public void TestCutWindowBiggerThanScreen()
{
var screen = new Desktop.Rectangle(0, 0, 20, 10);
var window = new Desktop.Rectangle(-10, -10, 60, 30);
var cut = window.Cut(screen);
cut.Should().BeEquivalentTo(new[]
{
// Top "row"
new Desktop.Rectangle(-10, -10, 10, 10),
new Desktop.Rectangle(0, -10, 20, 10),
new Desktop.Rectangle(20, -10, 30, 10),
// "Left side"
new Desktop.Rectangle(-10, 0, 10, 10),
// "Right side"
new Desktop.Rectangle(20, 0, 30, 10),
// "Bottom row"
new Desktop.Rectangle(-10, 10, 10, 10),
new Desktop.Rectangle(0, 10, 20, 10),
new Desktop.Rectangle(20, 10, 30, 10)
},
"because the screen cuts a straight rectangle into the window, which should have been modelled as six rectangles");
}
public void TestCutCompletelyInside()
{
var screen = new Desktop.Rectangle(0, 0, 10, 10);
var window = new Desktop.Rectangle(4, 4, 2, 2);
var cut = window.Cut(screen);
cut.Should().BeEmpty("because the window is completely within the screen");
}
public void TestCutIntersectRight()
{
var screen = new Desktop.Rectangle(10, 10, 10, 10);
var window = new Desktop.Rectangle(5, 11, 10, 4);
var cut = window.Cut(screen);
cut.Should().Equal(new[] { new Desktop.Rectangle(5, 11, 5, 4) },
"because the screen cuts away the right-hand side of the window");
}
public void TestCutIntersectLeft()
{
var screen = new Desktop.Rectangle(0, 0, 10, 10);
var window = new Desktop.Rectangle(-1, 4, 2, 2);
var cut = window.Cut(screen);
cut.Should().Equal(new[] { new Desktop.Rectangle(-1, 4, 1, 2) },
"because the screen cuts away the right-hand side of the window");
}
public void TestCutCompletelyOutside()
{
var screen = new Desktop.Rectangle(0, 0, 10, 10);
var window = new Desktop.Rectangle(11, 11, 2, 2);
var cut = window.Cut(screen);
cut.Should().Equal(new[] { window },
"because the screen doesn't cut anway anything from the window because the latter is complete off-screen");
}
