created test-case for repeat and tested the cases with a pass

Author: AdnaanA

Sprint-3/2-practice-tdd/repeat.js

@@ -1,5 +1,31 @@
 function repeat() {
-  return "hellohellohello";
+  if (arguments.length !== 2) {
+    throw new Error("Function requires exactly two arguments: str and count.");
+  }
+
+  const [str, count] = arguments;
+
+  if (typeof str !== "string") {
+    throw new Error("First argument must be a string.");
+  }
+
+  if (typeof count !== "number" || !Number.isInteger(count) || count < 0) {
+    throw new Error("Second argument 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-3/2-practice-tdd/repeat.test.js

@@ -21,12 +21,35 @@ test("should repeat the string count times", () => {
 // 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 = "world";
+  const count = 1;
+  const repeatedStr = repeat(str, count);
+  expect(repeatedStr).toEqual("world");
+});
+
 // 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 = "test";
+  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 = "error";
+  const count = -2;
+  expect(() => repeat(str, count)).toThrow(
+    "Second argument must be a non-negative integer."
+  );
+});
+