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import { Machine, interpret, assign, AnyEventObject } from '../src';
const finalMachine = Machine({  id: 'final',  initial: 'green',  states: {    green: {      on: {        TIMER: 'yellow'      }    },    yellow: { on: { TIMER: 'red' } },    red: {      type: 'parallel',      states: {        crosswalk1: {          initial: 'walk',          states: {            walk: {              on: { PED_WAIT: 'wait' }            },            wait: {              on: { PED_STOP: 'stop' }            },            stop: {              type: 'final',              data: { signal: 'stop' }            }          },          onDone: {            cond: (_, e) => e.data.signal === 'stop',            actions: 'stopCrosswalk1'          }        },        crosswalk2: {          initial: 'walk',          states: {            walk: {              on: { PED_WAIT: 'wait' }            },            wait: {              on: { PED_STOP: 'stop' }            },            stop: {              on: { PED_STOP: 'stop2' }            },            stop2: {              type: 'final'            }          },          onDone: {            actions: 'stopCrosswalk2'          }        }      },      onDone: {        target: 'green',        actions: 'prepareGreenLight'      }    }  },  onDone: {    // this action should never occur because final states are not direct children of machine    actions: 'shouldNeverOccur'  }});
describe('final states', () => {  it('should emit the "done.state.final.red" event when all nested states are in their final states', () => {    const redState = finalMachine.transition('yellow', 'TIMER');    expect(redState.value).toEqual({      red: {        crosswalk1: 'walk',        crosswalk2: 'walk'      }    });    const waitState = finalMachine.transition(redState, 'PED_WAIT');    expect(waitState.value).toEqual({      red: {        crosswalk1: 'wait',        crosswalk2: 'wait'      }    });    const stopState = finalMachine.transition(waitState, 'PED_STOP');    expect(stopState.value).toEqual({      red: {        crosswalk1: 'stop',        crosswalk2: 'stop'      }    });
    expect(stopState.actions).toEqual([      { type: 'stopCrosswalk1', exec: undefined }    ]);
    const stopState2 = finalMachine.transition(stopState, 'PED_STOP');
    expect(stopState2.actions).toEqual([      { type: 'stopCrosswalk2', exec: undefined },      { type: 'prepareGreenLight', exec: undefined }    ]);
    const greenState = finalMachine.transition(stopState, 'TIMER');    expect(greenState.actions).toHaveLength(0);  });
  it('should execute final child state actions first', () => {    const nestedFinalMachine = Machine({      id: 'nestedFinal',      initial: 'foo',      states: {        foo: {          initial: 'bar',          onDone: { actions: 'fooAction' },          states: {            bar: {              initial: 'baz',              onDone: 'barFinal',              states: {                baz: {                  type: 'final',                  onEntry: 'bazAction'                }              }            },            barFinal: {              type: 'final',              onDone: { actions: 'barAction' }            }          }        }      }    });
    const { initialState } = nestedFinalMachine;
    expect(initialState.actions.map((a) => a.type)).toEqual([      'bazAction',      'barAction',      'fooAction'    ]);  });
  it('should call data expressions on nested final nodes', (done) => {    interface Ctx {      revealedSecret?: string;    }
    const machine = Machine<Ctx>({      initial: 'secret',      context: {        revealedSecret: undefined      },      states: {        secret: {          initial: 'wait',          states: {            wait: {              on: {                REQUEST_SECRET: 'reveal'              }            },            reveal: {              type: 'final',              data: {                secret: () => 'the secret'              }            }          },          onDone: {            target: 'success',            actions: assign<Ctx, AnyEventObject>({              revealedSecret: (_, event) => {                return event.data.secret;              }            })          }        },        success: {          type: 'final'        }      }    });
    let _context: any;
    const service = interpret(machine)      .onTransition((state) => (_context = state.context))      .onDone(() => {        expect(_context).toEqual({ revealedSecret: 'the secret' });        done();      })      .start();
    service.send('REQUEST_SECRET');  });
  it("should only call data expression once when entering root's final state", () => {    const spy = jest.fn();    const machine = Machine({      initial: 'start',      states: {        start: {          on: {            FINISH: 'end'          }        },        end: {          type: 'final',          data: spy        }      }    });
    const service = interpret(machine).start();    service.send({ type: 'FINISH', value: 1 });    expect(spy).toBeCalledTimes(1);  });});