diff --git a/lib/go/test/tests/thrifttest_driver.go b/lib/go/test/tests/thrifttest_driver.go
index b6188e4..915383f 100644
--- a/lib/go/test/tests/thrifttest_driver.go
+++ b/lib/go/test/tests/thrifttest_driver.go
@@ -127,6 +127,8 @@
 		t.Fatal("TestDouble(-7.012052175215044) failed")
 	}
 
+	// TODO: add testBinary() call
+
 	out := thrifttest.NewXtruct()
 	out.StringThing = "Zero"
 	out.ByteThing = 1
diff --git a/lib/go/test/tests/thrifttest_handler.go b/lib/go/test/tests/thrifttest_handler.go
index 1bbd7de..eef45d5 100644
--- a/lib/go/test/tests/thrifttest_handler.go
+++ b/lib/go/test/tests/thrifttest_handler.go
@@ -72,6 +72,10 @@
 	return thing, nil
 }
 
+func (p *ThriftTestHandler) TestBinary(thing []byte) (r []byte, err error) {
+	return thing, nil
+}
+
 func (p *ThriftTestHandler) TestStruct(thing *thrifttest.Xtruct) (r *thrifttest.Xtruct, err error) {
 	return thing, nil
 }