軟件測試中有關Emit與Reflection性能對比測試

發布: 2009-5-21 10:17 | 作者: 不詳 | 來源: 測試時代采編 | 查看: 228次 | 進入軟件測試論壇討論

    public static object GetValueEmit(Type type, string propertyName, object instance)
    {
        return EmitTest.GetEmitInvoker(type, propertyName)(instance); }

    //Use the cached dynamic method to  get the property’s value
    public static object GetValueEmitWithCache(Type type, string propertyName, object instance)
    {
        GetPropertyValueInvoker invoker = null;
        if (!_invokerCache.TryGetValue(propertyName, out invoker))
        {
            invoker = EmitTest.GetEmitInvoker(type, propertyName);
            _invokerCache[propertyName] = invoker;
        }

        return invoker(instance);
    }

    //Use reflection to get the property’s value
    public static object GetValueReflect(Type type, string propertyName, object instance)
    {
        PropertyInfo propInfo = type.GetProperty(propertyName
            , BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
        return propInfo.GetValue(instance, null);
    }
}
測試用的實體類:
public class TestEntity
{
    private string _string1;
    private int _int1;
    private DateTime _datetime1;

    public string String1
    {
        get { return this._string1; }
        set { this._string1 = value; }
    }
    public int Int1
    {
        get { return this._int1; }
        set { this._int1 = value; }
    }
    public DateTime Datetime1
    {
        get { return this._datetime1; }
        set { this._datetime1 = value; }
    }
}
測試代碼:
TestEntity entity1 = new TestEntity();
entity1.String1 = \"a string field\";
entity1.Int1 = 123;
entity1.Datetime1 = DateTime.Now;