Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/Ringtoets.Piping.Forms.Test.csproj
===================================================================
diff -u -rb6d165f6edddc4271e94c5f6d70c12d4ba0c60eb -r00a7c71174be6e27262ae53eed9d06ee24c553d3
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/Ringtoets.Piping.Forms.Test.csproj	(.../Ringtoets.Piping.Forms.Test.csproj)	(revision b6d165f6edddc4271e94c5f6d70c12d4ba0c60eb)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/Ringtoets.Piping.Forms.Test.csproj	(.../Ringtoets.Piping.Forms.Test.csproj)	(revision 00a7c71174be6e27262ae53eed9d06ee24c553d3)
@@ -59,6 +59,7 @@
     <Reference Include="System.Windows.Forms" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="TreeNodeInfos\CategoryTreeFolderTreeNodeInfoTest.cs" />
     <Compile Include="TreeNodeInfos\EmptyPipingCalculationReportTreeNodeInfoTest.cs" />
     <Compile Include="TreeNodeInfos\EmptyPipingOutputTreeNodeInfoTest.cs" />
     <Compile Include="TreeNodeInfos\PipingCalculationGroupContextTreeNodeInfoTest.cs" />
@@ -133,6 +134,10 @@
       <Project>{e38c11e0-4384-44dd-9f5b-ee73d79fd7f5}</Project>
       <Name>Ringtoets.Common.Placeholder</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\Integration\src\Ringtoets.Integration.Plugin\Ringtoets.Integration.Plugin.csproj">
+      <Project>{C8383B76-B3F1-4E6E-B56C-527B469FA20A}</Project>
+      <Name>Ringtoets.Integration.Plugin</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\src\Ringtoets.Piping.Data\Ringtoets.Piping.Data.csproj">
       <Project>{ce994cc9-6f6a-48ac-b4be-02c30a21f4db}</Project>
       <Name>Ringtoets.Piping.Data</Name>
Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/TreeNodeInfos/CategoryTreeFolderTreeNodeInfoTest.cs
===================================================================
diff -u
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/TreeNodeInfos/CategoryTreeFolderTreeNodeInfoTest.cs	(revision 0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/TreeNodeInfos/CategoryTreeFolderTreeNodeInfoTest.cs	(revision 00a7c71174be6e27262ae53eed9d06ee24c553d3)
@@ -0,0 +1,142 @@
+using System.Linq;
+using Core.Common.Controls.TreeView;
+using Core.Common.Gui;
+using Core.Common.Gui.ContextMenu;
+using Core.Common.TestUtil;
+using NUnit.Framework;
+using Rhino.Mocks;
+using Ringtoets.Common.Forms.PresentationObjects;
+using Ringtoets.Integration.Plugin;
+using RingtoetsCommonFormsResources = Ringtoets.Common.Forms.Properties.Resources;
+
+namespace Ringtoets.Piping.Forms.Test.TreeNodeInfos
+{
+    [TestFixture]
+    public class CategoryTreeFolderTreeNodeInfoTest
+    {
+        private MockRepository mocks;
+        private RingtoetsGuiPlugin plugin;
+        private TreeNodeInfo info;
+
+        [SetUp]
+        public void SetUp()
+        {
+            mocks = new MockRepository();
+            plugin = new RingtoetsGuiPlugin();
+            info = plugin.GetTreeNodeInfos().First(tni => tni.TagType == typeof(CategoryTreeFolder));
+        }
+
+        [Test]
+        public void Initialized_Always_ExpectedPropertiesSet()
+        {
+            // Assert
+            Assert.AreEqual(typeof(CategoryTreeFolder), info.TagType);
+            Assert.IsNull(info.EnsureVisibleOnCreate);
+            Assert.IsNull(info.CanRename);
+            Assert.IsNull(info.OnNodeRenamed);
+            Assert.IsNull(info.CanRemove);
+            Assert.IsNull(info.OnNodeRemoved);
+            Assert.IsNull(info.CanCheck);
+            Assert.IsNull(info.IsChecked);
+            Assert.IsNull(info.OnNodeChecked);
+            Assert.IsNull(info.CanDrag);
+            Assert.IsNull(info.CanDrop);
+            Assert.IsNull(info.CanInsert);
+            Assert.IsNull(info.OnDrop);
+        }
+
+        [Test]
+        public void Text_Always_ReturnsName()
+        {
+            // Setup
+            var testname = "testName";
+            var categoryTreeFolder = new CategoryTreeFolder(testname, new object[0]);
