Add spacing properties

Summary:
Align C# implementation with YogaKit #322
Closes https://github.com/facebook/yoga/pull/327

Reviewed By: emilsjolander

Differential Revision: D4390687

Pulled By: splhack

fbshipit-source-id: 28c87a45898fcd958a422d5e254ead0ec00d3562

csharp/tests/Facebook.Yoga/YogaNodeSpacingTest.cs

@@ -0,0 +1,114 @@
+/**
+ * Copyright (c) 2014-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+using NUnit.Framework;
+using System;
+
+/**
+ * Tests for {@link YogaNode}.
+ */
+namespace Facebook.Yoga
+{
+    [TestFixture]
+    public class YogaNodeSpacingTest
+    {
+        [Test]
+        public void TestObjectInitializer()
+        {
+            YogaNode node = new YogaNode
+            {
+                Top = 1,
+                Bottom = 2,
+                Left = 3,
+                Right = 4,
+
+                MarginTop = 5,
+                MarginBottom = 6,
+                MarginLeft = 7,
+                MarginRight = 8,
+
+                PaddingTop = 9,
+                PaddingBottom = 10,
+                PaddingLeft = 11,
+                PaddingRight = 12,
+
+                BorderTopWidth = 13,
+                BorderBottomWidth = 14,
+                BorderLeftWidth = 15,
+                BorderRightWidth = 16,
+            };
+
+            Assert.AreEqual(1.Px(), node.Top);
+            Assert.AreEqual(2.Px(), node.Bottom);
+            Assert.AreEqual(3.Px(), node.Left);
+            Assert.AreEqual(4.Px(), node.Right);
+
+            Assert.AreEqual(5.Px(), node.MarginTop);
+            Assert.AreEqual(6.Px(), node.MarginBottom);
+            Assert.AreEqual(7.Px(), node.MarginLeft);
+            Assert.AreEqual(8.Px(), node.MarginRight);
+
+            Assert.AreEqual(9.Px(), node.PaddingTop);
+            Assert.AreEqual(10.Px(), node.PaddingBottom);
+            Assert.AreEqual(11.Px(), node.PaddingLeft);
+            Assert.AreEqual(12.Px(), node.PaddingRight);
+
+            Assert.AreEqual(13, node.BorderTopWidth);
+            Assert.AreEqual(14, node.BorderBottomWidth);
+            Assert.AreEqual(15, node.BorderLeftWidth);
+            Assert.AreEqual(16, node.BorderRightWidth);
+        }
+
+        [Test]
+        public void TestWriteRead()
+        {
+            YogaNode node = new YogaNode();
+
+            node.Top = 1;
+            node.Bottom = 2;
+            node.Left = 3;
+            node.Right = 4;
+
+            node.MarginTop = 5;
+            node.MarginBottom = 6;
+            node.MarginLeft = 7;
+            node.MarginRight = 8;
+
+            node.PaddingTop = 9;
+            node.PaddingBottom = 10;
+            node.PaddingLeft = 11;
+            node.PaddingRight = 12;
+
+            node.BorderTopWidth = 13;
+            node.BorderBottomWidth = 14;
+            node.BorderLeftWidth = 15;
+            node.BorderRightWidth = 16;
+
+            Assert.AreEqual(1.Px(), node.Top);
+            Assert.AreEqual(2.Px(), node.Bottom);
+            Assert.AreEqual(3.Px(), node.Left);
+            Assert.AreEqual(4.Px(), node.Right);
+
+            Assert.AreEqual(5.Px(), node.MarginTop);
+            Assert.AreEqual(6.Px(), node.MarginBottom);
+            Assert.AreEqual(7.Px(), node.MarginLeft);
+            Assert.AreEqual(8.Px(), node.MarginRight);
+
+            Assert.AreEqual(9.Px(), node.PaddingTop);
+            Assert.AreEqual(10.Px(), node.PaddingBottom);
+            Assert.AreEqual(11.Px(), node.PaddingLeft);
+            Assert.AreEqual(12.Px(), node.PaddingRight);
+
+            Assert.AreEqual(13, node.BorderTopWidth);
+            Assert.AreEqual(14, node.BorderBottomWidth);
+            Assert.AreEqual(15, node.BorderLeftWidth);
+            Assert.AreEqual(16, node.BorderRightWidth);
+        }
+    }
+}