chore: add unit test. (arana-db#323)

* Add: add unit test for api.go.

* Add: add license header.

* fix: fix import format.

* fix: refactor mock file directory.

* fix: fix import format.

* fix: fix path name.

* fix: fix test config file content.

* add: add test case for file.go .

* fix: fix import format.

* fix: fix file format.

* fix: fix code review problem.

* fix: fix error test case.

* fix: fix bootstrap test config.

* fix: fix test config data.

pkg/config/api_test.go

@@ -0,0 +1,132 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 config_test
+
+import (
+	"fmt"
+	"testing"
+)
+
+import (
+	"github.com/golang/mock/gomock"
+
+	"github.com/stretchr/testify/assert"
+)
+
+import (
+	"github.com/arana-db/arana/pkg/config"
+	"github.com/arana-db/arana/testdata"
+)
+
+func TestGetStoreOperate(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+	//mockStore := NewMockStoreOperate(ctrl)
+	tests := []struct {
+		name    string
+		want    config.StoreOperate
+		wantErr assert.ErrorAssertionFunc
+	}{
+		{"GetStoreOperate_1", nil, assert.Error},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := config.GetStoreOperate()
+			if !tt.wantErr(t, err, fmt.Sprintf("GetStoreOperate()")) {
+				return
+			}
+			assert.Equalf(t, tt.want, got, "GetStoreOperate()")
+		})
+	}
+}
+
+func TestInit(t *testing.T) {
+	type args struct {
+		name    string
+		options map[string]interface{}
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantErr assert.ErrorAssertionFunc
+	}{
+		{"Init_1", args{"file", nil}, assert.Error},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.wantErr(t, config.Init(tt.args.name, tt.args.options), fmt.Sprintf("Init(%v, %v)", tt.args.name, tt.args.options))
+		})
+	}
+}
+
+func TestRegister(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+	mockStore := testdata.NewMockStoreOperate(ctrl)
+	mockStore.EXPECT().Name().Times(2).Return("nacos")
+	type args struct {
+		s config.StoreOperate
+	}
+	tests := []struct {
+		name string
+		args args
+	}{
+		{"Register", args{mockStore}},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			config.Register(tt.args.s)
+		})
+	}
+}
+
+func Test_api(t *testing.T) {
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+	mockFileStore := testdata.NewMockStoreOperate(ctrl)
+	mockEtcdStore := testdata.NewMockStoreOperate(ctrl)
+	mockFileStore.EXPECT().Name().Times(2).Return("file")
+	mockEtcdStore.EXPECT().Name().Times(2).Return("etcd")
+	config.Register(mockFileStore)
+	config.Register(mockEtcdStore)
+
+	mockFileStore2 := testdata.NewMockStoreOperate(ctrl)
+	mockFileStore2.EXPECT().Name().AnyTimes().Return("file")
+	assert.Panics(t, func() {
+		config.Register(mockFileStore2)
+	}, "StoreOperate=[file] already exist")
+}
+
+func Test_Init(t *testing.T) {
+	options := make(map[string]interface{}, 0)
+	ctrl := gomock.NewController(t)
+	defer ctrl.Finish()
+	mockFileStore := testdata.NewMockStoreOperate(ctrl)
+	mockFileStore.EXPECT().Name().Times(2).Return("fake")
+	mockFileStore.EXPECT().Init(options).Return(nil)
+	err := config.Init("fake", options)
+	assert.Error(t, err)
+
+	config.Register(mockFileStore)
+	err = config.Init("fake", options)
+	assert.NoError(t, err)
+
+	store, err := config.GetStoreOperate()
+	assert.NoError(t, err)
+	assert.NotNil(t, store)
+}

pkg/config/etcd/etcd_test.go

@@ -37,7 +37,7 @@ import (
 	"github.com/arana-db/arana/testdata"
 )
 
-const _defaultEtcdV3WorkDir = "/tmp/dubbo-go-arana/config"
+const _defaultEtcdV3WorkDir = "/tmp/arana/config"
 
 var (
 	mockConfData = map[config.PathKey]string{

pkg/config/file/file.go

@@ -115,6 +115,7 @@ func (s *storeOperate) Get(key config.PathKey) ([]byte, error) {
 
 // Watch TODO change notification through file inotify mechanism
 func (s *storeOperate) Watch(key config.PathKey) (<-chan []byte, error) {
+	s.lock.Lock()
 	defer s.lock.Unlock()
 
 	if _, ok := s.receivers[key]; !ok {