London | May-2025 | Ikenna Agulobi | Structuring and Testing Data sprint-3

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

@@ -8,10 +8,16 @@
 // Then, write the next test! :) Go through this process until all the cases are implemented
 
 function getAngleType(angle) {
+  if(angle <= 0 || angle >= 360) return "Invalid angle";
    if (angle === 90) return "Right angle";
    // read to the end, complete line 36, then pass your test here
+   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";
 }
 
+console.log(getAngleType(-2));
 // we're going to use this helper function to make our assertions easier to read
 // if the actual output matches the target output, the test will pass
 function assertEquals(actualOutput, targetOutput) {
@@ -41,16 +47,26 @@ assertEquals(acute, "Acute angle");
 
 // Case 3: Identify Obtuse Angles:
 // When the angle is greater than 90 degrees and less than 180 degrees,
+// if(angle > 90 && angle is < 180) return "Obtuse angle"
 // Then the function should return "Obtuse angle"
 const obtuse = getAngleType(120);
 // ====> write your test here, and then add a line to pass the test in the function above
-
+assertEquals(obtuse, "Obtuse angle")
 // 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(360)
+assertEquals(reflex, "Reflex angle");
+
+const fromZeroBelow = getAngleType(-5)
+assertEquals(fromZeroBelow, "Invalid angle")
+
+const threeSixtyAndAbove = getAngleType(360);
+assertEquals(threeSixtyAndAbove, "Invalid angle");

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

@@ -8,7 +8,14 @@
 // 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 (denominator === 0) {
+    return "Denominator cannot be zero";
+  }
+  if (Math.abs(numerator) < Math.abs(denominator)) {
+    return true;
+  } else {
+    return false;
+  }
 }
 
 // here's our helper again
@@ -41,13 +48,15 @@ assertEquals(improperFraction, false);
 // 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);
 // ====> complete with your assertion
+assertEquals(negativeFraction, true);
 
 // 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);
 // ====> complete with your assertion
+assertEquals(equalFraction, false);
 
 // Stretch:
 // What other scenarios could you test for?

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

@@ -7,8 +7,19 @@
 // complete the rest of the tests and cases
 // 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) {
-    if (rank === "A") return 11;
+  let rank = card.slice(0,-1); // this line removes the emojis
+
+  if (rank === "A") {
+    return 11;
+  } else if (+rank >= 2 && +rank <= 10) {
+    return +rank;
+  } else if (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
@@ -34,12 +45,26 @@ assertEquals(aceofSpades, 11);
 // Then it should return the numeric value corresponding to the rank (e.g., "5" should return 5).
 const fiveofHearts = getCardValue("5♥");
 // ====> write your test here, and then add a line to pass the test in the function above
+assertEquals(fiveofHearts, 5);
 
 // 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 rankTen = getCardValue("10♥");
+assertEquals(rankTen, 10);
+
+const cardK = getCardValue("K♠");
+assertEquals(cardK, 10);
+
+const cardJ = getCardValue("J♣");
+assertEquals(cardJ, 10);
+
+const cardQ = getCardValue("Q♦");
+assertEquals(cardQ, 10)
+
+
 // Handle Ace (A):
 // Given a card with a rank of "A",
 // When the function is called with an Ace,
@@ -49,3 +74,5 @@ const fiveofHearts = getCardValue("5♥");
 // 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 invalidCards = getCardValue("");
+assertEquals(invalidCards, "Invalid Card rank.");

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

@@ -1,7 +1,10 @@
 function getAngleType(angle) {
   if (angle === 90) return "Right angle";
   // replace with your completed function from key-implement
-
+  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";
 }
 
 
@@ -13,6 +16,6 @@ function getAngleType(angle) {
 
 // Don't get bogged down in this detail
 // Jest uses CommonJS module syntax by default as it's quite old
-// We will upgrade our approach to ES6 modules in the next course module, so for now 
+// We will upgrade our approach to ES6 modules in the next course module, so for now
 // we have just written the CommonJS module.exports syntax for you
-module.exports = getAngleType;
+module.exports = getAngleType;

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

@@ -11,14 +11,28 @@ test("should identify right angle (90°)", () => {
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
 
+test("should identify Acute angle when Angle is less than 90°", ()=>{
+  expect(getAngleType(80)).toEqual("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 Obtuse angle when Angle is greater than 90° and less thank 180°", () => {
+  expect(getAngleType(101)).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 when Angle is 180°", () => {
+  expect(getAngleType(180)).toEqual("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"
+
+test("should identify Reflex angle when Angle is greater than 180° and less than 360°", () => {
+  expect(getAngleType(202)).toEqual("Reflex angle");
+});

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

@@ -1,6 +1,17 @@
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
+
     // add your completed function from key-implement here
+    if(denominator === 0){
+    throw new Error("Denominator cannot be zero")
+    }
+    if( Math.abs(numerator) < Math.abs(denominator)){
+      return true;
+    }else{
+      return false;
+    }
 }
 
-module.exports = isProperFraction;
+console.log(isProperFraction(-3, 0));
+
+// console.log(isProperFraction(-4, 6));
+module.exports = isProperFraction;

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

@@ -5,7 +5,14 @@ test("should return true for a proper fraction", () => {
 });
 
