add persistent proxy/visitor store with CRUD API and web UI (#5188)

pkg/config/source/base_source_test.go

@@ -0,0 +1,48 @@
+package source
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	v1 "github.com/fatedier/frp/pkg/config/v1"
+)
+
+func TestBaseSourceLoadReturnsClonedConfigurers(t *testing.T) {
+	require := require.New(t)
+
+	src := NewConfigSource()
+
+	proxyCfg := &v1.TCPProxyConfig{
+		ProxyBaseConfig: v1.ProxyBaseConfig{
+			Name: "proxy1",
+			Type: "tcp",
+		},
+	}
+	visitorCfg := &v1.STCPVisitorConfig{
+		VisitorBaseConfig: v1.VisitorBaseConfig{
+			Name: "visitor1",
+			Type: "stcp",
+		},
+	}
+
+	err := src.ReplaceAll([]v1.ProxyConfigurer{proxyCfg}, []v1.VisitorConfigurer{visitorCfg})
+	require.NoError(err)
+
+	firstProxies, firstVisitors, err := src.Load()
+	require.NoError(err)
+	require.Len(firstProxies, 1)
+	require.Len(firstVisitors, 1)
+
+	// Mutate loaded objects as runtime completion would do.
+	firstProxies[0].Complete()
+	firstVisitors[0].Complete()
+
+	secondProxies, secondVisitors, err := src.Load()
+	require.NoError(err)
+	require.Len(secondProxies, 1)
+	require.Len(secondVisitors, 1)
+
+	require.Empty(secondProxies[0].GetBaseConfig().LocalIP)
+	require.Empty(secondVisitors[0].GetBaseConfig().BindAddr)
+}