[Test] Add tests for live_delay, live_offset and live stream total time

- LiveDelayFromManifestConfig: manifest_config live_delay key sets m_liveDelay
- LiveOffsetFromManifestConfig: manifest_config live_offset key sets m_liveOffset
- LiveStreamTotalTimeIsSet: m_totalTime is populated from mediaPresentationDuration

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
(cherry picked from commit df87aa0)

Author: oliv3r

src/test/TestDASHTree.cpp

@@ -700,6 +700,27 @@ TEST_F(DASHTreeTest, SuggestedPresentationDelay)
   EXPECT_EQ(tree->m_liveDelay, 32);
 }
 
+TEST_F(DASHTreeTest, LiveDelayFromManifestConfig)
+{
+  m_kodiProps["inputstream.adaptive.manifest_config"] = R"({"live_delay": 60})";
+  OpenTestFile("mpd/segtpl_spd.mpd", "https://foo.bar/segtpl_spd.mpd");
+  EXPECT_EQ(tree->m_liveDelay, 60u);
+}
+
+TEST_F(DASHTreeTest, LiveOffsetFromManifestConfig)
+{
+  m_kodiProps["inputstream.adaptive.manifest_config"] = R"({"live_offset": 30})";
+  OpenTestFile("mpd/segtimeline_live_pd.mpd");
+  EXPECT_EQ(tree->m_liveOffset, 30u);
+}
+
+TEST_F(DASHTreeTest, LiveStreamTotalTimeIsSet)
+{
+  // m_totalTime drives GetChapterPos for the virtual live chapter (jump-to-live)
+  OpenTestFile("mpd/segtimeline_live_pd.mpd");
+  EXPECT_EQ(tree->m_totalTime, 9000000u); // mediaPresentationDuration="PT9000S" -> 9000000ms
+}
+
 TEST_F(DASHTreeTest, SegmentTemplateStartNumber)
 {
   OpenTestFile("mpd/segmenttemplate_startnumber.mpd", "https://vod.service.net/SGP1/highlightpost/1234567890/1/web/dash/segtpl_sn.mpd");