Add unittest

Summary: - Unittest for P/Invoke integration

Reviewed By: emilsjolander

Differential Revision: D3977114

fbshipit-source-id: 11f6bf747898433226c920997839e938734cbd77

tests/csharp/Facebook.CSSLayout/CSSNodeTest.cs

@@ -0,0 +1,102 @@
+/**
+ * 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;
+
+/**
+ * Tests for {@link CSSNode}.
+ */
+namespace Facebook.CSSLayout
+{
+    [TestFixture]
+    public class CSSNodeTest
+    {
+        [Test]
+        public void TestAddChildGetParent()
+        {
+            CSSNode parent = new CSSNode();
+            parent.Initialize();
+            CSSNode child = new CSSNode();
+            child.Initialize();
+    
+            Assert.IsNull(child.Parent);
+            Assert.AreEqual(0, parent.Count);
+    
+            parent.Insert(0, child);
+    
+            Assert.AreEqual(1, parent.Count);
+            Assert.AreEqual(child, parent[0]);
+            Assert.AreEqual(parent, child.Parent);
+    
+            parent.RemoveAt(0);
+    
+            Assert.IsNull(child.Parent);
+            Assert.AreEqual(0, parent.Count);
+        }
+
+        [Test]
+        [ExpectedException("System.InvalidOperationException")]
+        public void TestAlreadyInitialize()
+        {
+            CSSNode node = new CSSNode();
+            node.Initialize();
+            node.Initialize();
+        }
+
+        [Test]
+        [ExpectedException("System.InvalidOperationException")]
+        public void TestNullNativePointer()
+        {
+            CSSNode node = new CSSNode();
+            node.CalculateLayout();
+        }
+
+        [Test]
+        [ExpectedException("System.InvalidOperationException")]
+        public void TestNullNativePointerWithReset()
+        {
+            CSSNode node = new CSSNode();
+            node.Reset();
+        }
+
+        [Test]
+        [ExpectedException("System.ObjectDisposedException")]
+        public void TestDisposed()
+        {
+            CSSNode node = new CSSNode();
+            node.Initialize();
+            node.Dispose();
+            node.CalculateLayout();
+        }
+
+        [Test]
+        public void TestReset()
+        {
+            CSSNode node = new CSSNode();
+            node.Initialize();
+            node.Reset();
+            node.Initialize();
+        }
+
+        [Test]
+        public void TestDispose()
+        {
+            CSSNode node = new CSSNode();
+            node.Initialize();
+            node.Dispose();
+        }
+
+        [Test]
+        public void TestDestructor()
+        {
+            CSSNode node = new CSSNode();
+            node.Initialize();
+        }
+    }
+}