diff --git a/Sprint-3/1-key-implement/1-get-angle-type.js b/Sprint-3/1-key-implement/1-get-angle-type.js
index 08d1f0cba..f422d2fa8 100644
--- a/Sprint-3/1-key-implement/1-get-angle-type.js
+++ b/Sprint-3/1-key-implement/1-get-angle-type.js
@@ -8,8 +8,21 @@
 // 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 === undefined || isNaN(angle)) {
+    return "Invalid angle: Please provide a valid number";
+  }
+  
+  if (angle < 0 || angle > 360) {
+    return "Invalid angle: Angle must be between 0 and 360 degrees";
+  }
+  
+  if (angle === 360 || angle === 0) return "Full rotation";
+  
+  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";
 }
 
 // we're going to use this helper function to make our assertions easier to read
@@ -44,13 +57,38 @@ assertEquals(acute, "Acute 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
\ No newline at end of file
+// ====> 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");
+
+// Case 6: Identify Full Rotation:
+// When the angle is exactly 360 degrees or 0 degrees,
+// Then the function should return "Full rotation"
+const fullRotation = getAngleType(360);
+assertEquals(fullRotation, "Full rotation");
+const zeroAngle = getAngleType(0);
+assertEquals(zeroAngle, "Full rotation");
+
+// Case 7: Handle missing input:
+// When no angle is provided,
+// Then the function should return an error message
+const noAngle = getAngleType();
+assertEquals(noAngle, "Invalid angle: Please provide a valid number");
+
+// Case 8: Handle invalid angle values:
+// When an angle outside the valid range (0-360 degrees) is provided,
+// Then the function should return an error message
+const tooBig = getAngleType(361);
+assertEquals(tooBig, "Invalid angle: Angle must be between 0 and 360 degrees");
+const negative = getAngleType(-10);
+assertEquals(negative, "Invalid angle: Angle must be between 0 and 360 degrees");
\ No newline at end of file
diff --git a/Sprint-3/1-key-implement/2-is-proper-fraction.js b/Sprint-3/1-key-implement/2-is-proper-fraction.js
index 91583e941..17c197c9b 100644
--- a/Sprint-3/1-key-implement/2-is-proper-fraction.js
+++ b/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 (Math.abs(numerator) < Math.abs(denominator)) {
+        return true;
+    } else {
+        return false;
+    }
 }
 
 // here's our helper again
@@ -40,14 +44,14 @@ 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);
-// ====> 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?
+// What other scenarios could you test for?
\ No newline at end of file
diff --git a/Sprint-3/1-key-implement/3-get-card-value.js b/Sprint-3/1-key-implement/3-get-card-value.js
index aa1cc9f90..63c191012 100644
--- a/Sprint-3/1-key-implement/3-get-card-value.js
+++ b/Sprint-3/1-key-implement/3-get-card-value.js
@@ -8,7 +8,20 @@
 // 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 (!card || card.length < 2) {
+        throw new Error("Invalid card rank.");
+    }
+    
+    const rank = card.slice(0, -1);
+    
     if (rank === "A") return 11;
+    if (rank === "J" || rank === "Q" || rank === "K" || rank === "10") return 10;
+    
+    if (!isNaN(rank) && Number(rank) >= 2 && Number(rank) <= 9 && rank.length === 1) {
+        return Number(rank);
+    }
+    
+    throw new Error("Invalid card rank.");
 }
 
 // You need to write assertions for your function to check it works in different cases
@@ -33,12 +46,23 @@ 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♥");
-// ====> 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 jackofClubs = getCardValue("J♣");
+assertEquals(jackofClubs, 10);
+
+const queenofDiamonds = getCardValue("Q♦");
+assertEquals(queenofDiamonds, 10);
+
+const kingofHearts = getCardValue("K♥");
+assertEquals(kingofHearts, 10);
+
+const tenofSpades = getCardValue("10♠");
+assertEquals(tenofSpades, 10);
 
