package store

import (
	"context"
	"testing"
)

func TestConfigValues_EmptyThenUpsertOverwrites(t *testing.T) {
	db := openTestDB(t)
	ctx := context.Background()

	values, err := db.ConfigValues(ctx)
	if err != nil {
		t.Fatalf("ConfigValues (empty): %v", err)
	}
	if len(values) != 0 {
		t.Fatalf("expected no overrides in a fresh DB, got %v", values)
	}

	if err := db.SetConfigValue(ctx, "session.duration", "168"); err != nil {
		t.Fatalf("SetConfigValue: %v", err)
	}
	// Same key again: upsert must overwrite, not error or duplicate.
	if err := db.SetConfigValue(ctx, "session.duration", "24"); err != nil {
		t.Fatalf("SetConfigValue (overwrite): %v", err)
	}

	values, err = db.ConfigValues(ctx)
	if err != nil {
		t.Fatalf("ConfigValues: %v", err)
	}
	if len(values) != 1 || values["session.duration"] != "24" {
		t.Fatalf("expected {session.duration: 24}, got %v", values)
	}
}