--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/unit/test_plugin_xep_0293.py	Mon May 29 17:58:05 2023 +0200
@@ -0,0 +1,241 @@
+#!/usr/bin/env python3
+
+# Libervia: an XMPP client
+# Copyright (C) 2009-2023 Jérôme Poisson (goffi@goffi.org)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program 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 Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from twisted.words.xish import domish
+
+from sat.plugins.plugin_xep_0167.constants import NS_JINGLE_RTP
+from sat.plugins.plugin_xep_0293 import NS_JINGLE_RTP_RTCP_FB, RTCP_FB_KEY, XEP_0293
+from sat.tools import xml_tools
+
+class TestXEP0293:
+
+    def test_parse_sdp_rtcp_fb_general(self, host):
+        """Parsing of a general RTCP feedback SDP line."""
+        xep_0293 = XEP_0293(host)
+
+        application_data = {}
+        transport_data = {}
+
+        # SDP line: a=rtcp-fb:* nack pli
+        attribute = "rtcp-fb"
+        parts = ["*", "nack", "pli"]
+        xep_0293._parse_sdp_a_trigger(
+            attribute=attribute,
+            parts=parts,
+            call_data={},
+            metadata={},
+            media_type="video",
+            application_data=application_data,
+            transport_data=transport_data,
+        )
+        assert application_data[RTCP_FB_KEY][0] == ("nack", "pli", {})
+
+    def test_parse_sdp_rtcp_fb_specific(self, host):
+        """Parsing of a payload-specific RTCP feedback SDP line."""
+        xep_0293 = XEP_0293(host)
+
+        application_data = {
+            "payload_types": {96: {}}
+        }
+        transport_data = {}
+
+        # SDP line: a=rtcp-fb:96 nack
+        attribute = "rtcp-fb"
+        parts = ["96", "nack"]
+        xep_0293._parse_sdp_a_trigger(
+            attribute=attribute,
+            parts=parts,
+            call_data={},
+            metadata={},
+            media_type="video",
+            application_data=application_data,
+            transport_data=transport_data,
+        )
+        assert application_data["payload_types"][96][RTCP_FB_KEY][0] == ("nack", None, {})
+
+    def test_parse_sdp_rtcp_fb_trr_int_general(self, host):
+        """Parsing of a general RTCP feedback with trr-int SDP line."""
+        xep_0293 = XEP_0293(host)
+
+        application_data = {}
+        transport_data = {}
+
+        # SDP line: a=rtcp-fb-trr-int:* 100
+        attribute = "rtcp-fb-trr-int"
+        parts = ["*", "100"]
+        xep_0293._parse_sdp_a_trigger(
+            attribute=attribute,
+            parts=parts,
+            call_data={},
+            metadata={},
+            media_type="video",
+            application_data=application_data,
+            transport_data=transport_data,
+        )
+        assert application_data["rtcp-fb-trr-int"] == 100
+
+    def test_parse_sdp_rtcp_fb_trr_int_specific(self, host):
+        """Parsing of a payload-specific RTCP feedback with trr-int SDP line."""
+        xep_0293 = XEP_0293(host)
+
+        application_data = {
+            "payload_types": {96: {}}
+        }
+        transport_data = {}
+
+        # SDP line: a=rtcp-fb-trr-int:96 100
+        attribute = "rtcp-fb-trr-int"
+        parts = ["96", "100"]
+        xep_0293._parse_sdp_a_trigger(
+            attribute=attribute,
+            parts=parts,
+            call_data={},
+            metadata={},
+            media_type="video",
+            application_data=application_data,
+            transport_data=transport_data,
+        )
+        assert application_data["payload_types"][96]["rtcp-fb-trr-int"] == 100
+
+    def test_generate_sdp_session(self, host):
+        """Generation of SDP lines for session data."""
+        xep_0293 = XEP_0293(host)
+        sdp_lines = []
+        application_data = {RTCP_FB_KEY: [("nack", "pli", {})], "rtcp-fb-trr-int": 100}
+
+        xep_0293._generate_sdp_content_trigger(
+            session={},
+            local=True,
+            content_name="test",
+            content_data={},
+            sdp_lines=sdp_lines,
+            application_data=application_data,
+            app_data_key="test",
+            media_data={},
+            media="video",
+        )
+
+        assert sdp_lines[0] == "a=rtcp-fb:* nack pli"
+        assert sdp_lines[1] == "a=rtcp-fb:* trr-int 100"
+
+    def test_generate_sdp_payload_type(self, host):
+        """Generation of SDP lines for each payload type."""
