test: add test case for returning original string when count is 1

Author: CatchingKiyoko

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

@@ -20,6 +20,12 @@ test("should repeat the string count times", () => {
 // Given a target string str and a count equal to 1,
 // When the repeatStr 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,