repeat-str.test.js

// Implement a function repeatStr
const repeatStr = require("./repeat-str");
// Given a target string `str` and a positive integer `count`,
// When the repeatStr function is called with these inputs,
// Then it should:

// Case: handle multiple repetitions:
// Given a target string `str` and a positive integer `count` greater than 1,
// When the repeatStr function is called with these inputs,
// Then it should return a string that contains the original `str` repeated `count` times.

test("should repeat the string count times", () => {
  const str = "hello";
  const count = 3;
  const repeatedStr = repeatStr(str, count);
  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.
test("should return original string without repetition ", () => {
  expect(repeatStr("edak", 1)).toEqual("edak");
});

// 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.
test("should return an 'empty string' for count value of 0", () => {
  expect(repeatStr("edak", 0)).toEqual("");
});

// Case: Handle 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, as negative counts are not valid.

test("should throw and error if count value is negative integer", () => {
  expect(() => repeatStr("edak", -1)).toThrow("Invalid count");
});