 // Case 2: Identify Improper Fractions:
-
+test("should return false for an improper fraction", () =>{
+  expect(isProperFraction(5,2)).toEqual(false);
+});
 // Case 3: Identify Negative Fractions:
-
+test("should return true for a negative proper fraction",() =>{
+  expect(isProperFraction(-4,7)).toEqual(true);
+});
 // Case 4: Identify Equal Numerator and Denominator:
+test("should return false when numerator is Equal to denominator ", () => {
+  expect(isProperFraction(3,3)).toEqual(false);
+});

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;
+    let rank = card.slice(0, -1); // this line removes the emojis
+
+    const rangeTwoToTenArray = ["2", "3", "4", "5", "6", "7", "8", "9", "10"];//
+
+    if (rank === "A") {
+      return 11;
+    } else if (rangeTwoToTenArray.includes(rank)) {
+      return parseInt(rank);
+    } else if (rank === "J" || rank === "Q" || rank === "K") {
+      return 10;
+    } else {
+      throw new Error("Invalid Card rank.");
+    }
 }
-module.exports = getCardValue;
+
+module.exports = getCardValue;

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

@@ -1,11 +1,23 @@
 const getCardValue = require("./3-get-card-value");
 
 test("should return 11 for Ace of Spades", () => {
-    const aceofSpades = getCardValue("A♠");
-    expect(aceofSpades).toEqual(11);
+    expect(getCardValue("A♠")).toEqual(11);
     });
 
 // Case 2: Handle Number Cards (2-10):
+test("Should return rank number between 2 and 10",()=>{
+  expect(getCardValue("5♥")).toEqual(5);
+});
+
 // Case 3: Handle Face Cards (J, Q, K):
+test("Should return 10 for Face Cards J, Q, K", () => {
+expect(getCardValue("K♠")).toEqual(10);
+expect(getCardValue("J♣")).toEqual(10);
+expect(getCardValue("Q♦")).toEqual(10);
+});
+
 // Case 4: Handle Ace (A):
 // Case 5: Handle Invalid Cards:
+test("should throw an error indicating Invalid card rank.", () => {
+  expect(() => getCardValue("")).toThrow("Invalid Card rank.");
+});

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

@@ -1,5 +1,12 @@
-function countChar(stringOfCharacters, findCharacter) {
-    return 5
+function countChar(strOfCahracters, findcharacter) {
+  let count = 0;
+  for (let i = 0; i < strOfCahracters.length; i++) {
+    if (strOfCahracters[i] === findcharacter) {
+      count++;
+    }
+  }
+  return count;
 }
 
-module.exports = countChar;
+// console.log(countChar("aaaaa", "a"));
+module.exports = countChar;

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

@@ -22,3 +22,10 @@ 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 identify no occurrences of character", () => {
+  const str1 = 'AAAAA'
+  const char1 = 'a'
+  const count = countChar(str1, char1)
+  expect(count).toEqual(0);
+});

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

@@ -1,5 +1,22 @@
 function getOrdinalNumber(num) {
- return "1st";
+  let lastNumber = num % 10; // Using the modulo operator to get the last digit of the number.
+  let lastTwoNumbers = num % 100; //Using the modulo operator to get the last two digits of the number.
+
+  if (lastTwoNumbers === 11 || lastTwoNumbers === 12 || lastTwoNumbers === 13) {
+    return num + "th";
+  }
+
+  if (lastNumber === 1) {
+    return num + "st";
+  } else if (lastNumber === 2) {
+    return num + "nd";
+  } else if (lastNumber === 3) {
+    return num + "rd";
+  } else {
+    return num + "th";
+  }
 }
 
-module.exports = getOrdinalNumber;
+console.log(getOrdinalNumber(3));
+
+module.exports = getOrdinalNumber;

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

@@ -8,6 +8,26 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // When the number is 1,
 // Then the function should return "1st"
 
-test("should return '1st' for 1", () => {
-    expect(getOrdinalNumber(1)).toEqual("1st");
-    });
+test("Should append 'st' to numbers ending in 1, except those ending in 11", () => {
+  expect(getOrdinalNumber(1)).toEqual("1st");
+  expect(getOrdinalNumber(21)).toEqual("21st");
+  expect(getOrdinalNumber(101)).toEqual("101st");
+});
+
+test("append 'nd' to numbers ending in 2, except those ending in 12", () => {
+  expect(getOrdinalNumber(2)).toEqual("2nd");
+  expect(getOrdinalNumber(22)).toEqual("22nd");
+  expect(getOrdinalNumber(132)).toEqual("132nd");
+});
+
+test("append 'rd' to numbers ending in 3, except those ending in 13", () => {
+  expect(getOrdinalNumber(3)).toEqual("3rd");
+  expect(getOrdinalNumber(23)).toEqual("23rd");
+  expect(getOrdinalNumber(103)).toEqual("103rd");
+});
+
+test("Should append 'th' to numbers ending in 11, 12, 13", () => {
+  expect(getOrdinalNumber(11)).toEqual("11th");
+  expect(getOrdinalNumber(12)).toEqual("12th");
+  expect(getOrdinalNumber(13)).toEqual("13th");
+});

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

@@ -1,5 +1,10 @@
-function repeat() {
-    return "hellohellohello";
+function repeat(str, count) {
+  if (count < 0) {
+    throw new Error("Negative numbers are not valid!");
+  } else {
+    return str.repeat(count);
+  }
 }
 
-module.exports = repeat;
+// console.log(repeat("", -1));
+module.exports = repeat;