package codex import (	"encoding/json"	"os"	"path/filepath"	"testing") func TestSaveTokenToFile_PreservesCustomMetadata(t *testing.T) {	tempDir := t.TempDir()	authFilePath := filepath.Join(tempDir, "codex-test.json") 	storage := &CodexTokenStorage{		Type:         "codex",		Email:        "user@example.com",		AccessToken:  "new-access-token",		RefreshToken: "new-refresh-token",		IDToken:      "new-id-token",		AccountID:    "new-account",		Expire:       "2026-12-31T23:59:59Z",		LastRefresh:  "2026-04-14T12:00:00Z",	}	storage.SetMetadata(map[string]any{		"disabled":   false,		"prefix":     "my-prefix",		"websockets": false,		"note":       "my important note",		"proxy_url":  "http://proxy:8080",		"weight":     float64(42),	}) 	if errSave := storage.SaveTokenToFile(authFilePath); errSave != nil {		t.Fatalf("SaveTokenToFile() error = %v", errSave)	} 	savedRaw, errRead := os.ReadFile(authFilePath)	if errRead != nil {		t.Fatalf("os.ReadFile error = %v", errRead)	} 	var saved map[string]any	if errUnmarshal := json.Unmarshal(savedRaw, &saved); errUnmarshal != nil {		t.Fatalf("json.Unmarshal error = %v", errUnmarshal)	} 	// Verify updated OAuth token fields	if saved["access_token"] != "new-access-token" {		t.Errorf("access_token = %v, want new-access-token", saved["access_token"])	}	if saved["refresh_token"] != "new-refresh-token" {		t.Errorf("refresh_token = %v, want new-refresh-token", saved["refresh_token"])	}	if saved["id_token"] != "new-id-token" {		t.Errorf("id_token = %v, want new-id-token", saved["id_token"])	}	if saved["account_id"] != "new-account" {		t.Errorf("account_id = %v, want new-account", saved["account_id"])	} 	// Verify custom fields in metadata	if saved["prefix"] != "my-prefix" {		t.Errorf("prefix = %v, want my-prefix", saved["prefix"])	}	if saved["websockets"] != false {		t.Errorf("websockets = %v, want false", saved["websockets"])	}	if saved["note"] != "my important note" {		t.Errorf("note = %v, want my important note", saved["note"])	}	if saved["proxy_url"] != "http://proxy:8080" {		t.Errorf("proxy_url = %v, want http://proxy:8080", saved["proxy_url"])	}	if saved["weight"] != float64(42) {		t.Errorf("weight = %v, want 42", saved["weight"])	}}