From 14152dfdb8be40808e437b46f107907c6538ca81 Mon Sep 17 00:00:00 2001
From: Yang Song <songy23@users.noreply.github.com>
Date: Wed, 13 Dec 2017 09:30:35 -0800
Subject: Support previous encoding versions. (#901)

---
 .../implcore/tags/propagation/TagContextDeserializationTest.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'impl_core/src/test/java/io/opencensus/implcore/tags')

diff --git a/impl_core/src/test/java/io/opencensus/implcore/tags/propagation/TagContextDeserializationTest.java b/impl_core/src/test/java/io/opencensus/implcore/tags/propagation/TagContextDeserializationTest.java
index c465ee94..8db0e389 100644
--- a/impl_core/src/test/java/io/opencensus/implcore/tags/propagation/TagContextDeserializationTest.java
+++ b/impl_core/src/test/java/io/opencensus/implcore/tags/propagation/TagContextDeserializationTest.java
@@ -296,10 +296,17 @@ public class TagContextDeserializationTest {
   @Test
   public void testDeserializeWrongVersionId() throws TagContextDeserializationException {
     thrown.expect(TagContextDeserializationException.class);
-    thrown.expectMessage("Wrong Version ID: 1. Currently supported version is: 0");
+    thrown.expectMessage("Wrong Version ID: 1. Currently supports version up to: 0");
     serializer.fromByteArray(new byte[] {(byte) (SerializationUtils.VERSION_ID + 1)});
   }
 
+  @Test
+  public void testDeserializeNegativeVersionId() throws TagContextDeserializationException {
+    thrown.expect(TagContextDeserializationException.class);
+    thrown.expectMessage("Wrong Version ID: -1. Currently supports version up to: 0");
+    serializer.fromByteArray(new byte[] {(byte) -1});
+  }
+
   //     <tag_encoding> ==
   //       <tag_key_len><tag_key><tag_val_len><tag_val>
   //         <tag_key_len> == varint encoded integer
-- 
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