+        xep_0293 = XEP_0293(host)
+        sdp_lines = []
+        application_data = {}
+        media_data = {
+            "payload_types": {96: {RTCP_FB_KEY: [("nack", None, {})], "rtcp-fb-trr-int": 100}}
+        }
+
+        xep_0293._generate_sdp_content_trigger(
+            session={},
+            local=True,
+            content_name="test",
+            content_data={},
+            sdp_lines=sdp_lines,
+            application_data=application_data,
+            app_data_key="test",
+            media_data=media_data,
+            media="video",
+        )
+
+        assert sdp_lines[0] == "a=rtcp-fb:96 nack"
+        assert sdp_lines[1] == "a=rtcp-fb:96 trr-int 100"
+
+    def test_parse_description(self, host):
+        """Parsing of <rtcp-fb> and <rtcp-fb-trr-int> elements from a description."""
+        xep_0293 = XEP_0293(host)
+
+        desc_element = xml_tools.parse(
+            f"""
+            <description xmlns="urn:xmpp:jingle:apps:rtp:1" media="audio">
+                <rtcp-fb xmlns="{NS_JINGLE_RTP_RTCP_FB}" type="nack" subtype="pli"/>
+                <rtcp-fb-trr-int xmlns="{NS_JINGLE_RTP_RTCP_FB}" value="100"/>
+            </description>
+            """
+        )
+
+        media_data = {}
+        xep_0293._parse_description_trigger(desc_element, media_data)
+
+        assert media_data[RTCP_FB_KEY][0] == ("nack", "pli", {})
+        assert media_data["rtcp_fb_trr_int"][0] == 100
+
+    def test_parse_description_payload_type(self, host):
+        """Parsing of <rtcp-fb> and <rtcp-fb-trr-int> elements from a payload type."""
+        xep_0293 = XEP_0293(host)
+
+        desc_element = xml_tools.parse(
+            f"""
+            <description xmlns="urn:xmpp:jingle:apps:rtp:1" media="audio">
+                <payload-type id="96">
+                    <rtcp-fb xmlns="{NS_JINGLE_RTP_RTCP_FB}" type="nack" subtype="pli"/>
+                    <rtcp-fb-trr-int xmlns="{NS_JINGLE_RTP_RTCP_FB}" value="100"/>
+                </payload-type>
+            </description>
+            """
+        )
+
+        media_data = {}
+        payload_type_elt = desc_element.firstChildElement()
+        payload_type_data = {}
+        xep_0293._parse_description_payload_type_trigger(
+            desc_element, media_data, payload_type_elt, payload_type_data
+        )
+
+        assert payload_type_data[RTCP_FB_KEY][0] == ("nack", "pli", {})
+        assert payload_type_data["rtcp_fb_trr_int"][0] == 100
+
+    def test_build_rtcp_fb_elements(self, host):
+        """Building the <rtcp-fb> and <rtcp-fb-trr-int> elements."""
+        xep_0293 = XEP_0293(host)
+        data = {
+            RTCP_FB_KEY: [("nack", "pli", {})],
+            "rtcp-fb-trr-int": 100
+        }
+
+        # Test _build_description_trigger
+        desc_elt = domish.Element((NS_JINGLE_RTP, "description"))
+        xep_0293._build_description_trigger(desc_elt, data, {})
+
+        rtcp_fb_elts = list(desc_elt.elements(NS_JINGLE_RTP_RTCP_FB, "rtcp-fb"))
+        assert len(rtcp_fb_elts) == 1
+        rtcp_fb_elt = rtcp_fb_elts[0]
+        assert rtcp_fb_elt["type"] == "nack"
+        assert rtcp_fb_elt["subtype"] == "pli"
+
+        rtcp_fb_trr_int_elts = list(desc_elt.elements(NS_JINGLE_RTP_RTCP_FB, "rtcp-fb-trr-int"))
+        assert len(rtcp_fb_trr_int_elts) == 1
+        rtcp_fb_trr_int_elt = rtcp_fb_trr_int_elts[0]
+        assert int(rtcp_fb_trr_int_elt["value"]) == 100
+
+        # Test _build_description_payload_type_trigger
+        desc_elt = domish.Element((NS_JINGLE_RTP, "description"))
+        payload_type_elt = desc_elt.addElement((NS_JINGLE_RTP, "payload-type"))
+        xep_0293._build_description_payload_type_trigger(desc_elt, {}, data, payload_type_elt)
+
+        rtcp_fb_elts = list(payload_type_elt.elements(NS_JINGLE_RTP_RTCP_FB, "rtcp-fb"))
+        assert len(rtcp_fb_elts) == 1
+        rtcp_fb_elt = rtcp_fb_elts[0]
+        assert rtcp_fb_elt["type"] == "nack"
+        assert rtcp_fb_elt["subtype"] == "pli"
+
+        rtcp_fb_trr_int_elts = list(payload_type_elt.elements(NS_JINGLE_RTP_RTCP_FB, "rtcp-fb-trr-int"))
+        assert len(rtcp_fb_trr_int_elts) == 1
+        rtcp_fb_trr_int_elt = rtcp_fb_trr_int_elts[0]
+        assert int(rtcp_fb_trr_int_elt["value"]) == 100