From 13d9cd4914e89ce6fe3f5c8acf106ac70dee9bf1 Mon Sep 17 00:00:00 2001
From: Jamie Hardt <jamie@squad51.us>
Date: Thu, 17 Sep 2026 09:57:52 -0700
Subject: [PATCH] Added tests to audioStreamFormat parsing

ASF's may have zero or one channelformatrefs or packformatrefs. We were
expecting one.
---
 src/wavinfo/wave_adm_reader.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/wavinfo/wave_adm_reader.py b/src/wavinfo/wave_adm_reader.py
index 665aa73..c0ff3a7 100644
--- a/src/wavinfo/wave_adm_reader.py
+++ b/src/wavinfo/wave_adm_reader.py
@@ -134,13 +134,17 @@ class WavADMReader:
             ("audioStreamFormat[@audioStreamFormatID='%s']"
              "/audioChannelFormatIDRef") % stream_id,
             namespaces=nsmap)
-        channelformat_id = channelformatref_elem.text
+
+        if channelformatref_elem:
+            channelformat_id = channelformatref_elem.text
 
         packformatref_elem = afext.find(
             ("audioStreamFormat[@audioStreamFormatID='%s']"
              "/audioPackFormatIDRef") % stream_id,
             namespaces=nsmap)
-        packformat_id = packformatref_elem.text
+
+        if packformatref_elem:
+            packformat_id = packformatref_elem.text
 
         channelformat_elem = afext\
             .find("audioChannelFormat[@audioChannelFormatID='%s']"