from habitmove.parser import Parser
from inspect import signature


def test_parser_interface_exists():
    sut = Parser()
    assert type(sut) == Parser


def test_parser_interface_contains_methods():
    sut = Parser()
    assert sut.__getattribute__("parse") != None
    assert sut.__getattribute__("from_file") != None
    assert sut.__getattribute__("extract_version") != None
    assert sut.__getattribute__("extract_trackers") != None
    assert sut.__getattribute__("extract_events") != None


def test_parser_from_file_returns_parser():
    sut = Parser().from_file
    assert signature(sut).return_annotation == "Parser"


def test_parser_parse_returns_Import_Data():
    sut = Parser().parse
    assert signature(sut).return_annotation == "ImportData"


def test_parser_version_returns_String():
    sut = Parser().extract_version
    assert signature(sut).return_annotation == "str"


def test_parser_extract_trackers_returns_tracker_list():
    sut = Parser().extract_trackers
    assert signature(sut).return_annotation == "list[Tracker]"


def test_parser_extract_events_returns_event_list():
    sut = Parser().extract_events
    assert signature(sut).return_annotation == "list[Event]"