+
+            // Call
+            var text = info.Text(categoryTreeFolder);
+
+            // Assert
+            Assert.AreEqual(testname, text);
+        }
+
+        [Test]
+        public void Image_TreeFolderOfCategoryGeneral_ReturnsGeneralFolderIcon()
+        {
+            // Setup
+            var categoryTreeFolder = new CategoryTreeFolder("", new object[0]);
+
+            // Call
+            var image = info.Image(categoryTreeFolder);
+
+            // Assert
+            TestHelper.AssertImagesAreEqual(RingtoetsCommonFormsResources.GeneralFolderIcon, image);
+        }
+
+        [Test]
+        public void Image_TreeFolderOfCategoryInput_ReturnsInputFolderIcon()
+        {
+            // Setup
+            var categoryTreeFolder = new CategoryTreeFolder("", new object[0], TreeFolderCategory.Input);
+
+            // Call
+            var image = info.Image(categoryTreeFolder);
+
+            // Assert
+            TestHelper.AssertImagesAreEqual(RingtoetsCommonFormsResources.InputFolderIcon, image);
+        }
+
+        [Test]
+        public void Image_TreeFolderOfCategoryOutput_ReturnsOutputFolderIcon()
+        {
+            // Setup
+            var categoryTreeFolder = new CategoryTreeFolder("", new object[0], TreeFolderCategory.Output);
+
+            // Call
+            var image = info.Image(categoryTreeFolder);
+
+            // Assert
+            TestHelper.AssertImagesAreEqual(RingtoetsCommonFormsResources.OutputFolderIcon, image);
+        }
+
+        [Test]
+        public void ChildNodeObjects_Always_ReturnsChildsOnData()
+        {
+            // Setup
+            var object1 = new object();
+            var object2 = new object();
+            var categoryTreeFolder = new CategoryTreeFolder("", new[] { object1, object2 });
+
+            // Call
+            var objects = info.ChildNodeObjects(categoryTreeFolder);
+
+            // Assert
+            CollectionAssert.AreEqual(new[] { object1, object2 }, objects);
+
+            mocks.VerifyAll();
+        }
+
+        [Test]
+        public void ContextMenuStrip_Always_CallsContextMenuBuilderMethods()
+        {
+            // Setup
+            var gui = mocks.StrictMock<IGui>();
+            var menuBuilderMock = mocks.StrictMock<IContextMenuBuilder>();
+            var treeViewControlMock = mocks.StrictMock<TreeViewControl>();
+
+            menuBuilderMock.Expect(mb => mb.AddExpandAllItem()).Return(menuBuilderMock);
+            menuBuilderMock.Expect(mb => mb.AddCollapseAllItem()).Return(menuBuilderMock);
+            menuBuilderMock.Expect(mb => mb.Build()).Return(null);
+
+            gui.Expect(cmp => cmp.Get(null, treeViewControlMock)).Return(menuBuilderMock);
+            mocks.ReplayAll();
+
+            plugin.Gui = gui;
+
+            // Call
+            info.ContextMenuStrip(null, null, treeViewControlMock);
+
+            // Assert
+            mocks.VerifyAll();
+        }
+    }
+}
Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/TreeNodeInfos/EmptyPipingCalculationReportTreeNodeInfoTest.cs
===================================================================
diff -u -rc96f5829ddb898717ba2e98091a2219308f05d3e -r00a7c71174be6e27262ae53eed9d06ee24c553d3
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/TreeNodeInfos/EmptyPipingCalculationReportTreeNodeInfoTest.cs	(.../EmptyPipingCalculationReportTreeNodeInfoTest.cs)	(revision c96f5829ddb898717ba2e98091a2219308f05d3e)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/TreeNodeInfos/EmptyPipingCalculationReportTreeNodeInfoTest.cs	(.../EmptyPipingCalculationReportTreeNodeInfoTest.cs)	(revision 00a7c71174be6e27262ae53eed9d06ee24c553d3)
@@ -50,7 +50,7 @@
         }
 
         [Test]
-        public void Text_Always_ReturnsName()
+        public void Text_Always_ReturnsFromResource()
         {
             // Call
             var text = info.Text(null);