public void TopologicalSort_Missing_Add()
{
var root = new View();
var sub1 = new View();
root.Add(sub1);
var sub2 = new View();
sub1.Width = Dim.Width(sub2);
Assert.Throws <InvalidOperationException> (() => root.LayoutSubviews());
sub2.Width = Dim.Width(sub1);
Assert.Throws <InvalidOperationException> (() => root.LayoutSubviews());
}
public void View_Difference_Between_An_Object_Initializer_And_A_Constructor()
{
// Object Initializer
var view = new View()
{
X = 1,
Y = 2,
Width = 3,
Height = 4
};
Assert.Equal(1, view.X);
Assert.Equal(2, view.Y);
Assert.Equal(3, view.Width);
Assert.Equal(4, view.Height);
Assert.True(view.Frame.IsEmpty);
Assert.True(view.Bounds.IsEmpty);
view.LayoutSubviews();
Assert.Equal(1, view.X);
Assert.Equal(2, view.Y);
Assert.Equal(3, view.Width);
Assert.Equal(4, view.Height);
Assert.False(view.Frame.IsEmpty);
Assert.False(view.Bounds.IsEmpty);
// Default Constructor
view = new View();
Assert.Equal(0, view.X);
Assert.Equal(0, view.Y);
Assert.Equal(0, view.Width);
Assert.Equal(0, view.Height);
Assert.True(view.Frame.IsEmpty);
Assert.True(view.Bounds.IsEmpty);
// Constructor
view = new View(1, 2, "");
Assert.Null(view.X);
Assert.Null(view.Y);
Assert.Null(view.Width);
Assert.Null(view.Height);
Assert.False(view.Frame.IsEmpty);
Assert.True(view.Bounds.IsEmpty);
// Default Constructor and post assignment equivalent to Object Initializer
view = new View();
view.X = 1;
view.Y = 2;
view.Width = 3;
view.Height = 4;
Assert.Equal(1, view.X);
Assert.Equal(2, view.Y);
Assert.Equal(3, view.Width);
Assert.Equal(4, view.Height);
Assert.True(view.Frame.IsEmpty);
Assert.True(view.Bounds.IsEmpty);
}
