OPCFoundation
diff --git a/‎Tests/Opc.Ua.Server.Tests/ComplexTypes/ServerComplexTypeSystemIntegrationTests.cs‎
Lines changed: 317 additions & 0 deletions b/‎Tests/Opc.Ua.Server.Tests/ComplexTypes/ServerComplexTypeSystemIntegrationTests.cs‎
Lines changed: 317 additions & 0 deletions
@@ -0,0 +1,317 @@
+/* ========================================================================
+ * Copyright (c) 2005-2025 The OPC Foundation, Inc. All rights reserved.
+ *
+ * OPC Foundation MIT License 1.00
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The complete license agreement can be found here:
+ * http://opcfoundation.org/License/MIT/1.00/
+ * ======================================================================*/
+
+using System;
+using System.Globalization;
+using System.IO;
+using System.Threading.Tasks;
+using NUnit.Framework;
+using Opc.Ua.Client;
+using Opc.Ua.Client.ComplexTypes;
+using Opc.Ua.Client.TestFramework;
+using Opc.Ua.Encoders;
+using Opc.Ua.Server.TestFramework;
+using Opc.Ua.Tests;
+
+namespace Opc.Ua.Server.Tests
+{
+    /// <summary>
+    /// Integration tests for the server side complex type system. A server
+    /// hosts custom DataTypes that were loaded from a NodeSet at runtime and
+    /// have no compiled .NET backing; the server builds dynamic stand-in
+    /// encodeables for them. A real client then reads and writes values of
+    /// those types over the wire, exercising the full server encode / decode
+    /// round-trip (issue #3961).
+    /// </summary>
+    [TestFixture]
+    [Category("Server")]
+    [Category("ComplexTypes")]
+    [SetCulture("en-us")]
+    [SetUICulture("en-us")]
+    [NonParallelizable]
+    public sealed class ServerComplexTypeSystemIntegrationTests
+    {
+        private ITelemetryContext m_telemetry;
+        private ServerFixture<ServerComplexTypesTestServer> m_serverFixture;
+        private ClientFixture m_clientFixture;
+        private ServerComplexTypesTestServer m_server;
+        private Opc.Ua.Client.ISession m_session;
+        private string m_pkiRoot;
+
+        /// <summary>
+        /// Starts a server that hosts the runtime-loaded complex types, connects
+        /// a client and loads the client complex type system.
+        /// </summary>
+        [OneTimeSetUp]
+        public async Task OneTimeSetUpAsync()
+        {
+            m_telemetry = NUnitTelemetryContext.Create();
+            m_pkiRoot = Path.GetTempPath() + Path.GetRandomFileName();
+
+            m_serverFixture = new ServerFixture<ServerComplexTypesTestServer>(
+                t => new ServerComplexTypesTestServer(t))
+            {
+                UriScheme = Utils.UriSchemeOpcTcp,
+                SecurityNone = true,
+                AutoAccept = true,
+                OperationLimits = true
+            };
+
+            m_server = await m_serverFixture.StartAsync(m_pkiRoot).ConfigureAwait(false);
+
+            m_clientFixture = new ClientFixture(m_telemetry);
+            await m_clientFixture.LoadClientConfigurationAsync(m_pkiRoot).ConfigureAwait(false);
+
+            var url = new Uri(
+                Utils.UriSchemeOpcTcp +
+                "://localhost:" +
+                m_serverFixture.Port.ToString(CultureInfo.InvariantCulture));
+
+            try
+            {
+                m_session = await m_clientFixture
+                    .ConnectAsync(url, SecurityPolicies.Basic256Sha256)
+                    .ConfigureAwait(false);
+            }
+            catch (Exception e)
+            {
+                Assert.Ignore(
+                    $"OneTimeSetup failed to create session, tests skipped. Error: {e.Message}");
+            }
+
+            // Load the client complex type system so the runtime types are
+            // registered in the session factory and read values decode correctly.
