encoding: provide FormattedOutputFunction for Block

refs #2225

Change-Id: Ie38539ff93293b3919789043b01e09b573fb619a
diff --git a/tests/unit-tests/data.t.cpp b/tests/unit-tests/data.t.cpp
index ccf4e5b..b7d49c3 100644
--- a/tests/unit-tests/data.t.cpp
+++ b/tests/unit-tests/data.t.cpp
@@ -273,9 +273,9 @@
 
   // modify then re-encode as v0.2 format
   d.setName("/E");
-  BOOST_CHECK(d.wireEncode() ==
-              "0630 0703080145 1400 1500 16031B0100 "
-              "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block);
+  BOOST_CHECK_EQUAL(d.wireEncode(),
+    "0630 0703080145 1400 1500 16031B0100 "
+    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block);
 }
 
 BOOST_AUTO_TEST_CASE(Full)
@@ -293,9 +293,9 @@
 
   // modify then re-encode as v0.2 format
   d.setName("/E");
-  BOOST_CHECK(d.wireEncode() ==
-              "0630 0703080145 1400 1500 16031B0100 "
-              "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block);
+  BOOST_CHECK_EQUAL(d.wireEncode(),
+    "0630 0703080145 1400 1500 16031B0100 "
+    "1720612A79399E60304A9F701C1ECAC7956BF2F1B046E6C6F0D6C29B3FE3A29BAD76"_block);
 }
 
 BOOST_AUTO_TEST_CASE(CriticalElementOutOfOrder)