From 43a28065b183af1d6015cf0bc890eb1960474b58 Mon Sep 17 00:00:00 2001 From: Shaun McDonald Date: Sun, 6 Dec 2009 02:13:30 +0000 Subject: [PATCH] Change the way that the changeset parsing is done, so that it is in line with the nodes/ways/relations and gives much nicer error messages. Adding some tests too to back up those changes. --- app/controllers/changeset_controller.rb | 11 ++-- app/models/changeset.rb | 49 +++++++++++------ test/unit/changeset_test.rb | 73 +++++++++++++++++++++++++ test/unit/node_test.rb | 12 ++++ 4 files changed, 122 insertions(+), 23 deletions(-) diff --git a/app/controllers/changeset_controller.rb b/app/controllers/changeset_controller.rb index 2834fdae9..80b9fdb94 100644 --- a/app/controllers/changeset_controller.rb +++ b/app/controllers/changeset_controller.rb @@ -28,13 +28,10 @@ class ChangesetController < ApplicationController cs = Changeset.from_xml(request.raw_post, true) - if cs - cs.user_id = @user.id - cs.save_with_tags! - render :text => cs.id.to_s, :content_type => "text/plain" - else - raise OSM::APIBadXMLError.new(Changeset, request.raw_post); - end + # Assume that Node.from_xml has thrown an exception if there is an error parsing the xml + cs.user_id = @user.id + cs.save_with_tags! + render :text => cs.id.to_s, :content_type => "text/plain" end ## diff --git a/app/models/changeset.rb b/app/models/changeset.rb index 4efd4f9e7..8e51cead2 100644 --- a/app/models/changeset.rb +++ b/app/models/changeset.rb @@ -56,26 +56,38 @@ class Changeset < ActiveRecord::Base p = XML::Parser.string(xml) doc = p.parse - cs = Changeset.new - doc.find('//osm/changeset').each do |pt| - if create - cs.created_at = Time.now.getutc - # initial close time is 1h ahead, but will be increased on each - # modification. - cs.closed_at = cs.created_at + IDLE_TIMEOUT - # initially we have no changes in a changeset - cs.num_changes = 0 - end - - pt.find('tag').each do |tag| - cs.add_tag_keyval(tag['k'], tag['v']) - end + return Changeset.from_xml_node(pt, create) end - rescue Exception => ex - cs = nil + raise OSM::APIBadXMLError.new("changeset", xml, "XML doesn't contain an osm/changeset element.") + rescue LibXML::XML::Error, ArgumentError => ex + raise OSM::APIBadXMLError.new("changeset", xml, ex.message) + end + end + + def self.from_xml_node(pt, create=false) + cs = Changeset.new + if create + cs.created_at = Time.now.getutc + # initial close time is 1h ahead, but will be increased on each + # modification. + cs.closed_at = cs.created_at + IDLE_TIMEOUT + # initially we have no changes in a changeset + cs.num_changes = 0 + else + raise OSM::APIBadXMLError.new("changeset", pt, "ID is required when updating.") if pt['id'].nil? + cs.id = pt['id'].to_i + # .to_i will return 0 if there is no number that can be parsed. + # We want to make sure that there is no id with zero anyway. + raise OSM::APIBadUserInput.new("ID of changeset cannot be zero when updating.") if cs.id == 0 end + pt.find('tag').each do |tag| + raise OSM::APIBadXMLError.new("changeset", pt, "tag is missing key") if tag['k'].nil? + raise OSM::APIBadXMLError.new("changeset", pt, "tag is missing value") if tag['v'].nil? + cs.add_tag_keyval(tag['k'], tag['v']) + end + return cs end @@ -150,6 +162,11 @@ class Changeset < ActiveRecord::Base def add_tag_keyval(k, v) @tags = Hash.new unless @tags + + # duplicate tags are now forbidden, so we can't allow values + # in the hash to be overwritten. + raise OSM::APIDuplicateTagsError.new("changeset", self.id, k) if @tags.include? k + @tags[k] = v end diff --git a/test/unit/changeset_test.rb b/test/unit/changeset_test.rb index bd53efc49..0f88fad7b 100644 --- a/test/unit/changeset_test.rb +++ b/test/unit/changeset_test.rb @@ -7,4 +7,77 @@ class ChangesetTest < ActiveSupport::TestCase assert_equal 7, Changeset.count end + def test_xml_from_id_zero + id_list = ["", "0", "00", "0.0", "a"] + id_list.each do |id| + zero_id = "" + assert_nothing_raised(OSM::APIBadUserInput) { + Changeset.from_xml(zero_id, true) + } + message_update = assert_raise(OSM::APIBadUserInput) { + Changeset.from_xml(zero_id, false) + } + assert_match /ID of changeset cannot be zero when updating/, message_update.message + end + end + + def test_from_xml_no_text + no_text = "" + message_create = assert_raise(OSM::APIBadXMLError) { + Changeset.from_xml(no_text, true) + } + assert_match /Must specify a string with one or more characters/, message_create.message + message_update = assert_raise(OSM::APIBadXMLError) { + Changeset.from_xml(no_text, false) + } + assert_match /Must specify a string with one or more characters/, message_update.message + end + + def test_from_xml_no_changeset + nocs = "" + message_create = assert_raise(OSM::APIBadXMLError) { + Changeset.from_xml(nocs, true) + } + assert_match /XML doesn't contain an osm\/changeset element/, message_create.message + message_update = assert_raise(OSM::APIBadXMLError) { + Changeset.from_xml(nocs, false) + } + assert_match /XML doesn't contain an osm\/changeset element/, message_update.message + end + + def test_from_xml_no_k_v + nokv = "" + message_create = assert_raise(OSM::APIBadXMLError) { + Changeset.from_xml(nokv, true) + } + assert_match /tag is missing key/, message_create.message + message_update = assert_raise(OSM::APIBadXMLError) { + Changeset.from_xml(nokv, false) + } + assert_match /tag is missing key/, message_create.message + end + + def test_from_xml_no_v + no_v = "" + message_create = assert_raise(OSM::APIBadXMLError) { + Changeset.from_xml(no_v, true) + } + assert_match /tag is missing value/, message_create.message + message_update = assert_raise(OSM::APIBadXMLError) { + Changeset.from_xml(no_v, false) + } + assert_match /tag is missing value/, message_update.message + end + + def test_from_xml_duplicate_k + dupk = "" + message_create = assert_raise(OSM::APIDuplicateTagsError) { + Changeset.from_xml(dupk, true) + } + assert_equal "Element changeset/ has duplicate tags with key dup", message_create.message + message_update = assert_raise(OSM::APIDuplicateTagsError) { + Changeset.from_xml(dupk, false) + } + assert_equal "Element changeset/1 has duplicate tags with key dup", message_update.message + end end diff --git a/test/unit/node_test.rb b/test/unit/node_test.rb index dd907f0f4..24300e428 100644 --- a/test/unit/node_test.rb +++ b/test/unit/node_test.rb @@ -270,6 +270,18 @@ class NodeTest < ActiveSupport::TestCase assert_match /Must specify a string with one or more characters/, message_update.message end + def test_from_xml_no_node + no_node = "" + message_create = assert_raise(OSM::APIBadXMLError) { + Node.from_xml(no_node, true) + } + assert_match /XML doesn't contain an osm\/node element/, message_create.message + message_update = assert_raise(OSM::APIBadXMLError) { + Node.from_xml(no_node, false) + } + assert_match /XML doesn't contain an osm\/node element/, message_update.message + end + def test_from_xml_no_k_v nokv = "" message_create = assert_raise(OSM::APIBadXMLError) { -- 2.39.5