fix build, correctly size UIScrollViews

Summary: Closes https://github.com/facebook/yoga/pull/626

Reviewed By: emilsjolander

Differential Revision: D5824425

Pulled By: splhack

fbshipit-source-id: e1a8dda5e86e2705afa7f6630a6757491a94c6d6

csharp/iOS/Facebook.YogaKit.iOS.Tests/YogaKitNativeTest.cs

@@ -0,0 +1,51 @@
+using System.Drawing;
+using Facebook.Yoga;
+using NUnit.Framework;
+using System;
+using UIKit;
+using CoreGraphics;
+
+namespace Facebook.YogaKit.iOS.Tests
+{
+	[TestFixture]
+	public class YogaKitNativeTest
+	{
+		[Test]
+		public void ScrollViewVertical()
+		{
+            var view = new UIScrollView() {
+                Frame = new CGRect(0, 0, 100, 100),
+            };
+
+            view.Yoga().Overflow = YogaOverflow.Scroll;
+            var subview = new UIView();
+            subview.Yoga().Height = 1000;
+            subview.Yoga().IsEnabled = true;
+
+            view.AddSubview(subview);
+            view.Yoga().IsEnabled = true;
+            view.Yoga().ApplyLayout();
+            Assert.True(view.ContentSize.Height == 1000);
+		}
+
+        [Test]
+        public void NormalViewVertical()
+        {
+            var view = new UIView() {
+                Frame = new CGRect(0,0, 100, 100),
+            };
+
+
+            var subview = new UIView();
+            subview.Yoga().Height = 1000;
+            subview.Yoga().Width = 2;
+            subview.Yoga().IsEnabled = true;
+
+            view.AddSubview(subview);
+            view.Yoga().IsEnabled = true;
+            view.Yoga().ApplyLayout();
+            Assert.True(view.Bounds.Height == 100);
+        }
+
+	}
+}