# This file is part of Radicale Server - Calendar Server
# Copyright © 2012-2017 Guillaume Ayoub
#
# This library is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Radicale.  If not, see <http://www.gnu.org/licenses/>.

"""
Radicale tests with simple requests.

"""

import base64
import os
import posixpath
import shutil
import tempfile
import xml.etree.ElementTree as ET

import pytest

from radicale import Application, config

from . import BaseTest
from .helpers import get_file_content


class BaseRequestsMixIn:
    """Tests with simple requests."""

    def test_root(self):
        """GET request at "/"."""
        status, _, answer = self.request("GET", "/")
        assert status == 302
        assert answer == "Redirected to .web"

    def test_script_name(self):
        """GET request at "/" with SCRIPT_NAME."""
        status, _, answer = self.request("GET", "/", SCRIPT_NAME="/radicale")
        assert status == 302
        assert answer == "Redirected to .web"
        status, _, answer = self.request("GET", "", SCRIPT_NAME="/radicale")
        assert status == 302
        assert answer == "Redirected to radicale/.web"

    def test_add_event(self):
        """Add an event."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        event = get_file_content("event1.ics")
        path = "/calendar.ics/event1.ics"
        status, _, _ = self.request("PUT", path, event)
        assert status == 201
        status, headers, answer = self.request("GET", path)
        assert status == 200
        assert "ETag" in headers
        assert "VEVENT" in answer
        assert "Event" in answer
        assert "UID:event" in answer

    def test_add_event_without_uid(self):
        """Add an event without UID."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        event = get_file_content("event1.ics").replace("UID:event1\n", "")
        assert "\nUID:" not in event
        path = "/calendar.ics/event.ics"
        status, _, _ = self.request("PUT", path, event)
        assert status == 201
        status, _, answer = self.request("GET", path)
        assert status == 200
        uids = []
        for line in answer.split("\r\n"):
            if line.startswith("UID:"):
                uids.append(line[len("UID:"):])
        assert len(uids) == 1 and uids[0]
        # Overwrite the event with an event without UID and check that the UID
        # is still the same
        status, _, _ = self.request("PUT", path, event)
        assert status == 201
        status, _, answer = self.request("GET", path)
        assert status == 200
        assert "\r\nUID:%s\r\n" % uids[0] in answer

    def test_add_todo(self):
        """Add a todo."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        todo = get_file_content("todo1.ics")
        path = "/calendar.ics/todo1.ics"
        status, _, _ = self.request("PUT", path, todo)
        assert status == 201
        status, headers, answer = self.request("GET", path)
        assert status == 200
        assert "ETag" in headers
        assert "VTODO" in answer
        assert "Todo" in answer
        assert "UID:todo" in answer

    def _create_addressbook(self, path):
        return self.request(
            "MKCOL", path, """\
<?xml version="1.0" encoding="UTF-8" ?>
<create xmlns="DAV:" xmlns:CR="urn:ietf:params:xml:ns:carddav">
  <set>
    <prop>
      <resourcetype>
        <collection />
        <CR:addressbook />
      </resourcetype>
    </prop>
  </set>
</create>""")

    def test_add_contact(self):
        """Add a contact."""
        status, _, _ = self._create_addressbook("/contacts.vcf/")
        assert status == 201
        contact = get_file_content("contact1.vcf")
        path = "/contacts.vcf/contact.vcf"
        status, _, _ = self.request("PUT", path, contact)
        assert status == 201
        status, headers, answer = self.request("GET", path)
        assert status == 200
        assert "ETag" in headers
        assert "VCARD" in answer
        assert "UID:contact1" in answer
        status, _, answer = self.request("GET", path)
        assert status == 200
        assert "UID:contact1" in answer

    def test_add_contact_without_uid(self):
        """Add a contact."""
        status, _, _ = self._create_addressbook("/contacts.vcf/")
        assert status == 201
        contact = get_file_content("contact1.vcf").replace("UID:contact1\n",
                                                           "")
        assert "\nUID" not in contact
        path = "/contacts.vcf/contact.vcf"
        status, _, _ = self.request("PUT", path, contact)
        assert status == 201
        status, _, answer = self.request("GET", path)
        assert status == 200
        uids = []
        for line in answer.split("\r\n"):
            if line.startswith("UID:"):
                uids.append(line[len("UID:"):])
        assert len(uids) == 1 and uids[0]
        # Overwrite the contact with an contact without UID and check that the
        # UID is still the same
        status, _, _ = self.request("PUT", path, contact)
        assert status == 201
        status, _, answer = self.request("GET", path)
        assert status == 200
        assert "\r\nUID:%s\r\n" % uids[0] in answer

    def test_update(self):
        """Update an event."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        event = get_file_content("event1.ics")
        path = "/calendar.ics/event1.ics"
        status, _, _ = self.request("PUT", path, event)
        assert status == 201
        status, headers, answer = self.request("GET", path)
        assert "ETag" in headers
        assert status == 200
        assert "VEVENT" in answer
        assert "Event" in answer
        assert "UID:event" in answer
        assert "DTSTART;TZID=Europe/Paris:20130901T180000" in answer
        assert "DTEND;TZID=Europe/Paris:20130901T190000" in answer

