Testing for invalid inputs

main.test.js

describe('bowlingScore error boundaries', () => {
  test('it should return error message for too few rolls', () => {
    const inputRolls = [1, 2, 3]; // ARRANGE

    const gameScore = bowlingScore(inputRolls); // ACT

    expect(gameScore).toBe('Invalid rolls input'); // ASSERT
  });
  test('it should return error message for too many rolls', () => {
    const inputRolls = [
      1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
      22, 23,
    ]; // ARRANGE

    const gameScore = bowlingScore(inputRolls); // ACT

    expect(gameScore).toBe('Invalid rolls input'); // ASSERT
  });
  test('it should return error message if negative numbers', () => {
    const inputRolls = [
      1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, -19, 20,
    ]; // ARRANGE

    const gameScore = bowlingScore(inputRolls); // ACT
    
    expect(gameScore).toBe('Invalid rolls input'); // ASSERT
  });
  test('it should return error message non-zero number after strike', () => {
    const inputRolls = [
      1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 10, 2, 20,
    ];
    const gameScore = bowlingScore(inputRolls);
    expect(gameScore).toBe(0);
  });
  test('it should return error message sum in frame is bigger than 10', () => {
    const inputRolls = [
      1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 10, 2, 20,
    ];
    const gameScore = bowlingScore(inputRolls);
    expect(gameScore).toBe(0);
  });
});