From 3122949384d1d42856e4f648444f6713def4bd36 Mon Sep 17 00:00:00 2001
From: Takeru Ohta <phjgt308@gmail.com>
Date: Thu, 11 Oct 2018 00:35:24 +0900
Subject: [PATCH] Fix the unexpected panic reported by #2

---
 src/media_playlist.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/media_playlist.rs b/src/media_playlist.rs
index 65ba84e..0d876ed 100644
--- a/src/media_playlist.rs
+++ b/src/media_playlist.rs
@@ -175,7 +175,7 @@ impl MediaPlaylistBuilder {
             .chain(self.end_list_tag.iter().map(|t| t.requires_version()))
             .chain(self.segments.iter().map(|s| s.requires_version()))
             .max()
-            .expect("Never fails")
+            .unwrap_or(ProtocolVersion::V1)
     }
 }
 impl Default for MediaPlaylistBuilder {
@@ -490,4 +490,10 @@ mod tests {
                 .is_ok()
         );
     }
+
+    #[test]
+    fn empty_m3u8_parse_test() {
+        let m3u8 = "";
+        assert!(m3u8.parse::<MediaPlaylist>().is_err());
+    }
 }