public void NewLineCommand_AddNewLine()
{
NewLineCommand command = new NewLineCommand(0, 0);
command.Execute(this.document);
Assert.AreEqual(5, this.document.Lines.Count);
Assert.AreEqual("", this.document.Lines[0]);
Assert.AreEqual(this.initialDocument.Lines[0], this.document.Lines[1]);
command.Undo();
Assert.AreEqual(this.initialDocument.Text, this.document.Text);
command = new NewLineCommand(0, 2);
command.Execute(this.document);
Assert.AreEqual(5, this.document.Lines.Count);
Assert.AreEqual("he", this.document.Lines[0]);
Assert.AreEqual("llo", this.document.Lines[1]);
command.Undo();
Assert.AreEqual(this.initialDocument.Text, this.document.Text);
command = new NewLineCommand(0, 5);
command.Execute(this.document);
Assert.AreEqual(5, this.document.Lines.Count);
Assert.AreEqual("hello", this.document.Lines[0]);
Assert.AreEqual("", this.document.Lines[1]);
command.Undo();
Assert.AreEqual(this.initialDocument.Text, this.document.Text);
command = new NewLineCommand(0, 6);
command.Execute(this.document);
Assert.AreEqual(5, this.document.Lines.Count);
Assert.AreEqual("", this.document.Lines[1]);
Assert.AreEqual("world", this.document.Lines[2]);
command.Undo();
Assert.AreEqual(this.initialDocument.Text, this.document.Text);
command = new NewLineCommand(0, 11);
command.Execute(this.document);
Assert.AreEqual(5, this.document.Lines.Count);
Assert.AreEqual("", this.document.Lines[2]);
Assert.AreEqual("", this.document.Lines[3]);
command.Undo();
Assert.AreEqual(this.initialDocument.Text, this.document.Text);
command = new NewLineCommand(0, this.document.Text.Length);
command.Execute(this.document);
Assert.AreEqual(5, this.document.Lines.Count);
Assert.AreEqual("123", this.document.Lines[3]);
Assert.AreEqual("", this.document.Lines[4]);
command.Undo();
Assert.AreEqual(this.initialDocument.Text, this.document.Text);
}
public void NewLineCommand_AddNewLine_WrongCaretIndex()
{
NewLineCommand command = new NewLineCommand(0, this.document.Text.Length + 1);
command.Execute(this.document);
}