+            var clientTypeSystem = ComplexTypeSystem.Create(m_session, m_telemetry);
+            clientTypeSystem.DisableDataTypeDictionary = true;
+            bool loaded = await clientTypeSystem.LoadAsync(false, true).ConfigureAwait(false);
+            Assert.That(loaded, Is.True, "the client complex type system should load");
+        }
+
+        /// <summary>
+        /// Closes the session and stops the server.
+        /// </summary>
+        [OneTimeTearDown]
+        public async Task OneTimeTearDownAsync()
+        {
+            if (m_session != null)
+            {
+                await m_session.CloseAsync().ConfigureAwait(false);
+                m_session.Dispose();
+                m_session = null;
+            }
+
+            m_clientFixture?.Dispose();
+            m_server?.Dispose();
+
+            if (m_serverFixture != null)
+            {
+                await m_serverFixture.StopAsync().ConfigureAwait(false);
+            }
+
+            try
+            {
+                if (!string.IsNullOrEmpty(m_pkiRoot) && Directory.Exists(m_pkiRoot))
+                {
+                    Directory.Delete(m_pkiRoot, recursive: true);
+                }
+            }
+            catch
+            {
+                // best-effort cleanup
+            }
+        }
+
+        /// <summary>
+        /// The server must build and register stand-in encodeables for the
+        /// runtime-loaded structure and enumeration DataTypes.
+        /// </summary>
+        [Test]
+        [Order(100)]
+        public void ServerRegistersRuntimeStandInTypes()
+        {
+            IServerInternal server = m_server.CurrentInstance;
+            ushort namespaceIndex = ServerNamespaceIndex(server);
+
+            ExpandedNodeId structureTypeId = NodeId.ToExpandedNodeId(
+                new NodeId(ServerComplexTypesTestNodeManager.TestPointDataType, namespaceIndex),
+                server.NamespaceUris);
+            ExpandedNodeId binaryEncodingId = NodeId.ToExpandedNodeId(
+                new NodeId(ServerComplexTypesTestNodeManager.TestPointBinaryEncoding, namespaceIndex),
+                server.NamespaceUris);
+            ExpandedNodeId enumTypeId = NodeId.ToExpandedNodeId(
+                new NodeId(ServerComplexTypesTestNodeManager.TestColorDataType, namespaceIndex),
+                server.NamespaceUris);
+
+            Assert.Multiple(() =>
+            {
+                Assert.That(
+                    server.Factory.TryGetEncodeableType(structureTypeId, out IEncodeableType structType),
+                    Is.True,
+                    "the runtime TestPoint structure should be registered in the server factory");
+                Assert.That(structType, Is.Not.Null);
+
+                Assert.That(
+                    server.Factory.TryGetEncodeableType(binaryEncodingId, out _),
+                    Is.True,
+                    "the TestPoint binary encoding id should resolve to the structure stand-in");
+
+                Assert.That(
+                    server.Factory.TryGetEnumeratedType(enumTypeId, out IEnumeratedType enumType),
+                    Is.True,
+                    "the runtime TestColor enumeration should be registered in the server factory");
+                Assert.That(enumType, Is.Not.Null);
+            });
+        }
+
+        /// <summary>
+        /// A client reads the runtime structure variable; the server encodes it
+        /// via its stand-in and the client decodes it into a structured value.
+        /// </summary>
+        [Test]
+        [Order(200)]
+        public async Task ClientReadsRuntimeStructureValue()
+        {
+            NodeId nodeId = ClientNodeId(ServerComplexTypesTestNodeManager.PointValueVariable);
+
+            DataValue dataValue = await m_session.ReadValueAsync(nodeId).ConfigureAwait(false);
+            Assert.That(dataValue.IsNull, Is.False);
+            Assert.That(StatusCode.IsGood(dataValue.StatusCode), Is.True);
+
+            IStructure point = ReadStructure(dataValue);
+            Assert.Multiple(() =>
+            {
+                Assert.That(point["X"].TryGetValue(out int x), Is.True);
+                Assert.That(x, Is.EqualTo(3));
+                Assert.That(point["Y"].TryGetValue(out int y), Is.True);
+                Assert.That(y, Is.EqualTo(4));
+                Assert.That(point["Name"].TryGetValue(out string name), Is.True);
+                Assert.That(name, Is.EqualTo("origin"));
+            });
+        }
+
+        /// <summary>
+        /// A client reads the runtime enumeration variable and gets the raw
+        /// enumeration value.
