diff --git a/go/pserver/optimizer_test.go b/go/pserver/optimizer_test.go
index 368047d6f89e080016909efbc5bd090c42530bfd..49d9df5898dc69a8e50c4a712e9b04467b45a7b8 100644
--- a/go/pserver/optimizer_test.go
+++ b/go/pserver/optimizer_test.go
@@ -2,6 +2,7 @@ package pserver
 
 import (
 	"io/ioutil"
+	"reflect"
 	"testing"
 )
 
@@ -22,3 +23,26 @@ func TestOptimizerCreateRelease(t *testing.T) {
 	o := newOptimizer(param)
 	o.Cleanup()
 }
+
+func TestOptimizerFull(t *testing.T) {
+	p := Parameter{
+		Name:        "a",
+		ElementType: Float32,
+	}
+	p.Content = []byte{1, 3}
+	config, err := ioutil.ReadFile("./cclient/test/testdata/optimizer.pb.txt")
+	if err != nil {
+		t.Fatalf("read optimizer proto failed")
+	}
+	param := ParameterWithConfig{
+		Param:  p,
+		Config: config,
+	}
+	o := newOptimizer(param)
+	g := Gradient(p)
+	if !reflect.DeepEqual(p.Content, o.GetWeights()) {
+		t.FailNow()
+	}
+	o.UpdateParameter(g)
+	o.Cleanup()
+}