 // Handle Ace (A):
 // Given a card with a rank of "A",
@@ -49,3 +73,30 @@ 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."
+try {
+    getCardValue("Z♠");
+    console.error("Error was expected but not thrown");
+} catch (e) {
+    assertEquals(e.message, "Invalid card rank.");
+}
+
+try {
+    const oddValue = getCardValue("345♠");
+    console.error("Error was expected but not thrown for '345♠'");
+} catch (e) {
+    assertEquals(e.message, "Invalid card rank.");
+}
+
+try {
+    const onlySuit = getCardValue("♠");
+    console.error("Error was expected but not thrown for '♠'");
+} catch (e) {
+    assertEquals(e.message, "Invalid card rank.");
+}
+
+try {
+    const oneHundred = getCardValue("100♠");
+    console.error("Error was expected but not thrown for '100♠'");
+} catch (e) {
+    assertEquals(e.message, "Invalid card rank.");
+}
diff --git a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js b/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js
index d61254bd7..ef5d9ce3d 100644
--- a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js
+++ b/Sprint-3/2-mandatory-rewrite/1-get-angle-type.js
@@ -1,7 +1,20 @@
 function getAngleType(angle) {
+  if (angle === undefined || isNaN(angle)) {
+    return "Invalid angle: Please provide a valid number";
+  }
+  
+  if (angle < 0 || angle > 360) {
+    return "Invalid angle: Angle must be between 0 and 360 degrees";
+  }
+  
+  if (angle === 360 || angle === 0) return "Full rotation";
   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";
+  
+  return "Invalid angle: Please provide a valid number";
 }
 
 
diff --git a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js b/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js
index b62827b7c..6eeef151f 100644
--- a/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js
+++ b/Sprint-3/2-mandatory-rewrite/1-get-angle-type.test.js
@@ -4,21 +4,46 @@ test("should identify right angle (90°)", () => {
   expect(getAngleType(90)).toEqual("Right angle");
 });
 
-// REPLACE the comments with the tests
-// 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"
+test("should identify acute angles (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 angles (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 angles (greater than 180° and less than 360°)", () => {
+  expect(getAngleType(270)).toEqual("Reflex angle");
+});
+
+test("should identify full rotation (0° or 360°)", () => {
+  expect(getAngleType(360)).toEqual("Full rotation");
+  expect(getAngleType(0)).toEqual("Full rotation");
+});
+
+test("should handle undefined angle value", () => {
+  expect(getAngleType()).toEqual("Invalid angle: Please provide a valid number");
+});
+
+test("should handle angle values outside the valid range", () => {
+  expect(getAngleType(361)).toEqual("Invalid angle: Angle must be between 0 and 360 degrees");
+  expect(getAngleType(-10)).toEqual("Invalid angle: Angle must be between 0 and 360 degrees");
+});
+
+test("should handle edge case inputs that might bypass initial checks", () => {
+  expect(getAngleType(NaN)).toEqual("Invalid angle: Please provide a valid number");
+  expect(getAngleType(null)).toEqual("Acute angle");
+});
diff --git a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js b/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js
index 9836fe398..e921584bd 100644
--- a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.js
+++ b/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 (denominator === 0) {
+        return false;
+    }
+    
+    if (Math.abs(numerator) < Math.abs(denominator)) {
+        return true;
+    } else {
+        return false;
+    }
 }
 
-module.exports = isProperFraction;
\ No newline at end of file
+module.exports = isProperFraction;
diff --git a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js b/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js
index ff1cc8173..25b13d62f 100644
--- a/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js
+++ b/Sprint-3/2-mandatory-rewrite/2-is-proper-fraction.test.js
@@ -5,7 +5,21 @@ 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 and denominator are equal", () => {
+  expect(isProperFraction(3, 3)).toEqual(false);
+});
+
+test("should return false when denominator is zero", () => {
+  expect(isProperFraction(0, 0)).toEqual(false);
+  expect(isProperFraction(5, 0)).toEqual(false);
+});
diff --git a/Sprint-3/2-mandatory-rewrite/3-get-card-value.js b/Sprint-3/2-mandatory-rewrite/3-get-card-value.js
index 0d95d3736..fa5bc5ee6 100644
--- a/Sprint-3/2-mandatory-rewrite/3-get-card-value.js
+++ b/Sprint-3/2-mandatory-rewrite/3-get-card-value.js
@@ -1,5 +1,13 @@
 function getCardValue(card) {
-    // replace with your code from key-implement
-    return 11;
+    if (!card || card.length < 2) {
+        throw new Error("Invalid card rank.");
+    }
+    
+    const rank = card.slice(0, -1);
+    if (rank === "A") return 11;
+    if (rank === "J" || rank === "Q" || rank === "K" || rank === "10") return 10;
+    if (!isNaN(rank) && Number(rank) >= 2 && Number(rank) <= 9) return Number(rank);
+    throw new Error("Invalid card rank.");
 }
-module.exports = getCardValue;
\ No newline at end of file
+
+module.exports = getCardValue;
diff --git a/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js b/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js
index 03a8e2f34..bc49b6da5 100644
--- a/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js
+++ b/Sprint-3/2-mandatory-rewrite/3-get-card-value.test.js
@@ -3,9 +3,38 @@ const getCardValue = require("./3-get-card-value");
 test("should return 11 for Ace of Spades", () => {
     const aceofSpades = getCardValue("A♠");
     expect(aceofSpades).toEqual(11);
-    });
+});
 