        # Then we send another PUT request
        event = get_file_content("event1-prime.ics")
        status, _, _ = self.request("PUT", path, event)
        assert status == 201
        status, _, answer = self.request("GET", "/calendar.ics/")
        assert status == 200
        assert answer.count("BEGIN:VEVENT") == 1

        status, headers, answer = self.request("GET", path)
        assert status == 200
        assert "ETag" in headers
        assert "VEVENT" in answer
        assert "Event" in answer
        assert "UID:event" in answer
        assert "DTSTART;TZID=Europe/Paris:20130901T180000" not in answer
        assert "DTEND;TZID=Europe/Paris:20130901T190000" not in answer
        assert "DTSTART;TZID=Europe/Paris:20140901T180000" in answer
        assert "DTEND;TZID=Europe/Paris:20140901T210000" in answer

    def test_put_whole_calendar(self):
        """Create and overwrite a whole calendar."""
        status, _, _ = self.request(
            "PUT", "/calendar.ics/", "BEGIN:VCALENDAR\r\nEND:VCALENDAR")
        assert status == 201
        event1 = get_file_content("event1.ics")
        status, _, _ = self.request(
            "PUT", "/calendar.ics/test_event.ics", event1)
        assert status == 201
        # Overwrite
        events = get_file_content("event_multiple.ics")
        status, _, _ = self.request("PUT", "/calendar.ics/", events)
        assert status == 201
        status, _, _ = self.request("GET", "/calendar.ics/test_event.ics")
        assert status == 404
        status, _, answer = self.request("GET", "/calendar.ics/")
        assert status == 200
        assert "\r\nUID:event\r\n" in answer and "\r\nUID:todo\r\n" in answer
        assert "\r\nUID:event1\r\n" not in answer

    def test_put_whole_calendar_without_uids(self):
        """Create a whole calendar without UID."""
        event = get_file_content("event_multiple.ics")
        event = event.replace("UID:event\n", "").replace("UID:todo\n", "")
        assert "\nUID:" not in event
        status, _, _ = self.request("PUT", "/calendar.ics/", event)
        assert status == 201
        status, _, answer = self.request("GET", "/calendar.ics")
        assert status == 200
        uids = []
        for line in answer.split("\r\n"):
            if line.startswith("UID:"):
                uids.append(line[len("UID:"):])
        assert len(uids) == 2
        for i, uid1 in enumerate(uids):
            assert uid1
            for uid2 in uids[i + 1:]:
                assert uid1 != uid2

    def test_put_whole_addressbook(self):
        """Create and overwrite a whole addressbook."""
        contacts = get_file_content("contact_multiple.vcf")
        status, _, _ = self.request("PUT", "/contacts.vcf/", contacts)
        assert status == 201
        status, _, answer = self.request("GET", "/contacts.vcf/")
        assert status == 200
        assert ("\r\nUID:contact1\r\n" in answer and
                "\r\nUID:contact2\r\n" in answer)

    def test_put_whole_addressbook_without_uids(self):
        """Create a whole addressbook without UID."""
        contacts = get_file_content("contact_multiple.vcf")
        contacts = contacts.replace("UID:contact1\n", "").replace(
            "UID:contact2\n", "")
        assert "\nUID:" not in contacts
        status, _, _ = self.request("PUT", "/contacts.vcf/", contacts)
        assert status == 201
        status, _, answer = self.request("GET", "/contacts.vcf")
        assert status == 200
        uids = []
        for line in answer.split("\r\n"):
            if line.startswith("UID:"):
                uids.append(line[len("UID:"):])
        assert len(uids) == 2
        for i, uid1 in enumerate(uids):
            assert uid1
            for uid2 in uids[i + 1:]:
                assert uid1 != uid2

    def test_delete(self):
        """Delete an event."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        event = get_file_content("event1.ics")
        path = "/calendar.ics/event1.ics"
        status, _, _ = self.request("PUT", path, event)
        assert status == 201
        # Then we send a DELETE request
        status, _, answer = self.request("DELETE", path)
        assert status == 200
        assert "href>%s</" % path in answer
        status, _, answer = self.request("GET", "/calendar.ics/")
        assert status == 200
        assert "VEVENT" not in answer

    def test_mkcalendar(self):
        """Make a calendar."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        status, _, answer = self.request("GET", "/calendar.ics/")
        assert status == 200
        assert "BEGIN:VCALENDAR" in answer
        assert "END:VCALENDAR" in answer

