
+console.assert(isNaN(notANumber2), `Expected NaN, got ${notANumber2}`);

Sprint-3/1-key-implement/3-get-card-value.js

@@ -8,7 +8,11 @@
 // write one test at a time, and make it pass, build your solution up methodically
 // just make one change at a time -- don't rush -- programmers are deep and careful thinkers
 function getCardValue(card) {
+  let rank=card.slice(0,-1);
     if (rank === "A") return 11;
+    if(rank>=2 && rank<10)return Number(rank);
+    if(rank==="10"|| rank==="J" || rank==="Q" || rank==="K") return 10;
+    else return "Invalid card rank"
 }
 
 // You need to write assertions for your function to check it works in different cases
@@ -33,19 +37,26 @@ assertEquals(aceofSpades, 11);
 // When the function is called with such a card,
 // Then it should return the numeric value corresponding to the rank (e.g., "5" should return 5).
 const fiveofHearts = getCardValue("5♥");
+assertEquals(fiveofHearts,5)
 // ====> write your test here, and then add a line to pass the test in the function above
 
 // Handle Face Cards (J, Q, K):
 // Given a card with a rank of "10," "J," "Q," or "K",
 // When the function is called with such a card,
 // Then it should return the value 10, as these cards are worth 10 points each in blackjack.
+const faceCards = getCardValue("10♥", "J♥", "Q♥", "K♥");
+assertEquals(faceCards,10)
 
 // Handle Ace (A):
 // Given a card with a rank of "A",
 // When the function is called with an Ace,
 // Then it should, by default, assume the Ace is worth 11 points, which is a common rule in blackjack.
+const aceofHeart = getCardValue("A♥");
+assertEquals(aceofHeart, 11);
 
 // Handle Invalid Cards:
 // Given a card with an invalid rank (neither a number nor a recognized face card),
 // When the function is called with such a card,
 // Then it should throw an error indicating "Invalid card rank."
+const invalidCard=getCardValue("B")
+assertEquals(invalidCard,"Invalid card rank")

Sprint-3/2-mandatory-rewrite/1-get-angle-type.js

@@ -1,7 +1,19 @@
 function getAngleType(angle) {
+  if (angle < 0) return "Negative angle";
+  if (angle === 0) return "Not an angle";
+  if (angle > 0 && angle < 90) return "Acute angle";
   if (angle === 90) return "Right angle";
-  // replace with your completed function from key-implement
-
+  if (angle > 90 && angle < 180) return "Obtuse angle";
+  if (angle === 180) return "Straight angle";
+  if (angle > 180 && angle <= 360) return "Reflex angle"; 
+  if (angle >360) return "Revolutional angle";
+
+
+
+
+
+
+  // replace with your completed function from key-implement.
 }
 
 

Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js

@@ -1,24 +1,46 @@
 const getAngleType = require("./1-get-angle-type");
 
-test("should identify right angle (90°)", () => {
+test("should return not an angle (angle=0)", () => {
+  expect(getAngleType(0)).toEqual("Not an angle");
+});
+
+test("should identify right angle (angle=90°)", () => {
   expect(getAngleType(90)).toEqual("Right angle");
 });
 
 // REPLACE the comments with the tests
-// make your test descriptions as clear and readable as possible
+// make your test descriptions as clear and readable as possible.
 
-// Case 2: Identify Acute Angles:
-// When the angle is less than 90 degrees,
-// Then the function should return "Acute angle"
 
-// Case 3: Identify Obtuse Angles:
-// When the angle is greater than 90 degrees and less than 180 degrees,
-// Then the function should return "Obtuse angle"
+test("should identify acute angle (0 < angle < 90)",()=>{
+  expect(getAngleType(45)).toEqual("Acute angle");
+  expect(getAngleType(89.9)).toEqual("Acute angle");
+  expect(getAngleType(20.6)).toEqual("Acute angle");
+});
+
+
+test("should identify obtuse angle(90° < angle < 180°)",()=>{
+  expect(getAngleType(120)).toEqual("Obtuse angle");
+  expect(getAngleType(90.1)).toEqual("Obtuse angle")
+  expect(getAngleType(179.9)).toEqual("Obtuse angle")
+});
+
 
-// Case 4: Identify Straight Angles:
-// When the angle is exactly 180 degrees,
-// Then the function should return "Straight angle"
+test("should identify straight angle(angle=180°)",()=>{
+  expect(getAngleType(180)).toEqual("Straight angle")
+});
+
+
+test("should identify reflex angle(180<angle<=360)",()=>{
+  expect(getAngleType(230)).toEqual("Reflex angle")
+  expect(getAngleType(180.1)).toEqual("Reflex angle");
+  expect(getAngleType(360)).toEqual("Reflex angle");
+});
+
+test("should identify revolutional angle(angle>360)", () => {
+  expect(getAngleType(390)).toEqual("Revolutional angle");
+});
 
-// Case 5: Identify Reflex Angles:
-// When the angle is greater than 180 degrees and less than 360 degrees,
-// Then the function should return "Reflex angle"
+test("should identify a negative angle(angle<0)", () => {
+  expect(getAngleType(-390)).toEqual("Negative angle");
+});

Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js

@@ -1,6 +1,13 @@
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
-    // add your completed function from key-implement here
+    if (isNaN(numerator) || isNaN(denominator)) return false;
+    if (Math.abs(numerator) < Math.abs(denominator)) {
+        return true}else{
+            return false;
+        };
+
+
+
+    // add your completed function from key-implement here.
 }
 
 module.exports = isProperFraction;

Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js

@@ -5,7 +5,19 @@ test("should return true for a proper fraction", () => {
 });
 
 // Case 2: Identify Improper Fractions:
+test("should return false for improper fraction",()=>{
+  expect(isProperFraction(5,2)).toEqual(false);
+})
 
 // Case 3: Identify Negative Fractions:
+test("should return true for negative fraction",()=>{
+  expect(isProperFraction(-4,7)).toEqual(true);
+})
 
-// Case 4: Identify Equal Numerator and Denominator:
+// Case 4: Identify Equal Numerator and Denominator:.
+test("should return false for equal numerator and denominator",()=>{
+  expect(isProperFraction(3,3)).toEqual(false);
+})
+test("should return NaN for non-numbers",()=>{
+  expect(isProperFraction(3,NaN)).toEqual(NaN);
+})

Sprint-3/2-mandatory-rewrite/3-get-card-value.js

@@ -1,5 +1,18 @@
 function getCardValue(card) {
-    // replace with your code from key-implement
-    return 11;
+    // replace with your code from key-implement...
+    let rank=card.slice(0,-1);
+    if (rank === "A") return 11;
+    const allrank=["2","3","4","5","6","7","8","9","10"]
+    if(allrank.includes(rank))return Number(rank);
+    if(rank==="10"|| rank==="J" || rank==="Q" || rank==="K") return 10;
+    else return "Invalid card rank";
+
 }
-module.exports = getCardValue;
+module.exports = getCardValue;
+
+
+// console.log(getCardValue("0x02♠"));
+// console.log(getCardValue("2.1♠"));
+// console.log(getCardValue("00_02♠"));
+// console.log(getCardValue("3e0♠"));
+// console.log(getCardValue("000002♠"));

Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js

@@ -5,7 +5,37 @@ test("should return 11 for Ace of Spades", () => {
     expect(aceofSpades).toEqual(11);
     });
 
-// Case 2: Handle Number Cards (2-10):
-// Case 3: Handle Face Cards (J, Q, K):
+// Case 2: Handle Number Cards (2-10):..
+test("should return Number Cards (2-10)", () => {
+  for (let i=2; i<=10;i++){
+  const card = i + "♠"
+  expect(getCardValue(card)).toEqual(i);
+  }
+});
+test("should return 2 for 2 of Spades", () => {
+const twoofSpades = getCardValue("2♠");
+expect(twoofSpades).toEqual(2);
+})
+// Case 3: Handle Face Cards (J, Q, K):.
+test("should return 10 for Face Cards (J, Q, K)", () => {
+  const jofSpades = getCardValue("J♠");
+  expect(jofSpades).toEqual(10);
+  expect(getCardValue("K♠")).toEqual(10);
+  expect(getCardValue("Q♠")).toEqual(10)
+});
 // Case 4: Handle Ace (A):
+test("should return 11 for Ace of Heart",()=>{
+    const aceofHeart = getCardValue("A♥");
+    expect(aceofHeart).toEqual(11);
+})
 // Case 5: Handle Invalid Cards:
+test("should return invalid cards for anything else",()=>{
+    expect(getCardValue("l")).toBe("Invalid card rank")
+})
+
+test("should return invalid cards for anything else", () => {
+  expect(getCardValue("2.1♠")).toBe("Invalid card rank");
+});
+test("should return invalid cards for anything else", () => {
+  expect(getCardValue("00_02♠")).toBe("Invalid card rank");
+});

Sprint-3/3-mandatory-practice/implement/count.js

@@ -1,5 +1,5 @@
 function countChar(stringOfCharacters, findCharacter) {
-    return 5
+    return stringOfCharacters.split("").filter((char)=>char===findCharacter).length
 }
-
+//console.log(countChar("heello","l"))
 module.exports = countChar;

Sprint-3/3-mandatory-practice/implement/count.test.js

@@ -22,3 +22,9 @@ test("should count multiple occurrences of a character", () => {
 // And a character char that does not exist within the case-sensitive str,
 // When the function is called with these inputs,
 // Then it should return 0, indicating that no occurrences of the char were found in the case-sensitive str.
+test("should return 0 for no occurrences",()=>{
+  const str = "papadie";
+  const char = "o";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+})

Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js

@@ -1,5 +1,26 @@
 function getOrdinalNumber(num) {
- return "1st";
+
+    if (isNaN(num) || (!Number.isInteger(num))) {
+      return "NaN";
+    }
+
+const strNum=String(num);
+const lastDigit=Number(strNum.slice(-1));
+const lastTwoDigits=Number(strNum.slice(-2));
+
+if (lastTwoDigits >= 11 && lastTwoDigits <=13) return num + "th";
+
+if(lastDigit===1)return num + "st";
+
+if ( lastDigit===2)  return num + "nd";
+
+ if (lastDigit === 3) return num + "rd";
+
+ return num+"th"
+
 }
 
-module.exports = getOrdinalNumber;
+
+module.exports = getOrdinalNumber;
+
+