diff --git a/pkg/cover/client_test.go b/pkg/cover/client_test.go
new file mode 100644
index 0000000..273355f
--- /dev/null
+++ b/pkg/cover/client_test.go
@@ -0,0 +1,59 @@
+/*
+ Copyright 2020 Qiniu Cloud (qiniu.com)
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+package cover
+
+import (
+	"net/http/httptest"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestClientAction(t *testing.T) {
+	ts := httptest.NewServer(GocServer(os.Stdout))
+	defer ts.Close()
+	var client = NewWorker(ts.URL)
+
+	// regsiter service into goc server
+	var src Service
+	src.Name = "goc"
+	src.Address = "http://127.0.0.1:7777"
+	res, err := client.RegisterService(src)
+	assert.NoError(t, err)
+	assert.Contains(t, string(res), "success")
+
+	// do list and check service
+	res, err = client.ListServices()
+	assert.NoError(t, err)
+	assert.Contains(t, string(res), src.Address)
+	assert.Contains(t, string(res), src.Name)
+
+	// init system and check service again
+	res, err = client.InitSystem()
+	assert.NoError(t, err)
+	res, err = client.ListServices()
+	assert.NoError(t, err)
+	assert.Equal(t, "{}", string(res))
+}
+
+func TestE2E(t *testing.T) {
+	// FIXME: start goc server
+	// FIXME: call goc build to cover goc server
+	// FIXME: do some tests again goc server
+	// FIXME: goc profile and checkout coverage
+}