Add support for making an idempotent POST. This allows retrying a POST that was interrupted. It involves creating a post once only (poe) url /rest/data/<class>/@poe/<random_token>. This url acts the same as a post to /rest/data/<class>. However once the @poe url is used, it can't be used for a second POST. To make these changes: 1) Take the body of post_collection into a new post_collection_inner function. Have post_collection call post_collection_inner. 2) Add a handler for POST to rest/data/class/@poe. This will return a unique POE url. By default the url expires after 30 minutes. The POE random token is only good for a specific user and is stored in the session db. 3) Add a handler for POST to rest/data/<class>/@poe/<random token>. The random token generated in 2 is validated for proper class (if token is not generic) and proper user and must not have expired. If everything is valid, call post_collection_inner to process the input and generate the new entry. To make recognition of 2 stable (so it's not confused with rest/data/<:class_name>/<:item_id>), removed @ from Routing::url_to_regex. The current Routing.execute method stops on the first regular expression to match the URL. Since item_id doesn't accept a POST, I was getting 405 bad method sometimes. My guess is the order of the regular expressions is not stable, so sometime I would get the right regexp for /data/<class>/@poe and sometime I would get the one for /data/<class>/<item_id>. By removing the @ from the url_to_regexp, there was no way for the item_id case to match @poe. There are alternate fixes we may need to look at. If a regexp matches but the method does not, return to the regexp matching loop in execute() looking for another match. Only once every possible match has failed should the code return a 405 method failure. Another fix is to implement a more sophisticated mechanism so that @Routing.route("/data/<:class_name>/<:item_id>/<:attr_name>", 'PATCH') has different regexps for matching <:class_name> <:item_id> and <:attr_name>. Currently the regexp specified by url_to_regex is used for every component. Other fixes: Made failure to find any props in props_from_args return an empty dict rather than throwing an unhandled error. Make __init__ for SimulateFieldStorageFromJson handle an empty json doc. Useful for POSTing to rest/data/class/@poe with an empty document. Testing: added testPostPOE to test/rest_common.py that I think covers all the code that was added. Documentation: Add doc to rest.txt in the "Client API" section titled: Safely Re-sending POST". Move existing section "Adding new rest endpoints" in "Client API" to a new second level section called "Programming the REST API". Also a minor change to the simple rest client moving the header setting to continuation lines rather than showing one long line.

#-*- encoding: utf-8 -*-
""" Testing the jinja2 templating engine of roundup-tracker.

Copyright: 2016 Intevation GmbH.
Author: Bernhard E. Reiter <bernhard@intevation.de>

This module is Free Software under the Roundup licensing of 1.5,
see the COPYING.txt file coming with Roundup.

Just a test file template for now.
"""
import shutil # only, needed for tearDown. TODO: Remove when refactored.
import unittest

from . import db_test_base

TESTSUITE_IDENTIFIER='jinja2'

class TestCase_Zero(unittest.TestCase):
    def test_zero(self):
        self.assertEqual(True, True)


class Jinja2Test(object):
    """Sets up and tears down an instance with database contents.

    Setup and teardown modelled after the use of db_test_base
    by several modules like test_xmlrpc and test_userauditor.

    TODO: Should probably be moved to a base case in db_test_base.py.
    """

    backend = None  # can be used to create tests per backend, see test_xmlrpc

    def setUp(self):
        self.dirname = '_test_' + TESTSUITE_IDENTIFIER
        self.instance = db_test_base.setupTracker(self.dirname, self.backend)
        self.db = self.instance.open('admin')

    def tearDown(self):
        self.db.close()
        try:
            shutil.rmtree(self.dirname)
        except OSError as error:
            if error.errno not in (errno.ENOENT, errno.ESRCH): raise

    def test_zero(self):
        """Do nothing just make sure that setup and teardown works."""
        pass


# only using one database backend for now, not sure if doing all
# backends will keep the test focussed enough to be useful for the used
# computing time. Would be okay to change in the future.
class anydbmJinja2Test(Jinja2Test, unittest.TestCase):
    backend = 'anydbm'

# vim: ts=4 et sts=4 sw=4 ai :