update - repeat str test

Author: abmhts

practice-tdd/repeat-str.js

@@ -2,7 +2,7 @@ export function repeatStr(str, count) {
   // Your implementation of this function must *not* call String.prototype.repeat (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/repeat).
   // The goal is to re-implement that function, not to use it.
   if (count < 0) {
-    return "negative counts are not valid";
+    throw new Error("should throw an error,as negative counts are not valid");
   }
   let result = "";
   for (let i = 0; i < count; i++) {

practice-tdd/repeat-str.test.js

@@ -57,9 +57,8 @@ test("should return an empty string when the string is empty and count is 0", ()
 // Given a target string `str` and a negative integer `count`,
 // When the repeatStr function is called with these inputs,
 // Then it should throw an error, as negative counts are not valid.
-test("should return an error, as negative counts are not valid", () => {
+test("should throw an error, as negative counts are not valid", () => {
   const str = "hello";
   const count = -1;
-  const repeatedStr = repeatStr(str, count);
-  expect(repeatedStr).toEqual("negative counts are not valid");
+  expect(() => repeatStr(str, count)).toThrow();
 });