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import { createMachine } from '../src';
describe('tags', () => {  it('supports tagging states', () => {    const machine = createMachine({      initial: 'green',      states: {        green: {          tags: ['go']        },        yellow: {          tags: ['go'],          on: {            TIMER: 'red'          }        },        red: {          tags: ['stop']        }      }    });
    expect(machine.initialState.hasTag('go')).toBeTruthy();    expect(machine.transition('yellow', 'TIMER').hasTag('go')).toBeFalsy();  });
  it('supports tags in compound states', () => {    const machine = createMachine({      initial: 'red',      states: {        green: {          tags: ['go']        },        yellow: {},        red: {          tags: ['stop'],          initial: 'walk',          states: {            walk: {              tags: ['crosswalkLight']            },            wait: {              tags: ['crosswalkLight']            }          }        }      }    });
    expect(machine.initialState.hasTag('go')).toBeFalsy();    expect(machine.initialState.hasTag('stop')).toBeTruthy();    expect(machine.initialState.hasTag('crosswalkLight')).toBeTruthy();  });
  it('supports tags in parallel states', () => {    const machine = createMachine({      type: 'parallel',      states: {        foo: {          initial: 'active',          states: {            active: {              tags: 'yes'            },            inactive: {              tags: 'no'            }          }        },        bar: {          initial: 'active',          states: {            active: {              tags: 'yes',              on: {                DEACTIVATE: 'inactive'              }            },            inactive: {              tags: 'no'            }          }        }      }    });
    let state = machine.initialState;
    expect(state.tags).toEqual(new Set(['yes']));    state = machine.transition(state, 'DEACTIVATE');    expect(state.tags).toEqual(new Set(['yes', 'no']));  });
  it('sets tags correctly after not selecting any transition', () => {    const machine = createMachine({      initial: 'a',      states: {        a: {          tags: 'myTag'        }      }    });
    const state = machine.transition(machine.initialState, {      type: 'UNMATCHED'    });    expect(state.hasTag('myTag')).toBeTruthy();  });
  it('tags can be single (not array)', () => {    const machine = createMachine({      initial: 'green',      states: {        green: {          tags: 'go'        }      }    });
    expect(machine.initialState.hasTag('go')).toBeTruthy();  });
  it('stringifies to an array', () => {    const machine = createMachine({      initial: 'green',      states: {        green: {          tags: ['go', 'light']        }      }    });
    const jsonState = machine.initialState.toJSON();
    expect(jsonState.tags).toEqual(['go', 'light']);  });});