添加项目文件。

Fluent.Ribbon/Fluent.Ribbon.Tests/Collections/CollectionSyncHelperTests.cs

@@ -0,0 +1,66 @@
+namespace Fluent.Tests.Collections
+{
+    using System.Collections.ObjectModel;
+    using Fluent.Collections;
+    using NUnit.Framework;
+
+    [TestFixture]
+    public class CollectionSyncHelperTests
+    {
+        [Test]
+        public void NewInstanceShouldCopyItems()
+        {
+            var source = new ObservableCollection<string> { "One", "Two" };
+            var target = new ObservableCollection<string>();
+
+            Assert.That(target, Is.Not.EquivalentTo(source));
+
+            var sync = new CollectionSyncHelper<string>(source, target);
+
+            Assert.That(target, Is.EquivalentTo(source));
+        }
+
+        [Test]
+        public void CollectionActionShouldSync()
+        {
+            var source = new ObservableCollection<string>();
+            var target = new ObservableCollection<string>();
+
+            Assert.That(target, Is.EquivalentTo(source));
+
+            var sync = new CollectionSyncHelper<string>(source, target);
+
+            Assert.That(target, Is.EquivalentTo(source));
+
+            {
+                source.Add("One");
+
+                Assert.That(target, Is.EquivalentTo(source));
+            }
+
+            {
+                source.RemoveAt(0);
+
+                Assert.That(target, Is.EquivalentTo(source));
+            }
+
+            {
+                source.Add("One");
+
+                Assert.That(target, Is.EquivalentTo(source));
+            }
+
+            {
+                source[0] = "Two";
+
+                Assert.That(target, Is.EquivalentTo(source));
+            }
+
+            {
+                source.Clear();
+
+                Assert.That(target, Is.EquivalentTo(source));
+            }
+        }
+    }
+}