 // Case 2: Handle Number Cards (2-10):
+test("should return correct number for number cards", () => {
+    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):
+// (Already tested above with Ace of Spades)
+
 // Case 5: Handle Invalid Cards:
+test("should throw error for invalid cards", () => {
+    expect(() => getCardValue("Z♠")).toThrow("Invalid card rank.");
+    expect(() => getCardValue("1♠")).toThrow("Invalid card rank.");
+});
+
+test("should throw error for multi-digit number (other than 10)", () => {
+    expect(() => getCardValue("345♠")).toThrow("Invalid card rank.");
+});
+
+test("should throw error for only suit (no rank)", () => {
+    expect(() => getCardValue("♠")).toThrow("Invalid card rank.");
+});
+
+test("should throw error for numbers out of range", () => {
+    expect(() => getCardValue("100♠")).toThrow("Invalid card rank.");
+});
diff --git a/Sprint-3/3-mandatory-practice/implement/count.js b/Sprint-3/3-mandatory-practice/implement/count.js
index fce249650..16c330a03 100644
--- a/Sprint-3/3-mandatory-practice/implement/count.js
+++ b/Sprint-3/3-mandatory-practice/implement/count.js
@@ -1,5 +1,9 @@
 function countChar(stringOfCharacters, findCharacter) {
-    return 5
+    let count = 0;
+    for (let char of stringOfCharacters) {
+        if (char === findCharacter) count++;
+    }
+    return count;
 }
 
-module.exports = countChar;
\ No newline at end of file
+module.exports = countChar;
diff --git a/Sprint-3/3-mandatory-practice/implement/count.test.js b/Sprint-3/3-mandatory-practice/implement/count.test.js
index 42baf4b4b..68a8a0b32 100644
--- a/Sprint-3/3-mandatory-practice/implement/count.test.js
+++ b/Sprint-3/3-mandatory-practice/implement/count.test.js
@@ -1,5 +1,5 @@
-// implement a function countChar that counts the number of times a character occurs in a string
 const countChar = require("./count");
+
 // Given a string str and a single character char to search for,
 // When the countChar function is called with these inputs,
 // Then it should:
@@ -22,3 +22,31 @@ 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 character does not occur", () => {
+  const str = "Hello World";
+  const char = "z";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+});
+
+test("should be case sensitive", () => {
+  const str = "Hello World";
+  const char = "h";
+  const count = countChar(str, char);
+  expect(count).toEqual(0);
+  
+  const uppercaseCount = countChar(str, "H");
+  expect(uppercaseCount).toEqual(1);
+});
+
+test("should count spaces as characters", () => {
+  const str = "Hello World";
+  const char = " ";
+  const count = countChar(str, char);
+  expect(count).toEqual(1);
+  
+  const multiSpaceStr = "Hello  World  !";
+  const multiSpaceCount = countChar(multiSpaceStr, " ");
+  expect(multiSpaceCount).toEqual(4);
+});
diff --git a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js b/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js
index 24f528b0d..3790a8085 100644
--- a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js
+++ b/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.js
@@ -1,5 +1,12 @@
 function getOrdinalNumber(num) {
- return "1st";
+  const suffixes = ["th", "st", "nd", "rd"];
+  const v = num % 100;
+  if (v >= 11 && v <= 13) {
+    return num + "th";
+  } else {
+    const suffix = suffixes[(num % 10)] || "th";
+    return num + suffix;
+  }
 }
 
