public void Case5_Push_4State_1Undo_1Redo_Index_ShouldBe_3()
{
var editor1 = new Editor("T1", "Text 1", 14, "TH SarabunPSK");
var editor2 = new Editor("T2", "Text 2", 15, "TH SarabunPSK");
var editor3 = new Editor("T3", "Text 3", 16, "TH SarabunPSK");
var editor4 = new Editor("T4", "Text 4", 17, "TH SarabunPSK");
var stateText = $"{editor4.Title} {editor4.Text} {editor4.FontFace} {editor4.FontSize}";
var source = new List <Editor>()
{
editor1, editor2, editor3, editor4
};
source.ForEach(d =>
{
var editorState = new EditorState <Editor>(d);
manager.PushState(editorState);
});
manager.Undo();
var state = manager.Redo();
var equalStateText = stateText == state.Object.ToString();
var equalStateIndex = manager.Index == 3;
Assert.IsTrue(state != null);
Assert.IsTrue(equalStateText, "State text not equal");
Assert.IsTrue(equalStateText);
Assert.IsTrue(equalStateIndex);
}
