ITP JAN | ELVIRA MLADENOVA | MODULE-STRUCTURING AND TESTING DATA | COURSEWORK SPRINT 3 | WEEK 6

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

@@ -8,8 +8,17 @@
 // Then, write the next test! :) Go through this process until all the cases are implemented
 
 function getAngleType(angle) {
-   if (angle === 90) return "Right angle";
-   // read to the end, complete line 36, then pass your test here
+   if (angle === 90) {
+    return "Right angle";
+   } else if (angle < 90) {
+        return "Acute 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";
+    }
 }
 
 // we're going to use this helper function to make our assertions easier to read
@@ -43,14 +52,18 @@ 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(270);
+assertEquals(reflex, "Reflex angle");

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

@@ -8,7 +8,7 @@
 // write one test at a time, and make it pass, build your solution up methodically
 
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
+    return Math.abs(numerator) < denominator;
 }
 
 // here's our helper again
@@ -40,13 +40,15 @@ 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:

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

@@ -8,9 +8,24 @@
 // 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;
+     const rank = card.slice(0, -1);
+
+    if (rank === "A") {
+        return 11;
+    }
+
+    if (rank === "K" || rank === "Q" || rank === "J" || rank === "10") {
+        return 10;
+    }
+
+    const number = parseInt(rank, 10);
+    if (!isNaN(number) && number >= 2 && number <= 9) {
+        return number;
+    }
+    throw new Error("Invalid card rank.");
 }
 
+
 // You need to write assertions for your function to check it works in different cases
 // 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
@@ -33,19 +48,29 @@ 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 kingofDiamonds = getCardValue("K♦");
+assertEquals(kingofDiamonds, 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 aceofSpades = getCardValue("A♠");
+assertEquals(aceofSpades, 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."
+try {
+    getCardValue("X♣");
+} catch (error) {
+    assertEquals(error.message, "Invalid card rank.");
+}

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

@@ -1,8 +1,19 @@
 function getAngleType(angle) {
-  if (angle === 90) return "Right angle";
+  if (angle === 90) {
+    return "Right angle";
+   } else if (angle < 90) {
+        return "Acute 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";
+    }
+}
   // replace with your completed function from key-implement
 
-}
+
 
 
 

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

@@ -10,15 +10,28 @@ test("should identify right angle (90°)", () => {
 // Case 2: Identify Acute Angles:
 // When the angle is less than 90 degrees,
 // Then the function should return "Acute angle"
+test("should identify acute angle (less than 90°)", () => {
+  expect(getAngleType(45)).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 (greater than 90° and less than 180°)", () => {
+  expect(getAngleType(120)).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 (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 (greater than 180° and less than 360°)", () => {
+  expect(getAngleType(270)).toEqual("Reflex angle");
+});

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

@@ -1,6 +1,7 @@
 function isProperFraction(numerator, denominator) {
-    if (numerator < denominator) return true;
-    // add your completed function from key-implement here
+    return Math.abs(numerator) < denominator;
 }
+    // add your completed function from key-implement here
+
 
 module.exports = isProperFraction;

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

@@ -5,7 +5,17 @@ test("should return true for a proper fraction", () => {
 });
 
 // Case 2: Identify Improper Fractions:
+test("should return false for an improper fraction (numerator greater than denominator)", () => {
+  expect(isProperFraction(5, 4)).toEqual(false);
+});
 
 // Case 3: Identify Negative Fractions:
+test("should correctly handle negative fractions", () => {
+  expect(isProperFraction(-2, 3)).toEqual(true);
+    expect(isProperFraction(4, -3)).toEqual(false);
+});
 
 // Case 4: Identify Equal Numerator and Denominator:
+test("should return false when numerator and denominator are equal", () => {
+  expect(isProperFraction(7, 7)).toEqual(false);
+});

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

@@ -1,5 +1,19 @@
 function getCardValue(card) {
+    const rank = card.slice(0, -1);
+
+    if (rank === "A") {
+        return 11;
+    }
+
+    if (rank === "K" || rank === "Q" || rank === "J" || rank === "10") {
+        return 10;
+    }
+
+    const number = parseInt(rank, 10);
+    if (!isNaN(number) && number >= 2 && number <= 9) {
+        return number;
+    }
+    throw new Error("Invalid card rank.");
     // replace with your code from key-implement
-    return 11;
 }
 module.exports = getCardValue;

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

@@ -6,6 +6,25 @@ test("should return 11 for Ace of Spades", () => {
     });
 
