WTF is this

common/geosite/geosite_test.go

@@ -0,0 +1,34 @@
+package geosite_test
+
+import (
+	"bytes"
+	"testing"
+
+	"github.com/sagernet/sing-box/common/geosite"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestGeosite(t *testing.T) {
+	t.Parallel()
+
+	var buffer bytes.Buffer
+	err := geosite.Write(&buffer, map[string][]geosite.Item{
+		"test": {
+			{
+				Type:  geosite.RuleTypeDomain,
+				Value: "example.org",
+			},
+		},
+	})
+	require.NoError(t, err)
+	reader, codes, err := geosite.NewReader(bytes.NewReader(buffer.Bytes()))
+	require.NoError(t, err)
+	require.Equal(t, []string{"test"}, codes)
+	items, err := reader.Read("test")
+	require.NoError(t, err)
+	require.Equal(t, []geosite.Item{{
+		Type:  geosite.RuleTypeDomain,
+		Value: "example.org",
+	}}, items)
+}