Compare test calendars to find components that do not equal

[niccokunzmann]

This contributes to #570.

• move .ics files into their folders
• create tests from the example files to check which values do not compare
• test inequality of the components/properties
• implement an equality function

[niccokunzmann]

The tests run here but weirdly they do not on my computer. There is just one failing!

    def test_parsed_calendars_are_equal_if_from_same_source(ics_file):
        """Ensure that a calendar equals the same calendar."""
        same_calendar = ics_file.__class__.from_ical(ics_file.raw_ics)
>       assert same_calendar == ics_file
E       assert VCALENDAR({'VERSION': vText('b'2.0''), 'PRODID': vText('b'icalendar-2023'')}, VEVENT({'UID': vText('b'ical-jacadzaca-3''), 'SUMMARY': vText('b" Some very different event ':'"'), 'DTSTART': vDDDTypes(2021-11-01 16:00:00+01:00, Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'})), 'DTEND': vDDDTypes(2021-11-01 16:30:00+01:00, Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'})), 'DTSTAMP': vDDDTypes(2021-10-04 15:02:45+00:00, Parameters({}))}), VEVENT({'UID': vText('b'ical-jacadzaca-4''), 'SUMMARY': vText('b' Some very different other event''), 'DTSTART': vDDDTypes(2021-11-01 16:40:00+01:00, Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'})), 'DTEND': vDDDTypes(2021-11-01 16:50:00+01:00, Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'})), 'DTSTAMP': vDDDTypes(2021-10-04 15:02:45+00:00, Parameters({}))})) == VCALENDAR({'VERSION': vText('b'2.0''), 'PRODID': vText('b'icalendar-2023'')}, VEVENT({'UID': vText('b'ical-jacadzaca-3''), 'SUMMARY': vText('b" Some very different event ':'"'), 'DTSTART': vDDDTypes(2021-11-01 16:00:00, Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'})), 'DTEND': vDDDTypes(2021-11-01 16:30:00, Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'})), 'DTSTAMP': vDDDTypes(2021-10-04 15:02:45+00:00, Parameters({}))}), VEVENT({'UID': vText('b'ical-jacadzaca-4''), 'SUMMARY': vText('b' Some very different other event''), 'DTSTART': vDDDTypes(2021-11-01 16:40:00, Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'})), 'DTEND': vDDDTypes(2021-11-01 16:50:00, Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'})), 'DTSTAMP': vDDDTypes(2021-10-04 15:02:45+00:00, Parameters({}))}))
E         Common items:
E         {'PRODID': vText('b'icalendar-2023''), 'VERSION': vText('b'2.0'')}
E         Full diff:
E           {
E            'PRODID': vText('b'icalendar-2023''),
E            'VERSION': vText('b'2.0''),
E           }

src/icalendar/tests/test_equality.py:19: AssertionError
------------------------------------------------------------- Captured stdout setup --------------------------------------------------------------
issue_526_calendar_with_different_events

Difference when the same calendar is read twice from the same source:

'DTSTART': vDDDTypes(2021-11-01 16:00:00+01:00, Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'})), ==
'DTSTART': vDDDTypes(2021-11-01 16:00:00,       Parameters({'TZID': 'Western/Central Europe', 'VALUE': 'DATE-TIME'}))

[niccokunzmann]

Please review this. I would like to make a release after this merge - it is even worth releasing before that if it takes longer.

One fix is that == was implemented but != still used the old behavior and with that a == b did not mean not a != b or vice versa. That should be a big problem if you wanted to compare calendars.

[niccokunzmann]

@angatha, if you like, you can also merge! (No pressure - I just like to ship all the contributions) Also, you can start a new release if you like. <- Please see these as invitations!

[angatha]

@angatha, if you like, you can also merge! (No pressure - I just like to ship all the contributions) Also, you can start a new release if you like. <- Please see these as invitations!

Thank you :) I haven't done a release and are bussy right now. But @jacadzaca requested a change anyway.