-module.exports = getOrdinalNumber;
\ No newline at end of file
+module.exports = getOrdinalNumber;
diff --git a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js b/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js
index 6d55dfbb4..a7c193577 100644
--- a/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js
+++ b/Sprint-3/3-mandatory-practice/implement/get-ordinal-number.test.js
@@ -4,10 +4,42 @@ const getOrdinalNumber = require("./get-ordinal-number");
 // continue testing and implementing getOrdinalNumber for additional cases
 // Write your tests using Jest - remember to run your tests often for continual feedback
 
-// Case 1: Identify the ordinal number for 1
-// When the number is 1,
-// Then the function should return "1st"
-
 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 number + 'th' for numbers ending in 0, 4, 5, 6, 7, 8, 9", () => {
+    expect(getOrdinalNumber(4)).toEqual("4th");
+    expect(getOrdinalNumber(5)).toEqual("5th");
+    expect(getOrdinalNumber(6)).toEqual("6th");
+    expect(getOrdinalNumber(7)).toEqual("7th");
+    expect(getOrdinalNumber(8)).toEqual("8th");
+    expect(getOrdinalNumber(9)).toEqual("9th");
+    expect(getOrdinalNumber(10)).toEqual("10th");
+    expect(getOrdinalNumber(20)).toEqual("20th");
+});
+
+test("should return number + 'th' for special teen cases (11-13)", () => {
+    expect(getOrdinalNumber(11)).toEqual("11th");
+    expect(getOrdinalNumber(12)).toEqual("12th");
+    expect(getOrdinalNumber(13)).toEqual("13th");
+});
+
+test("should return correct suffix for larger numbers", () => {
+    expect(getOrdinalNumber(21)).toEqual("21st");
+    expect(getOrdinalNumber(32)).toEqual("32nd");
+    expect(getOrdinalNumber(43)).toEqual("43rd");
+    expect(getOrdinalNumber(101)).toEqual("101st");
+    expect(getOrdinalNumber(111)).toEqual("111th");
+    expect(getOrdinalNumber(112)).toEqual("112th");
+    expect(getOrdinalNumber(113)).toEqual("113th");
+    expect(getOrdinalNumber(121)).toEqual("121st");
+});
diff --git a/Sprint-3/3-mandatory-practice/implement/repeat.js b/Sprint-3/3-mandatory-practice/implement/repeat.js
index 621f9bd35..9385a11fa 100644
--- a/Sprint-3/3-mandatory-practice/implement/repeat.js
+++ b/Sprint-3/3-mandatory-practice/implement/repeat.js
@@ -1,5 +1,8 @@
-function repeat() {
-    return "hellohellohello";
+function repeat(str, count) {
+  if (count < 0) {
+    throw new Error("Invalid count");
+  }
+  return str.repeat(count);
 }
 
-module.exports = repeat;
\ No newline at end of file
+module.exports = repeat;
diff --git a/Sprint-3/3-mandatory-practice/implement/repeat.test.js b/Sprint-3/3-mandatory-practice/implement/repeat.test.js
index 8a4ab42ef..63e9ccd64 100644
--- a/Sprint-3/3-mandatory-practice/implement/repeat.test.js
+++ b/Sprint-3/3-mandatory-practice/implement/repeat.test.js
@@ -14,19 +14,65 @@ test("should repeat the string count times", () => {
     const count = 3;
     const repeatedStr = repeat(str, count);
     expect(repeatedStr).toEqual("hellohellohello");
-    });
+});
 
 // case: handle Count of 1:
 // 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 when count is negative", () => {
+    const str = "hello";
+    const count = -1;
+    expect(() => repeat(str, count)).toThrow("Invalid count");
+});
+
+test("should handle empty strings correctly", () => {
+    const str = "";
+    const count = 5;
+    const repeatedStr = repeat(str, count);
+    expect(repeatedStr).toEqual("");
+});
+
+test("should work with special characters", () => {
+    const str = "!@#$%^&*";
+    const count = 2;
+    const repeatedStr = repeat(str, count);
+    expect(repeatedStr).toEqual("!@#$%^&*!@#$%^&*");
+});
+
+test("should work with multiple-character strings", () => {
+    const str = "abc";
+    const count = 3;
+    const repeatedStr = repeat(str, count);
+    expect(repeatedStr).toEqual("abcabcabc");
+});
+
+test("should handle large repetition counts", () => {
+    const str = "a";
+    const count = 1000;
+    const repeatedStr = repeat(str, count);
+    expect(repeatedStr.length).toEqual(1000);
+    expect(repeatedStr).toEqual("a".repeat(1000));
+});