from sure import expect
from freezegun import freeze_time

from moto.swf.models import HistoryEvent


@freeze_time("2015-01-01 12:00:00")
def test_history_event_creation():
    he = HistoryEvent(123, "DecisionTaskStarted", scheduled_event_id=2)
    he.event_id.should.equal(123)
    he.event_type.should.equal("DecisionTaskStarted")
    he.event_timestamp.should.equal(1420113600.0)

@freeze_time("2015-01-01 12:00:00")
def test_history_event_to_dict_representation():
    he = HistoryEvent(123, "DecisionTaskStarted", scheduled_event_id=2)
    he.to_dict().should.equal({
        "eventId": 123,
        "eventType": "DecisionTaskStarted",
        "eventTimestamp": 1420113600.0,
        "decisionTaskStartedEventAttributes": {
            "scheduledEventId": 2
        }
    })

def test_history_event_breaks_on_initialization_if_not_implemented():
    HistoryEvent.when.called_with(
        123, "UnknownHistoryEvent"
    ).should.throw(NotImplementedError)