text: /*
   * libjingle
   * Copyright 2004 Google Inc.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   *  1. Redistributions of source code must retain the above copyright notice,
   *     this list of conditions and the following disclaimer.
   *  2. Redistributions in binary form must reproduce the above copyright notice,
   *     this list of conditions and the following disclaimer in the documentation
   *     and/or other materials provided with the distribution.
   *  3. The name of the author may not be used to endorse or promote products
   *     derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
   * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
   * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
   * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "talk/session/media/mediamessages.h"
  
  #include <string>
  #include <vector>
  
  #include "talk/base/gunit.h"
  #include "talk/base/scoped_ptr.h"
  #include "talk/p2p/base/constants.h"
  #include "talk/session/media/mediasessionclient.h"
  #include "talk/xmllite/xmlelement.h"
  
  // Unit tests for mediamessages.cc.
  
  namespace cricket {
  
  namespace {
  
  static const char kViewVideoNoneXml[] =
      "<view xmlns='google:jingle'"
      "  name='video1'"
      "  type='none'"
      "/>";
  
  class MediaMessagesTest : public testing::Test {
   public:
    // CreateMediaSessionDescription uses a static variable cricket::NS_JINGLE_RTP
    // defined in another file and cannot be used to initialize another static
    // variable (http://www.parashift.com/c++-faq-lite/ctors.html#faq-10.14)
    MediaMessagesTest()
        : remote_description_(CreateMediaSessionDescription("audio1", "video1")) {
    }
  
   protected:
    static std::string ViewVideoStaticVgaXml(const std::string& ssrc) {
        return "<view xmlns='google:jingle'"
               "  name='video1'"
               "  type='static'"
               "  ssrc='" + ssrc + "'"
               ">"
               "<params"
               "    width='640'"
               "    height='480'"
               "    framerate='30'"
               "    preference='0'"
               "  />"
               "</view>";
    }
  
    static cricket::StreamParams CreateStream(const std::string& nick,
                                              const std::string& name,
                                              uint32 ssrc1,
                                              uint32 ssrc2,
                                              const std::string& semantics,
                                              const std::string& type,
                                              const std::string& display) {
      StreamParams stream;
      stream.groupid = nick;
      stream.id = name;
      stream.ssrcs.push_back(ssrc1);
      stream.ssrcs.push_back(ssrc2);
      stream.ssrc_groups.push_back(
          cricket::SsrcGroup(semantics, stream.ssrcs));
      stream.type = type;
      stream.display = display;
      return stream;
    }
  
    static std::string StreamsXml(const std::string& stream1,
                                 const std::string& stream2) {
      return "<streams xmlns='google:jingle'>"
             + stream1
             + stream2 +
             "</streams>";
    }
  
  
    static std::string StreamXml(const std::string& nick,
                                 const std::string& name,
                                 const std::string& ssrc1,
                                 const std::string& ssrc2,
                                 const std::string& semantics,
                                 const std::string& type,
                                 const std::string& display) {
      return "<stream"
             " nick='" + nick + "'"
             " name='" + name + "'"
             " type='" + type + "'"
             " display='" + display + "'"
             ">"
             "<ssrc>" + ssrc1 + "</ssrc>"
             "<ssrc>" + ssrc2 + "</ssrc>"
             "<ssrc-group"
             "  semantics='" + semantics + "'"
             ">"
             "<ssrc>" + ssrc1 + "</ssrc>"
             "<ssrc>" + ssrc2 + "</ssrc>"
             "</ssrc-group>"
             "</stream>";
    }
  
    static cricket::SessionDescription* CreateMediaSessionDescription(
        const std::string& audio_content_name,
        const std::string& video_content_name) {
      cricket::SessionDescription* desc = new cricket::SessionDescription();
      desc->AddContent(audio_content_name, cricket::NS_JINGLE_RTP,
                       new cricket::AudioContentDescription());
      desc->AddContent(video_content_name, cricket::NS_JINGLE_RTP,
                       new cricket::VideoContentDescription());
      return desc;
    }
  
    talk_base::scoped_ptr<cricket::SessionDescription> remote_description_;
  };
  
