require "test_helper"

class ChangesetTest < ActiveSupport::TestCase
  api_fixtures

  def test_changeset_count
    assert_equal 9, Changeset.count
  end

  def test_from_xml_no_text
    no_text = ""
    message_create = assert_raise(OSM::APIBadXMLError) do
      Changeset.from_xml(no_text, true)
    end
    assert_match /Must specify a string with one or more characters/, message_create.message
    message_update = assert_raise(OSM::APIBadXMLError) do
      Changeset.from_xml(no_text, false)
    end
    assert_match /Must specify a string with one or more characters/, message_update.message
  end

  def test_from_xml_no_changeset
    nocs = "<osm></osm>"
    message_create = assert_raise(OSM::APIBadXMLError) do
      Changeset.from_xml(nocs, true)
    end
    assert_match %r{XML doesn't contain an osm/changeset element}, message_create.message
    message_update = assert_raise(OSM::APIBadXMLError) do
      Changeset.from_xml(nocs, false)
    end
    assert_match %r{XML doesn't contain an osm/changeset element}, message_update.message
  end

  def test_from_xml_no_k_v
    nokv = "<osm><changeset><tag /></changeset></osm>"
    message_create = assert_raise(OSM::APIBadXMLError) do
      Changeset.from_xml(nokv, true)
    end
    assert_match /tag is missing key/, message_create.message
    message_update = assert_raise(OSM::APIBadXMLError) do
      Changeset.from_xml(nokv, false)
    end
    assert_match /tag is missing key/, message_update.message
  end

  def test_from_xml_no_v
    no_v = "<osm><changeset><tag k='key' /></changeset></osm>"
    message_create = assert_raise(OSM::APIBadXMLError) do
      Changeset.from_xml(no_v, true)
    end
    assert_match /tag is missing value/, message_create.message
    message_update = assert_raise(OSM::APIBadXMLError) do
      Changeset.from_xml(no_v, false)
    end
    assert_match /tag is missing value/, message_update.message
  end

  def test_from_xml_duplicate_k
    dupk = "<osm><changeset><tag k='dup' v='test' /><tag k='dup' v='value' /></changeset></osm>"
    message_create = assert_raise(OSM::APIDuplicateTagsError) do
      Changeset.from_xml(dupk, true)
    end
    assert_equal "Element changeset/ has duplicate tags with key dup", message_create.message
    message_update = assert_raise(OSM::APIDuplicateTagsError) do
      Changeset.from_xml(dupk, false)
    end
    assert_equal "Element changeset/ has duplicate tags with key dup", message_update.message
  end

  def test_from_xml_valid
    # Example taken from the Update section on the API_v0.6 docs on the wiki
    xml = "<osm><changeset><tag k=\"comment\" v=\"Just adding some streetnames and a restaurant\"/></changeset></osm>"
    assert_nothing_raised(OSM::APIBadXMLError) do
      Changeset.from_xml(xml, false)
    end
    assert_nothing_raised(OSM::APIBadXMLError) do
      Changeset.from_xml(xml, true)
    end
  end
end