public void TestExecuteWithNonGridParameter()
{
ChangeFocusCommand changeFocusCommand = new ChangeFocusCommand();
var exception = Assert.ThrowsException <ArgumentException>(() => changeFocusCommand.Execute(new TextBlock()));
Assert.AreEqual("parameter is not of type Grid", exception.Message);
}
public void TestExecuteWithGridParameter()
{
ChangeFocusCommand changeFocusCommand = new ChangeFocusCommand();
Grid grid = new Grid();
changeFocusCommand.Execute(grid);
Assert.IsFalse(grid.IsFocused); //Grid.Focus will never set this flag to true as Grids are not logically focusable
}
