'''tests ensuring that *the* way of doing things works'''

import datetime
from icalendar import Calendar, Event, Timezone
import pytest


def test_creating_calendar_with_unicode_fields(calendars, utc):
    ''' create a calendar with events that contain unicode characters in their fields '''
    cal = Calendar()
    cal.add('PRODID', '-//Plönë.org//NONSGML plone.app.event//EN')
    cal.add('VERSION', '2.0')
    cal.add('X-WR-CALNAME', 'äöü ÄÖÜ €')
    cal.add('X-WR-CALDESC', 'test non ascii: äöü ÄÖÜ €')
    cal.add('X-WR-RELCALID', '12345')

    event = Event()
    event.add('DTSTART', datetime.datetime(2010, 10, 10, 10, 0, 0, tzinfo=utc))
    event.add('DTEND', datetime.datetime(2010, 10, 10, 12, 0, 0, tzinfo=utc))
    event.add('CREATED', datetime.datetime(2010, 10, 10, 0, 0, 0, tzinfo=utc))
    event.add('UID', '123456')
    event.add('SUMMARY', 'Non-ASCII Test: ÄÖÜ äöü €')
    event.add('DESCRIPTION', 'icalendar should be able to de/serialize non-ascii.')
    event.add('LOCATION', 'Tribstrül')
    cal.add_component(event)

    # test_create_event_simple
    event1 = Event()
    event1.add('DTSTART', datetime.datetime(2010, 10, 10, 0, 0, 0, tzinfo=utc))
    event1.add('SUMMARY', 'åäö')
    cal.add_component(event1)

    # test_unicode_parameter_name
    # test for issue #80 https://github.com/collective/icalendar/issues/80
    event2 = Event()
    event2.add('DESCRIPTION', 'äöüßÄÖÜ')
    cal.add_component(event2)

    assert cal.to_ical() == calendars.created_calendar_with_unicode_fields.raw_ics


@pytest.mark.parametrize("component,example",
    [
        (Calendar, "example"),
        (Calendar, "example.ics"),
        (Event, "event_with_rsvp"),
        (Timezone, "pacific_fiji"),
    ]
)
def test_component_has_examples(tzp, calendars, timezones, events, component, example):
    """Check that the examples function works."""
    mapping = {Calendar: calendars, Event: events, Timezone: timezones}
    example_component = component.example(example)
    expected_component = mapping[component][example]
    assert example_component == expected_component


def test_invalid_examples_lists_the_others():
    """We need a bit of guidance here."""
    with pytest.raises(ValueError) as e:
        Calendar.example("does not exist")
    assert "example.ics" in str(e.value)