  }  // anonymous namespace
  
  // Test serializing/deserializing an empty <view> message.
  TEST_F(MediaMessagesTest, ViewNoneToFromXml) {
    buzz::XmlElement* expected_view_elem =
        buzz::XmlElement::ForStr(kViewVideoNoneXml);
    talk_base::scoped_ptr<buzz::XmlElement> action_elem(
        new buzz::XmlElement(QN_JINGLE));
  
    EXPECT_FALSE(cricket::IsJingleViewRequest(action_elem.get()));
    action_elem->AddElement(expected_view_elem);
    EXPECT_TRUE(cricket::IsJingleViewRequest(action_elem.get()));
  
    cricket::ViewRequest view_request;
    cricket::XmlElements actual_view_elems;
    cricket::WriteError error;
  
    ASSERT_TRUE(cricket::WriteJingleViewRequest(
        "video1", view_request, &actual_view_elems, &error));
  
    ASSERT_EQ(1U, actual_view_elems.size());
    EXPECT_EQ(expected_view_elem->Str(), actual_view_elems[0]->Str());
  
    cricket::ParseError parse_error;
    EXPECT_TRUE(cricket::IsJingleViewRequest(action_elem.get()));
    ASSERT_TRUE(cricket::ParseJingleViewRequest(
        action_elem.get(), &view_request, &parse_error));
    EXPECT_EQ(0U, view_request.static_video_views.size());
  }
  
  // Test serializing/deserializing an a simple vga <view> message.
  TEST_F(MediaMessagesTest, ViewVgaToFromXml) {
    talk_base::scoped_ptr<buzz::XmlElement> action_elem(
        new buzz::XmlElement(QN_JINGLE));
    buzz::XmlElement* expected_view_elem1 =
        buzz::XmlElement::ForStr(ViewVideoStaticVgaXml("1234"));
    buzz::XmlElement* expected_view_elem2 =
        buzz::XmlElement::ForStr(ViewVideoStaticVgaXml("2468"));
    action_elem->AddElement(expected_view_elem1);
    action_elem->AddElement(expected_view_elem2);
  
    cricket::ViewRequest view_request;
    cricket::XmlElements actual_view_elems;
    cricket::WriteError error;
  
    view_request.static_video_views.push_back(cricket::StaticVideoView(
        cricket::StreamSelector(1234), 640, 480, 30));
    view_request.static_video_views.push_back(cricket::StaticVideoView(
        cricket::StreamSelector(2468), 640, 480, 30));
  
    ASSERT_TRUE(cricket::WriteJingleViewRequest(
        "video1", view_request, &actual_view_elems, &error));
  
    ASSERT_EQ(2U, actual_view_elems.size());
    EXPECT_EQ(expected_view_elem1->Str(), actual_view_elems[0]->Str());
    EXPECT_EQ(expected_view_elem2->Str(), actual_view_elems[1]->Str());
  
    view_request.static_video_views.clear();
    cricket::ParseError parse_error;
    EXPECT_TRUE(cricket::IsJingleViewRequest(action_elem.get()));
    ASSERT_TRUE(cricket::ParseJingleViewRequest(
        action_elem.get(), &view_request, &parse_error));
    EXPECT_EQ(2U, view_request.static_video_views.size());
    EXPECT_EQ(1234U, view_request.static_video_views[0].selector.ssrc);
    EXPECT_EQ(640, view_request.static_video_views[0].width);
    EXPECT_EQ(480, view_request.static_video_views[0].height);
    EXPECT_EQ(30, view_request.static_video_views[0].framerate);
    EXPECT_EQ(2468U, view_request.static_video_views[1].selector.ssrc);
  }
  