    def test_move(self):
        """Move a item."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        event = get_file_content("event1.ics")
        path1 = "/calendar.ics/event1.ics"
        path2 = "/calendar.ics/event2.ics"
        status, _, _ = self.request("PUT", path1, event)
        assert status == 201
        status, _, _ = self.request(
            "MOVE", path1, HTTP_DESTINATION=path2, HTTP_HOST="")
        assert status == 201
        status, _, _ = self.request("GET", path1)
        assert status == 404
        status, _, _ = self.request("GET", path2)
        assert status == 200

    def test_head(self):
        status, _, _ = self.request("HEAD", "/")
        assert status == 302

    def test_options(self):
        status, headers, _ = self.request("OPTIONS", "/")
        assert status == 200
        assert "DAV" in headers

    def test_delete_collection(self):
        """Delete a collection."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        event = get_file_content("event1.ics")
        self.request("PUT", "/calendar.ics/event1.ics", event)
        status, _, answer = self.request("DELETE", "/calendar.ics/")
        assert status == 200
        assert "href>/calendar.ics/</" in answer
        status, _, _ = self.request("GET", "/calendar.ics/")
        assert status == 404

    def test_delete_root_collection(self):
        """Delete the root collection."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        event = get_file_content("event1.ics")
        status, _, _ = self.request("PUT", "/event1.ics", event)
        assert status == 201
        status, _, _ = self.request("PUT", "/calendar.ics/event1.ics", event)
        assert status == 201
        status, _, answer = self.request("DELETE", "/")
        assert status == 200
        assert "href>/</" in answer
        status, _, _ = self.request("GET", "/calendar.ics/")
        assert status == 404
        status, _, _ = self.request("GET", "/event1.ics")
        assert status == 404

    def test_propfind(self):
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        event = get_file_content("event1.ics")
        event_path = posixpath.join(calendar_path, "event.ics")
        status, _, _ = self.request("PUT", event_path, event)
        assert status == 201
        status, _, answer = self.request("PROPFIND", "/", HTTP_DEPTH="1")
        assert status == 207
        assert "href>/</" in answer
        assert "href>%s</" % calendar_path in answer
        status, _, answer = self.request(
            "PROPFIND", calendar_path, HTTP_DEPTH="1")
        assert status == 207
        assert "href>%s</" % calendar_path in answer
        assert "href>%s</" % event_path in answer

    def test_proppatch(self):
        """Write a property and read it back."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        proppatch = get_file_content("proppatch1.xml")
        status, _, answer = self.request(
            "PROPPATCH", "/calendar.ics/", proppatch)
        assert status == 207
        assert "calendar-color" in answer
        assert "200 OK</status" in answer
        # Read property back
        propfind = get_file_content("propfind1.xml")
        status, _, answer = self.request(
            "PROPFIND", "/calendar.ics/", propfind)
        assert status == 207
        assert ":calendar-color>#BADA55</" in answer
        assert "200 OK</status" in answer

    def test_put_whole_calendar_multiple_events_with_same_uid(self):
        """Add two events with the same UID."""
        status, _, _ = self.request(
            "PUT", "/calendar.ics/", get_file_content("event2.ics"))
        assert status == 201
        status, _, answer = self.request(
            "REPORT", "/calendar.ics/",
            """<?xml version="1.0" encoding="utf-8" ?>
               <C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav">
                 <D:prop xmlns:D="DAV:"><D:getetag/></D:prop>
               </C:calendar-query>""")
        assert status == 207
        assert answer.count("<getetag>") == 1
        status, _, answer = self.request("GET", "/calendar.ics/")
        assert status == 200
        assert answer.count("BEGIN:VEVENT") == 2

    def _test_filter(self, filters, kind="event", items=1):
        filters_text = "".join(
            "<C:filter>%s</C:filter>" % filter_ for filter_ in filters)
        status, _, _ = self.request("DELETE", "/calendar.ics/")
        assert status in (200, 404)
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        for i in range(items):
            filename = "{}{}.ics".format(kind, i + 1)
            event = get_file_content(filename)
            status, _, _ = self.request(
                "PUT", "/calendar.ics/%s" % filename, event)
            assert status == 201
        status, _, answer = self.request(
            "REPORT", "/calendar.ics",
            """<?xml version="1.0" encoding="utf-8" ?>
               <C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav">
                 <D:prop xmlns:D="DAV:">
                   <D:getetag/>
                 </D:prop>
                 %s
               </C:calendar-query>""" % filters_text)
        assert status == 207
        return answer

    def test_calendar_empty_filter(self):
        self._test_filter([""])

    def test_calendar_tag_filter(self):
        """Report request with tag-based filter on calendar."""
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR"></C:comp-filter>"""])

    def test_item_tag_filter(self):
        """Report request with tag-based filter on an item."""
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT"></C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO"></C:comp-filter>
            </C:comp-filter>"""])

    def test_item_not_tag_filter(self):
        """Report request with tag-based is-not filter on an item."""
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:is-not-defined />
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:is-not-defined />
              </C:comp-filter>
            </C:comp-filter>"""])

    def test_item_prop_filter(self):
        """Report request with prop-based filter on an item."""
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="SUMMARY"></C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="UNKNOWN"></C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])

