Sprint 3 | Coursework 2 - Repeat Str

Author: kohanman

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

@@ -1,5 +1,9 @@
-function repeatStr() {
-  return "hellohellohello";
+function repeatStr(str, count) {
+  if (count < 0) {
+    return "Error, negative integer";
+  }
+
+  return str.repeat(count);
 }
 
 module.exports = repeatStr;

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

@@ -16,17 +16,23 @@ test("should repeat the string count times", () => {
   expect(repeatedStr).toEqual("hellohellohello");
 });
 
-// case: handle Count of 1:
-// 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 without repetition", () => {
+  const str = "hello";
+  const count = 1;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("hello");
+});
 
-// case: Handle Count of 0:
-// Given a target string str and a count equal to 0,
-// When the repeatStr 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 if count is 0", () => {
+  const str = "hello";
+  const count = 0;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("");
+});
 
-// case: Negative Count:
-// 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 or return an appropriate error message, as negative counts are not valid.
+test("should throw an error if count is negative", () => {
+  const str = "hello";
+  const count = -1;
+  const repeatedStr = repeatStr(str, count);
+  expect(repeatedStr).toEqual("Error, negative integer");
+});