  // Test deserializing bad view XML.
  TEST_F(MediaMessagesTest, ParseBadViewXml) {
    talk_base::scoped_ptr<buzz::XmlElement> action_elem(
        new buzz::XmlElement(QN_JINGLE));
    buzz::XmlElement* view_elem =
        buzz::XmlElement::ForStr(ViewVideoStaticVgaXml("not-an-ssrc"));
    action_elem->AddElement(view_elem);
  
    cricket::ViewRequest view_request;
    cricket::ParseError parse_error;
    ASSERT_FALSE(cricket::ParseJingleViewRequest(
        action_elem.get(), &view_request, &parse_error));
  }
  
  
  // Test serializing/deserializing typical streams xml.
  TEST_F(MediaMessagesTest, StreamsToFromXml) {
    talk_base::scoped_ptr<buzz::XmlElement> expected_streams_elem(
        buzz::XmlElement::ForStr(
            StreamsXml(
                StreamXml("nick1", "stream1", "101", "102",
                          "semantics1", "type1", "display1"),
                StreamXml("nick2", "stream2", "201", "202",
                          "semantics2", "type2", "display2"))));
  
    std::vector<cricket::StreamParams> expected_streams;
    expected_streams.push_back(CreateStream("nick1", "stream1", 101U, 102U,
                                            "semantics1", "type1", "display1"));
    expected_streams.push_back(CreateStream("nick2", "stream2", 201U, 202U,
                                            "semantics2", "type2", "display2"));
  
    talk_base::scoped_ptr<buzz::XmlElement> actual_desc_elem(
        new buzz::XmlElement(QN_JINGLE_RTP_CONTENT));
    cricket::WriteJingleStreams(expected_streams, actual_desc_elem.get());
  
    const buzz::XmlElement* actual_streams_elem =
        actual_desc_elem->FirstNamed(QN_JINGLE_DRAFT_STREAMS);
    ASSERT_TRUE(actual_streams_elem != NULL);
    EXPECT_EQ(expected_streams_elem->Str(), actual_streams_elem->Str());
  
    talk_base::scoped_ptr<buzz::XmlElement> expected_desc_elem(
        new buzz::XmlElement(QN_JINGLE_RTP_CONTENT));
    expected_desc_elem->AddElement(new buzz::XmlElement(
        *expected_streams_elem));
    std::vector<cricket::StreamParams> actual_streams;
    cricket::ParseError parse_error;
  
    EXPECT_TRUE(cricket::HasJingleStreams(expected_desc_elem.get()));
    ASSERT_TRUE(cricket::ParseJingleStreams(
        expected_desc_elem.get(), &actual_streams, &parse_error));
    EXPECT_EQ(2U, actual_streams.size());
    EXPECT_EQ(expected_streams[0], actual_streams[0]);
    EXPECT_EQ(expected_streams[1], actual_streams[1]);
  }
  
  // Test deserializing bad streams xml.
  TEST_F(MediaMessagesTest, StreamsFromBadXml) {
    talk_base::scoped_ptr<buzz::XmlElement> streams_elem(
        buzz::XmlElement::ForStr(
            StreamsXml(
                StreamXml("nick1", "name1", "101", "not-an-ssrc",
                          "semantics1", "type1", "display1"),
                StreamXml("nick2", "name2", "202", "not-an-ssrc",
                          "semantics2", "type2", "display2"))));
    talk_base::scoped_ptr<buzz::XmlElement> desc_elem(
        new buzz::XmlElement(QN_JINGLE_RTP_CONTENT));
    desc_elem->AddElement(new buzz::XmlElement(*streams_elem));
  
    std::vector<cricket::StreamParams> actual_streams;
    cricket::ParseError parse_error;
    ASSERT_FALSE(cricket::ParseJingleStreams(
        desc_elem.get(), &actual_streams, &parse_error));
  }
  
  }  // namespace cricket
  