    def test_item_not_prop_filter(self):
        """Report request with prop-based is-not filter on an item."""
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="SUMMARY">
                  <C:is-not-defined />
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="UNKNOWN">
                  <C:is-not-defined />
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])

    def test_mutiple_filters(self):
        """Report request with multiple filters on an item."""
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="SUMMARY">
                  <C:is-not-defined />
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>""", """
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="UNKNOWN">
                  <C:is-not-defined />
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="SUMMARY"></C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>""", """
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="UNKNOWN">
                  <C:is-not-defined />
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="SUMMARY"></C:prop-filter>
                <C:prop-filter name="UNKNOWN">
                  <C:is-not-defined />
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])

    def test_text_match_filter(self):
        """Report request with text-match filter on calendar."""
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="SUMMARY">
                  <C:text-match>event</C:text-match>
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="UNKNOWN">
                  <C:text-match>event</C:text-match>
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="SUMMARY">
                  <C:text-match>unknown</C:text-match>
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="SUMMARY">
                  <C:text-match negate-condition="yes">event</C:text-match>
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])

    def test_param_filter(self):
        """Report request with param-filter on calendar."""
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="ATTENDEE">
                  <C:param-filter name="PARTSTAT">
                    <C:text-match collation="i;ascii-casemap"
                    >ACCEPTED</C:text-match>
                  </C:param-filter>
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="ATTENDEE">
                  <C:param-filter name="PARTSTAT">
                    <C:text-match collation="i;ascii-casemap"
                    >UNKNOWN</C:text-match>
                  </C:param-filter>
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" not in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="ATTENDEE">
                  <C:param-filter name="PARTSTAT">
                    <C:is-not-defined />
                  </C:param-filter>
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])
        assert "href>/calendar.ics/event1.ics</" in self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="ATTENDEE">
                  <C:param-filter name="UNKNOWN">
                    <C:is-not-defined />
                  </C:param-filter>
                </C:prop-filter>
              </C:comp-filter>
            </C:comp-filter>"""])

    def test_time_range_filter_events(self):
        """Report request with time-range filter on events."""
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20130801T000000Z" end="20131001T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "event", items=5)
        assert "href>/calendar.ics/event1.ics</" in answer
        assert "href>/calendar.ics/event2.ics</" in answer
        assert "href>/calendar.ics/event3.ics</" in answer
        assert "href>/calendar.ics/event4.ics</" in answer
        assert "href>/calendar.ics/event5.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:prop-filter name="ATTENDEE">
                  <C:param-filter name="PARTSTAT">
                    <C:is-not-defined />
                  </C:param-filter>
                </C:prop-filter>
                <C:time-range start="20130801T000000Z" end="20131001T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], items=5)
        assert "href>/calendar.ics/event1.ics</" not in answer
        assert "href>/calendar.ics/event2.ics</" not in answer
        assert "href>/calendar.ics/event3.ics</" not in answer
        assert "href>/calendar.ics/event4.ics</" not in answer
        assert "href>/calendar.ics/event5.ics</" not in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20130902T000000Z" end="20131001T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], items=5)
        assert "href>/calendar.ics/event1.ics</" not in answer
        assert "href>/calendar.ics/event2.ics</" in answer
        assert "href>/calendar.ics/event3.ics</" in answer
        assert "href>/calendar.ics/event4.ics</" in answer
        assert "href>/calendar.ics/event5.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20130903T000000Z" end="20130908T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], items=5)
        assert "href>/calendar.ics/event1.ics</" not in answer
        assert "href>/calendar.ics/event2.ics</" not in answer
        assert "href>/calendar.ics/event3.ics</" in answer
        assert "href>/calendar.ics/event4.ics</" in answer
        assert "href>/calendar.ics/event5.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20130903T000000Z" end="20130904T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], items=5)
        assert "href>/calendar.ics/event1.ics</" not in answer
        assert "href>/calendar.ics/event2.ics</" not in answer
        assert "href>/calendar.ics/event3.ics</" in answer
        assert "href>/calendar.ics/event4.ics</" not in answer
        assert "href>/calendar.ics/event5.ics</" not in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20130805T000000Z" end="20130810T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], items=5)
        assert "href>/calendar.ics/event1.ics</" not in answer
        assert "href>/calendar.ics/event2.ics</" not in answer
        assert "href>/calendar.ics/event3.ics</" not in answer
        assert "href>/calendar.ics/event4.ics</" not in answer
        assert "href>/calendar.ics/event5.ics</" not in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20170701T060000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], items=7)
        # HACK: VObject doesn't match RECURRENCE-ID to recurrences, the
        # overwritten recurrence is still used for filtering.
        assert "href>/calendar.ics/event6.ics</" in answer
        assert "href>/calendar.ics/event7.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20170701T080000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], items=7)
        assert "href>/calendar.ics/event6.ics</" not in answer
        assert "href>/calendar.ics/event7.ics</" not in answer