 // Case 2: Handle Number Cards (2-10):
+test("should return the numeric value for number cards (2-10)", () => {
+  expect(getCardValue("2♦")).toEqual(2);
+  expect(getCardValue("5♣")).toEqual(5);
+  expect(getCardValue("10♥")).toEqual(10);
+});
 // Case 3: Handle Face Cards (J, Q, K):
+test("should return 10 for face cards (J, Q, K)", () => {
+  expect(getCardValue("J♦")).toEqual(10);
+  expect(getCardValue("Q♣")).toEqual(10);
+  expect(getCardValue("K♥")).toEqual(10);
+});
 // Case 4: Handle Ace (A):
+test("should return 11 for any Ace (A)", () => {
+  expect(getCardValue("A♦")).toEqual(11);
+  expect(getCardValue("A♣")).toEqual(11);
+  expect(getCardValue("A♥")).toEqual(11);
+});
 // Case 5: Handle Invalid Cards:
+test("should return null or throw an error for invalid cards", () => { 
+  expect(getCardValue("1♦")).toBeNull();
+  expect(getCardValue("X")).toBeNull();
+});

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

@@ -1,5 +1,12 @@
-function countChar(stringOfCharacters, findCharacter) {
-    return 5
+ function countChar(str, char) { 
+let count = 0; 
+for (let i = 0; i < str.length; i++) {
+if ( str[i] === char) { 
+count++; 
+   } 
 }
+return count; 
+}
+
 
 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 if no occurrences of the character", () => {
+const str = "bcdef"; 
+const char = "a"; 
+const count = countChar(str, char);
+expect(count).toEqual(0);
+});

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

@@ -1,5 +1,22 @@
-function getOrdinalNumber(num) {
- return "1st";
+function getOrdinalNumber(number) {
+  const lastTwoDigits = number % 100;
+
+  if (lastTwoDigits === 11 || lastTwoDigits === 12 || lastTwoDigits === 13) {
+    return number + "th";
+  }
+
+  const lastDigit = number % 10;
+
+  switch (lastDigit) {
+    case 1:
+      return number + "st";
+    case 2:
+      return number + "nd";
+    case 3:
+      return number + "rd";
+    default:
+      return number + "th";
+  }
 }
 
 module.exports = getOrdinalNumber;

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

@@ -11,3 +11,11 @@ const getOrdinalNumber = require("./get-ordinal-number");
 test("should return '1st' for 1", () => {
     expect(getOrdinalNumber(1)).toEqual("1st");
     });
+ test("should return '2nd' for 2", () => { expect(getOrdinalNumber(2)).toEqual("2nd");
+ });
+test("should return '3rd' for 3", () => { expect(getOrdinalNumber(3)).toEqual("3rd");
+ });
+test("should return '4th' for 4", () => { expect(getOrdinalNumber(4)).toEqual("4th");
+ });
+test("should return '12th' for 12", () => { expect(getOrdinalNumber(12)).toEqual("12th");
+ });

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

@@ -1,5 +1,22 @@
-function repeat() {
-    return "hellohellohello";
+function repeat(str, count) {
+  if (count < 0) {
+    throw new Error("Count must be a non-negative integer.");
+  }
+
+  if (count === 0) {
+    return "";
+  }
+
+  if (count === 1) {
+    return str;
+  }
+
+  let result = "";
+  for (let i = 0; i < count; i++) {
+    result += str;
+  }
+
+  return result;
 }
 
 module.exports = repeat;

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

@@ -20,13 +20,30 @@ test("should repeat the string count times", () => {
 // Given a target string str and a count equal to 1,
 // When the repeat function is called with these inputs,
 // Then it should return the original str without repetition, ensuring that a count of 1 results in no repetition.
+test("should return the original string when count is 1", () => {
+  const str = "hello";
+  const count = 1;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("hello");
+});
 
 // case: Handle Count of 0:
 // Given a target string str and a count equal to 0,
 // When the repeat function is called with these inputs,
 // Then it should return an empty string, ensuring that a count of 0 results in an empty output.
+test("should return an empty string when count is 0", () => {
+  const str = "hello";
+  const count = 0;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("");
+});
 
 // case: Negative Count:
 // Given a target string str and a negative integer count,
 // When the repeat function is called with these inputs,
 // Then it should throw an error or return an appropriate error message, as negative counts are not valid.
+test("should throw an error for negative count", () => {
+  const str = "hello";
+  const count = -1;
+  expect(() => repeat(str, count)).toThrow("Count must be a non-negative integer");
+});