Added block burst_sink_qa for unit testing of burst-based blocks
diff --git a/grc/gsm_block_tree.xml b/grc/gsm_block_tree.xml
index e75197c..2503710 100644
--- a/grc/gsm_block_tree.xml
+++ b/grc/gsm_block_tree.xml
@@ -42,6 +42,7 @@
       <block>gsm_bursts_printer</block>
       <block>gsm_burst_sink</block>
       <block>gsm_burst_source</block>
+      <block>gsm_burst_sink_qa</block>
       <block>gsm_burst_source_qa</block>
       <block>gsm_extract_system_info</block>
       <block>gsm_extract_immediate_assignment</block>
diff --git a/grc/misc_utils/CMakeLists.txt b/grc/misc_utils/CMakeLists.txt
index 89c4650..5a3f874 100644
--- a/grc/misc_utils/CMakeLists.txt
+++ b/grc/misc_utils/CMakeLists.txt
@@ -28,5 +28,6 @@
     gsm_tmsi_dumper.xml
     gsm_burst_sink.xml
     gsm_burst_source.xml
-    gsm_burst_source_qa.xml DESTINATION share/gnuradio/grc/blocks
+    gsm_burst_source_qa.xml
+    gsm_burst_sink_qa.xml DESTINATION share/gnuradio/grc/blocks
 )
diff --git a/grc/misc_utils/gsm_burst_sink_qa.xml b/grc/misc_utils/gsm_burst_sink_qa.xml
new file mode 100644
index 0000000..c028da3
--- /dev/null
+++ b/grc/misc_utils/gsm_burst_sink_qa.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<block>
+  <name>QA Burst sink</name>
+  <key>gsm_burst_sink_qa</key>
+  <import>import grgsm</import>
+  <make>grgsm.burst_sink_qa()</make>
+
+  <sink>
+    <name>in</name>
+    <type>message</type>
+  </sink>
+</block>