    def test_time_range_filter_events_rrule(self):
        """Report request with time-range filter on events with rrules."""
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20130801T000000Z" end="20131001T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "event", items=2)
        assert "href>/calendar.ics/event1.ics</" in answer
        assert "href>/calendar.ics/event2.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20140801T000000Z" end="20141001T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "event", items=2)
        assert "href>/calendar.ics/event1.ics</" not in answer
        assert "href>/calendar.ics/event2.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20120801T000000Z" end="20121001T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "event", items=2)
        assert "href>/calendar.ics/event1.ics</" not in answer
        assert "href>/calendar.ics/event2.ics</" not in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VEVENT">
                <C:time-range start="20130903T000000Z" end="20130907T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "event", items=2)
        assert "href>/calendar.ics/event1.ics</" not in answer
        assert "href>/calendar.ics/event2.ics</" not in answer

    def test_time_range_filter_todos(self):
        """Report request with time-range filter on todos."""
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20130801T000000Z" end="20131001T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=8)
        assert "href>/calendar.ics/todo1.ics</" in answer
        assert "href>/calendar.ics/todo2.ics</" in answer
        assert "href>/calendar.ics/todo3.ics</" in answer
        assert "href>/calendar.ics/todo4.ics</" in answer
        assert "href>/calendar.ics/todo5.ics</" in answer
        assert "href>/calendar.ics/todo6.ics</" in answer
        assert "href>/calendar.ics/todo7.ics</" in answer
        assert "href>/calendar.ics/todo8.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20130901T160000Z" end="20130901T183000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=8)
        assert "href>/calendar.ics/todo1.ics</" not in answer
        assert "href>/calendar.ics/todo2.ics</" in answer
        assert "href>/calendar.ics/todo3.ics</" in answer
        assert "href>/calendar.ics/todo4.ics</" not in answer
        assert "href>/calendar.ics/todo5.ics</" not in answer
        assert "href>/calendar.ics/todo6.ics</" not in answer
        assert "href>/calendar.ics/todo7.ics</" in answer
        assert "href>/calendar.ics/todo8.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20130903T160000Z" end="20130901T183000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=8)
        assert "href>/calendar.ics/todo2.ics</" not in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20130903T160000Z" end="20130901T173000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=8)
        assert "href>/calendar.ics/todo2.ics</" not in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20130903T160000Z" end="20130903T173000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=8)
        assert "href>/calendar.ics/todo3.ics</" not in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20130903T160000Z" end="20130803T203000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=8)
        assert "href>/calendar.ics/todo7.ics</" in answer

    def test_time_range_filter_todos_rrule(self):
        """Report request with time-range filter on todos with rrules."""
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20130801T000000Z" end="20131001T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=2)
        assert "href>/calendar.ics/todo1.ics</" in answer
        assert "href>/calendar.ics/todo2.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20140801T000000Z" end="20141001T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=2)
        assert "href>/calendar.ics/todo1.ics</" not in answer
        assert "href>/calendar.ics/todo2.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20140902T000000Z" end="20140903T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=2)
        assert "href>/calendar.ics/todo1.ics</" not in answer
        assert "href>/calendar.ics/todo2.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VTODO">
                <C:time-range start="20140904T000000Z" end="20140914T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "todo", items=2)
        assert "href>/calendar.ics/todo1.ics</" not in answer
        assert "href>/calendar.ics/todo2.ics</" not in answer

    def test_time_range_filter_journals(self):
        """Report request with time-range filter on journals."""
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VJOURNAL">
                <C:time-range start="19991229T000000Z" end="20000202T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "journal", items=3)
        assert "href>/calendar.ics/journal1.ics</" not in answer
        assert "href>/calendar.ics/journal2.ics</" in answer
        assert "href>/calendar.ics/journal3.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VJOURNAL">
                <C:time-range start="19991229T000000Z" end="20000202T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "journal", items=3)
        assert "href>/calendar.ics/journal1.ics</" not in answer
        assert "href>/calendar.ics/journal2.ics</" in answer
        assert "href>/calendar.ics/journal3.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VJOURNAL">
                <C:time-range start="19981229T000000Z" end="19991012T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "journal", items=3)
        assert "href>/calendar.ics/journal1.ics</" not in answer
        assert "href>/calendar.ics/journal2.ics</" not in answer
        assert "href>/calendar.ics/journal3.ics</" not in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VJOURNAL">
                <C:time-range start="20131229T000000Z" end="21520202T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "journal", items=3)
        assert "href>/calendar.ics/journal1.ics</" not in answer
        assert "href>/calendar.ics/journal2.ics</" in answer
        assert "href>/calendar.ics/journal3.ics</" not in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VJOURNAL">
                <C:time-range start="20000101T000000Z" end="20000202T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "journal", items=3)
        assert "href>/calendar.ics/journal1.ics</" not in answer
        assert "href>/calendar.ics/journal2.ics</" in answer
        assert "href>/calendar.ics/journal3.ics</" in answer

