detect invaild JSON encoding in bytes field

src/google/protobuf/util/json_util_test.cc

@@ -133,29 +133,29 @@ TEST_F(JsonUtilTest, TestDefaultValues) {
   m.set_string_value("i am a test string value");
   m.set_bytes_value("i am a test bytes value");
   EXPECT_EQ(
-	  "{\"boolValue\":false,"
-	  "\"int32Value\":0,"
-	  "\"int64Value\":\"0\","
-	  "\"uint32Value\":0,"
-	  "\"uint64Value\":\"0\","
-	  "\"floatValue\":0,"
-	  "\"doubleValue\":0,"
-	  "\"stringValue\":\"i am a test string value\","
-	  "\"bytesValue\":\"aSBhbSBhIHRlc3QgYnl0ZXMgdmFsdWU=\","
-	  "\"enumValue\":\"FOO\","
-	  "\"repeatedBoolValue\":[],"
-	  "\"repeatedInt32Value\":[],"
-	  "\"repeatedInt64Value\":[],"
-	  "\"repeatedUint32Value\":[],"
-	  "\"repeatedUint64Value\":[],"
-	  "\"repeatedFloatValue\":[],"
-	  "\"repeatedDoubleValue\":[],"
-	  "\"repeatedStringValue\":[],"
-	  "\"repeatedBytesValue\":[],"
-	  "\"repeatedEnumValue\":[],"
-	  "\"repeatedMessageValue\":[]"
-	  "}",
-	  ToJson(m, options));
+      "{\"boolValue\":false,"
+      "\"int32Value\":0,"
+      "\"int64Value\":\"0\","
+      "\"uint32Value\":0,"
+      "\"uint64Value\":\"0\","
+      "\"floatValue\":0,"
+      "\"doubleValue\":0,"
+      "\"stringValue\":\"i am a test string value\","
+      "\"bytesValue\":\"aSBhbSBhIHRlc3QgYnl0ZXMgdmFsdWU=\","
+      "\"enumValue\":\"FOO\","
+      "\"repeatedBoolValue\":[],"
+      "\"repeatedInt32Value\":[],"
+      "\"repeatedInt64Value\":[],"
+      "\"repeatedUint32Value\":[],"
+      "\"repeatedUint64Value\":[],"
+      "\"repeatedFloatValue\":[],"
+      "\"repeatedDoubleValue\":[],"
+      "\"repeatedStringValue\":[],"
+      "\"repeatedBytesValue\":[],"
+      "\"repeatedEnumValue\":[],"
+      "\"repeatedMessageValue\":[]"
+      "}",
+      ToJson(m, options));
 }
 
 TEST_F(JsonUtilTest, ParseMessage) {