Fixed cairo Path tests.

src/Gtk/Perspex.Cairo/CairoExtensions.cs

@@ -22,6 +22,11 @@ namespace Perspex.Cairo
             return new Cairo.Rectangle(rect.X, rect.Y, rect.Width, rect.Height);
         }
 
+        public static Rect ToPerspex(this Cairo.Rectangle rect)
+        {
+            return new Rect(rect.X, rect.Y, rect.Width, rect.Height);
+        }
+
         public static Rect ToPerspex(this Pango.Rectangle rect)
         {
             return new Rect(

src/Gtk/Perspex.Cairo/Media/DrawingContext.cs

@@ -125,13 +125,12 @@ namespace Perspex.Cairo.Media
                     else
                         _context.Fill();
                 }
+            }
 
-
-                if (pen != null)
-                {
-                    SetPen(pen, geometry.Bounds.Size);
-                    _context.Stroke();
-                }
+            if (pen != null)
+            {
+                SetPen(pen, geometry.Bounds.Size);
+                _context.Stroke();
             }
         }
 

src/Gtk/Perspex.Cairo/Media/StreamGeometryContextImpl.cs

@@ -47,8 +47,7 @@ namespace Perspex.Cairo.Media
             if (isClosed)
                 _context.ClosePath();
 
-            var extents = _context.StrokeExtents();
-            _impl.Bounds = new Rect(extents.X, extents.Y, extents.Width, extents.Height);
+            _impl.Bounds = _context.FillExtents().ToPerspex();
             _impl.Path = _context.CopyPath();
         }
 

src/Gtk/Perspex.Cairo/Media/StreamGeometryImpl.cs

@@ -61,6 +61,7 @@ namespace Perspex.Cairo.Media
 
         public Rect GetRenderBounds(double strokeThickness)
         {
+            // TODO: Calculate properly.
             return Bounds;
         }