    def test_time_range_filter_journals_rrule(self):
        """Report request with time-range filter on journals with rrules."""
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VJOURNAL">
                <C:time-range start="19991229T000000Z" end="20000202T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "journal", items=2)
        assert "href>/calendar.ics/journal1.ics</" not in answer
        assert "href>/calendar.ics/journal2.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VJOURNAL">
                <C:time-range start="20051229T000000Z" end="20060202T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "journal", items=2)
        assert "href>/calendar.ics/journal1.ics</" not in answer
        assert "href>/calendar.ics/journal2.ics</" in answer
        answer = self._test_filter(["""
            <C:comp-filter name="VCALENDAR">
              <C:comp-filter name="VJOURNAL">
                <C:time-range start="20060102T000000Z" end="20060202T000000Z"/>
              </C:comp-filter>
            </C:comp-filter>"""], "journal", items=2)
        assert "href>/calendar.ics/journal1.ics</" not in answer
        assert "href>/calendar.ics/journal2.ics</" not in answer

    def test_report_item(self):
        """Test report request on an item"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        event = get_file_content("event1.ics")
        event_path = posixpath.join(calendar_path, "event.ics")
        status, _, _ = self.request("PUT", event_path, event)
        assert status == 201
        status, _, answer = self.request(
            "REPORT", event_path,
            """<?xml version="1.0" encoding="utf-8" ?>
               <C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav">
                 <D:prop xmlns:D="DAV:">
                   <D:getetag />
                 </D:prop>
               </C:calendar-query>""")
        assert status == 207
        assert "href>%s<" % event_path in answer

    def _report_sync_token(self, calendar_path, sync_token=None):
        sync_token_xml = (
            "<sync-token><![CDATA[%s]]></sync-token>" % sync_token
            if sync_token else "<sync-token />")
        status, _, answer = self.request(
            "REPORT", calendar_path,
            """<?xml version="1.0" encoding="utf-8" ?>
               <sync-collection xmlns="DAV:">
                 <prop>
                   <getetag />
                 </prop>
                 %s
               </sync-collection>""" % sync_token_xml)
        if sync_token and status == 412:
            return None, None
        assert status == 207
        xml = ET.fromstring(answer)
        sync_token = xml.find("{DAV:}sync-token").text.strip()
        assert sync_token
        return sync_token, xml

    def test_report_sync_collection_no_change(self):
        """Test sync-collection report without modifying the collection"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        event = get_file_content("event1.ics")
        event_path = posixpath.join(calendar_path, "event.ics")
        status, _, _ = self.request("PUT", event_path, event)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path)
        assert xml.find("{DAV:}response") is not None
        new_sync_token, xml = self._report_sync_token(calendar_path,
                                                      sync_token)
        assert sync_token == new_sync_token
        assert xml.find("{DAV:}response") is None

    def test_report_sync_collection_add(self):
        """Test sync-collection report with an added item"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path)
        event = get_file_content("event1.ics")
        event_path = posixpath.join(calendar_path, "event.ics")
        status, _, _ = self.request("PUT", event_path, event)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path, sync_token)
        if not sync_token:
            pytest.skip("storage backend does not support sync-token")
        assert xml.find("{DAV:}response") is not None
        assert xml.find("{DAV:}response/{DAV:}status") is None

    def test_report_sync_collection_delete(self):
        """Test sync-collection report with a deleted item"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        event = get_file_content("event1.ics")
        event_path = posixpath.join(calendar_path, "event.ics")
        status, _, _ = self.request("PUT", event_path, event)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path)
        status, _, _ = self.request("DELETE", event_path)
        assert status == 200
        sync_token, xml = self._report_sync_token(calendar_path, sync_token)
        if not sync_token:
            pytest.skip("storage backend does not support sync-token")
        assert "404" in xml.find("{DAV:}response/{DAV:}status").text

    def test_report_sync_collection_create_delete(self):
        """Test sync-collection report with a created and deleted item"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path)
        event = get_file_content("event1.ics")
        event_path = posixpath.join(calendar_path, "event.ics")
        status, _, _ = self.request("PUT", event_path, event)
        assert status == 201
        status, _, _ = self.request("DELETE", event_path)
        assert status == 200
        sync_token, xml = self._report_sync_token(calendar_path, sync_token)
        if not sync_token:
            pytest.skip("storage backend does not support sync-token")
        assert "404" in xml.find("{DAV:}response/{DAV:}status").text

    def test_report_sync_collection_modify_undo(self):
        """Test sync-collection report with a modified and changed back item"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        event1 = get_file_content("event1.ics")
        event2 = get_file_content("event2.ics")
        event_path = posixpath.join(calendar_path, "event1.ics")
        status, _, _ = self.request("PUT", event_path, event1)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path)
        status, _, _ = self.request("PUT", event_path, event2)
        assert status == 201
        status, _, _ = self.request("PUT", event_path, event1)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path, sync_token)
        if not sync_token:
            pytest.skip("storage backend does not support sync-token")
        assert xml.find("{DAV:}response") is not None
        assert xml.find("{DAV:}response/{DAV:}status") is None