+        /// </summary>
+        [Test]
+        [Order(300)]
+        public async Task ClientReadsRuntimeEnumValue()
+        {
+            NodeId nodeId = ClientNodeId(ServerComplexTypesTestNodeManager.ColorValueVariable);
+
+            DataValue dataValue = await m_session.ReadValueAsync(nodeId).ConfigureAwait(false);
+            Assert.That(dataValue.IsNull, Is.False);
+            Assert.That(StatusCode.IsGood(dataValue.StatusCode), Is.True);
+
+            // TestColor.Green == 1
+            Assert.That(dataValue.WrappedValue.TryGetValue(out int color), Is.True);
+            Assert.That(color, Is.EqualTo(1));
+        }
+
+        /// <summary>
+        /// A client writes a modified runtime structure value; the server
+        /// decodes it via its stand-in, stores it, and returns the updated value
+        /// on the next read.
+        /// </summary>
+        [Test]
+        [Order(400)]
+        public async Task ClientWritesRuntimeStructureValue()
+        {
+            NodeId nodeId = ClientNodeId(ServerComplexTypesTestNodeManager.PointValueVariable);
+
+            DataValue dataValue = await m_session.ReadValueAsync(nodeId).ConfigureAwait(false);
+            IStructure point = ReadStructure(dataValue);
+
+            point["X"] = new Variant(7);
+            point["Y"] = new Variant(8);
+            point["Name"] = new Variant("updated");
+
+            ArrayOf<WriteValue> writeValues =
+            [
+                new WriteValue
+                {
+                    NodeId = nodeId,
+                    AttributeId = Attributes.Value,
+                    Value = new DataValue(dataValue.WrappedValue)
+                }
+            ];
+
+            WriteResponse response = await m_session
+                .WriteAsync(null, writeValues, default)
+                .ConfigureAwait(false);
+            Assert.That(response.Results.IsNull, Is.False);
+            Assert.That(StatusCode.IsGood(response.Results[0]), Is.True,
+                "the server should decode and accept the runtime structure value");
+
+            DataValue readBack = await m_session.ReadValueAsync(nodeId).ConfigureAwait(false);
+            IStructure updated = ReadStructure(readBack);
+            Assert.Multiple(() =>
+            {
+                Assert.That(updated["X"].TryGetValue(out int x), Is.True);
+                Assert.That(x, Is.EqualTo(7));
+                Assert.That(updated["Y"].TryGetValue(out int y), Is.True);
+                Assert.That(y, Is.EqualTo(8));
+                Assert.That(updated["Name"].TryGetValue(out string name), Is.True);
+                Assert.That(name, Is.EqualTo("updated"));
+            });
+        }
+
+        /// <summary>
+        /// Extracts the decoded structured value from a read <see cref="DataValue"/>.
+        /// </summary>
+        private static IStructure ReadStructure(DataValue dataValue)
+        {
+            Assert.That(dataValue.WrappedValue.TryGetValue(out ExtensionObject extensionObject), Is.True);
+            Assert.That(extensionObject.TryGetValue(out IEncodeable encodeable), Is.True);
+            var structure = encodeable as IStructure;
+            Assert.That(structure, Is.Not.Null, "the decoded value should be a complex structure");
+            return structure;
+        }
+
+        /// <summary>
+        /// Resolves a node id in the test namespace on the client side.
+        /// </summary>
+        private NodeId ClientNodeId(uint identifier)
+        {
+            return new NodeId(
+                identifier,
+                (ushort)m_session.NamespaceUris.GetIndex(
+                    ServerComplexTypesTestNodeManager.NamespaceUri));
+        }
+
+        /// <summary>
+        /// Resolves the test namespace index on the server side.
+        /// </summary>
+        private static ushort ServerNamespaceIndex(IServerInternal server)
+        {
+            return (ushort)server.NamespaceUris.GetIndex(
+                ServerComplexTypesTestNodeManager.NamespaceUri);
+        }
+    }
+}