feat: 新增启动参数设置页面，区分 desktop 可编辑与 server 只读

backend/internal/config/config_metadata_test.go

@@ -0,0 +1,94 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"gopkg.in/yaml.v3"
+)
+
+func TestLoadDesktopConfigAtPath_WithMetadata(t *testing.T) {
+	dir := t.TempDir()
+	configPath := filepath.Join(dir, "config.yaml")
+
+	cfg := DefaultConfig()
+	cfg.Server.Port = 8888
+	data, err := yaml.Marshal(cfg)
+	require.NoError(t, err)
+	require.NoError(t, os.WriteFile(configPath, data, 0o600))
+
+	loaded, meta, err := loadConfigWithMetadata(loadOptions{
+		configPathOverride: configPath,
+		useCLI:             false,
+		useEnv:             false,
+		useConfigFlag:      false,
+	})
+	require.NoError(t, err)
+	assert.Equal(t, 8888, loaded.Server.Port)
+	assert.Equal(t, configPath, meta.ConfigPath)
+}
+
+func TestSaveConfigToPath(t *testing.T) {
+	dir := t.TempDir()
+	configPath := filepath.Join(dir, "sub", "config.yaml")
+
+	cfg := DefaultConfig()
+	cfg.Server.Port = 7777
+
+	err := SaveConfigToPath(cfg, configPath)
+	require.NoError(t, err)
+
+	data, err := os.ReadFile(configPath)
+	require.NoError(t, err)
+	assert.Contains(t, string(data), "7777")
+}
+
+func TestSaveConfigToPath_InvalidDir(t *testing.T) {
+	cfg := DefaultConfig()
+	err := SaveConfigToPath(cfg, "/dev/null/impossible/config.yaml")
+	assert.Error(t, err)
+}
+
+func TestDurationConversion(t *testing.T) {
+	cfg := DefaultConfig()
+	dto := configToDTO(cfg)
+
+	parsed, err := time.ParseDuration(dto.Server.ReadTimeout)
+	require.NoError(t, err)
+	assert.Equal(t, cfg.Server.ReadTimeout, parsed)
+
+	parsed, err = time.ParseDuration(dto.Database.ConnMaxLifetime)
+	require.NoError(t, err)
+	assert.Equal(t, cfg.Database.ConnMaxLifetime, parsed)
+}
+
+func configToDTO(c *Config) struct {
+	Server struct {
+		Port         int    `json:"port"`
+		ReadTimeout  string `json:"read_timeout"`
+		WriteTimeout string `json:"write_timeout"`
+	}
+	Database struct {
+		ConnMaxLifetime string `json:"conn_max_lifetime"`
+	}
+} {
+	var result struct {
+		Server struct {
+			Port         int    `json:"port"`
+			ReadTimeout  string `json:"read_timeout"`
+			WriteTimeout string `json:"write_timeout"`
+		}
+		Database struct {
+			ConnMaxLifetime string `json:"conn_max_lifetime"`
+		}
+	}
+	result.Server.Port = c.Server.Port
+	result.Server.ReadTimeout = c.Server.ReadTimeout.String()
+	result.Server.WriteTimeout = c.Server.WriteTimeout.String()
+	result.Database.ConnMaxLifetime = c.Database.ConnMaxLifetime.String()
+	return result
+}