    def test_report_sync_collection_move(self):
        """Test sync-collection report a moved item"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        event = get_file_content("event1.ics")
        event1_path = posixpath.join(calendar_path, "event1.ics")
        event2_path = posixpath.join(calendar_path, "event2.ics")
        status, _, _ = self.request("PUT", event1_path, event)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path)
        status, _, _ = self.request(
            "MOVE", event1_path, HTTP_DESTINATION=event2_path, HTTP_HOST="")
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path, sync_token)
        if not sync_token:
            pytest.skip("storage backend does not support sync-token")
        for response in xml.findall("{DAV:}response"):
            if response.find("{DAV:}status") is None:
                assert response.find("{DAV:}href").text == event2_path
            else:
                assert "404" in response.find("{DAV:}status").text
                assert response.find("{DAV:}href").text == event1_path

    def test_report_sync_collection_move_undo(self):
        """Test sync-collection report with a moved and moved back item"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        event = get_file_content("event1.ics")
        event1_path = posixpath.join(calendar_path, "event1.ics")
        event2_path = posixpath.join(calendar_path, "event2.ics")
        status, _, _ = self.request("PUT", event1_path, event)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path)
        status, _, _ = self.request(
            "MOVE", event1_path, HTTP_DESTINATION=event2_path, HTTP_HOST="")
        assert status == 201
        status, _, _ = self.request(
            "MOVE", event2_path, HTTP_DESTINATION=event1_path, HTTP_HOST="")
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path, sync_token)
        if not sync_token:
            pytest.skip("storage backend does not support sync-token")
        created = deleted = 0
        for response in xml.findall("{DAV:}response"):
            if response.find("{DAV:}status") is None:
                assert response.find("{DAV:}href").text == event1_path
                created += 1
            else:
                assert "404" in response.find("{DAV:}status").text
                assert response.find("{DAV:}href").text == event2_path
                deleted += 1
        assert created == 1 and deleted == 1

    def test_report_sync_collection_invalid_sync_token(self):
        """Test sync-collection report with an invalid sync token"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        sync_token, xml = self._report_sync_token(
            calendar_path, "http://radicale.org/ns/sync/INVALID")
        assert not sync_token

    def test_propfind_sync_token(self):
        """Retrieve the sync-token with a propfind request"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path)
        event = get_file_content("event1.ics")
        event_path = posixpath.join(calendar_path, "event.ics")
        status, _, _ = self.request("PUT", event_path, event)
        assert status == 201
        new_sync_token, xml = self._report_sync_token(calendar_path,
                                                      sync_token)
        assert sync_token != new_sync_token

    def test_propfind_same_as_sync_collection_sync_token(self):
        """Compare sync-token property with sync-collection sync-token"""
        calendar_path = "/calendar.ics/"
        status, _, _ = self.request("MKCALENDAR", calendar_path)
        assert status == 201
        sync_token, xml = self._report_sync_token(calendar_path)
        new_sync_token, xml = self._report_sync_token(calendar_path,
                                                      sync_token)
        assert sync_token == new_sync_token

    def test_authorization(self):
        authorization = "Basic " + base64.b64encode(b"user:").decode()
        status, _, answer = self.request(
            "PROPFIND", "/",
            """<?xml version="1.0" encoding="utf-8"?>
               <propfind xmlns="DAV:">
                 <prop>
                   <current-user-principal />
                 </prop>
               </propfind>""",
            HTTP_AUTHORIZATION=authorization)
        assert status == 207
        assert "href>/user/<" in answer

    def test_authentication(self):
        """Test if server sends authentication request."""
        self.configuration["auth"]["type"] = "htpasswd"
        self.configuration["auth"]["htpasswd_filename"] = os.devnull
        self.configuration["auth"]["htpasswd_encryption"] = "plain"
        self.configuration["rights"]["type"] = "owner_only"
        self.application = Application(self.configuration, self.logger)
        status, headers, _ = self.request("MKCOL", "/user/")
        assert status in (401, 403)
        assert headers.get("WWW-Authenticate")

    def test_principal_collection_creation(self):
        """Verify existence of the principal collection."""
        status, _, _ = self.request("PROPFIND", "/user/", HTTP_AUTHORIZATION=(
            "Basic " + base64.b64encode(b"user:").decode()))
        assert status == 207

    def test_existence_of_root_collections(self):
        """Verify that the root collection always exists."""
        # Use PROPFIND because GET returns message
        status, _, _ = self.request("PROPFIND", "/")
        assert status == 207
        # it should still exist after deletion
        status, _, _ = self.request("DELETE", "/")
        assert status == 200
        status, _, _ = self.request("PROPFIND", "/")
        assert status == 207

