public void TabInformationSetUp()
{
this.tabinfo = Activator.CreateInstance(typeof(TabInformations), true) as TabInformations;
// タブを追加
this.tabinfo.AddTab("Recent", MyCommon.TabUsageType.Home, null);
this.tabinfo.AddTab("Reply", MyCommon.TabUsageType.Mentions, null);
this.tabinfo.AddTab("DM", MyCommon.TabUsageType.DirectMessage, null);
this.tabinfo.AddTab("Favorites", MyCommon.TabUsageType.Favorites, null);
this.tabinfo.AddTab("MyTab1", MyCommon.TabUsageType.UserDefined, null);
// 一応 TabInformation.GetInstance() でも取得できるようにする
var field = typeof(TabInformations).GetField("_instance",
BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.SetField);
field.SetValue(null, this.tabinfo);
}