const GCode = require('../robot/GCode');

// Bug 6: containsMCode previously used indexOf('M1') == 0, which also matched
// M10, M11, M114, ... It must only match the standalone M1 motor command.
describe('GCode.containsMCode', () => {
  test('matches the exact M1 command', () => {
    expect(GCode.containsMCode('M1')).toBe(true);
  });

  test('matches M1 with parameters', () => {
    expect(GCode.containsMCode('M1 X10 Y20 Z30')).toBe(true);
  });

  test('does NOT match higher M-codes that start with M1', () => {
    expect(GCode.containsMCode('M10')).toBe(false);
    expect(GCode.containsMCode('M11 X1')).toBe(false);
    expect(GCode.containsMCode('M12')).toBe(false);
    expect(GCode.containsMCode('M114')).toBe(false);
  });

  test('does NOT match unrelated commands or empty input', () => {
    expect(GCode.containsMCode('G1 X1')).toBe(false);
    expect(GCode.containsMCode('')).toBe(false);
  });
});