    def test_custom_headers(self):
        if not self.configuration.has_section("headers"):
            self.configuration.add_section("headers")
        self.configuration.set("headers", "test", "123")
        # Test if header is set on success
        status, headers, _ = self.request("OPTIONS", "/")
        assert status == 200
        assert headers.get("test") == "123"
        # Test if header is set on failure
        status, headers, _ = self.request(
            "GET", "/.well-known/does not exist")
        assert status == 404
        assert headers.get("test") == "123"

    def test_missing_uid(self):
        """Verify that missing UIDs are added in a stable manner."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        event_without_uid = get_file_content("event1.ics").replace(
            "UID:event1\n", "")
        assert "UID" not in event_without_uid
        path = "/calendar.ics/event1.ics"
        status, _, _ = self.request("PUT", path, event_without_uid)
        assert status == 201
        status, _, answer = self.request("GET", path)
        assert status == 200
        uid = None
        for line in answer.split("\r\n"):
            if line.startswith("UID:"):
                uid = line[len("UID:"):]
        assert uid
        status, _, _ = self.request("PUT", path, event_without_uid)
        assert status == 201
        status, _, answer = self.request("GET", path)
        assert status == 200
        assert "UID:%s\r\n" % uid in answer


class BaseFileSystemTest(BaseTest):
    """Base class for filesystem backend tests."""
    storage_type = None

    def setup(self):
        self.configuration = config.load()
        self.configuration["storage"]["type"] = self.storage_type
        self.colpath = tempfile.mkdtemp()
        self.configuration["storage"]["filesystem_folder"] = self.colpath
        # Disable syncing to disk for better performance
        self.configuration["storage"]["filesystem_fsync"] = "False"
        # Required on Windows, doesn't matter on Unix
        self.configuration["storage"]["filesystem_close_lock_file"] = "True"
        self.application = Application(self.configuration, self.logger)

    def teardown(self):
        shutil.rmtree(self.colpath)


class TestMultiFileSystem(BaseFileSystemTest, BaseRequestsMixIn):
    """Test BaseRequests on multifilesystem."""
    storage_type = "multifilesystem"

    def test_fsync(self):
        """Create a directory and file with syncing enabled."""
        self.configuration["storage"]["filesystem_fsync"] = "True"
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201

    def test_hook(self):
        """Run hook."""
        self.configuration["storage"]["hook"] = (
            "mkdir %s" % os.path.join("collection-root", "created_by_hook"))
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        status, _, _ = self.request("PROPFIND", "/created_by_hook/")
        assert status == 207

    def test_hook_read_access(self):
        """Verify that hook is not run for read accesses."""
        self.configuration["storage"]["hook"] = (
            "mkdir %s" % os.path.join("collection-root", "created_by_hook"))
        status, _, _ = self.request("PROPFIND", "/")
        assert status == 207
        status, _, _ = self.request("PROPFIND", "/created_by_hook/")
        assert status == 404

    @pytest.mark.skipif(os.system("type flock") != 0,
                        reason="flock command not found")
    def test_hook_storage_locked(self):
        """Verify that the storage is locked when the hook runs."""
        self.configuration["storage"]["hook"] = (
            "flock -n .Radicale.lock || exit 0; exit 1")
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201

    def test_hook_principal_collection_creation(self):
        """Verify that the hooks runs when a new user is created."""
        self.configuration["storage"]["hook"] = (
            "mkdir %s" % os.path.join("collection-root", "created_by_hook"))
        status, _, _ = self.request("PROPFIND", "/", HTTP_AUTHORIZATION=(
            "Basic " + base64.b64encode(b"user:").decode()))
        assert status == 207
        status, _, _ = self.request("PROPFIND", "/created_by_hook/")
        assert status == 207

    def test_hook_fail(self):
        """Verify that a request fails if the hook fails."""
        self.configuration["storage"]["hook"] = "exit 1"
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status != 201

    def test_item_cache_rebuild(self):
        """Delete the item cache and verify that it is rebuild."""
        status, _, _ = self.request("MKCALENDAR", "/calendar.ics/")
        assert status == 201
        event = get_file_content("event1.ics")
        path = "/calendar.ics/event1.ics"
        status, _, _ = self.request("PUT", path, event)
        assert status == 201
        status, _, answer1 = self.request("GET", path)
        assert status == 200
        cache_folder = os.path.join(self.colpath, "collection-root",
                                    "calendar.ics", ".Radicale.cache", "item")
        assert os.path.exists(os.path.join(cache_folder, "event1.ics"))
        shutil.rmtree(cache_folder)
        status, _, answer2 = self.request("GET", path)
        assert status == 200
        assert answer1 == answer2
        assert os.path.exists(os.path.join(cache_folder, "event1.ics"))


class TestCustomStorageSystem(BaseFileSystemTest):
    """Test custom backend loading."""
    storage_type = "tests.custom.storage"

    def test_root(self):
        """A simple test to verify that the custom backend works."""
        BaseRequestsMixIn.test_root(self)