add MultigraphPlugin

Author: smdn

examples/Smdn.Net.MuninNode/multigraph/MultigraphPlugin.cs

@@ -0,0 +1,31 @@
+// SPDX-FileCopyrightText: 2025 smdn <smdn@smdn.jp>
+// SPDX-License-Identifier: MIT
+using System;
+using System.Collections.Generic;
+
+namespace Smdn.Net.MuninPlugin;
+
+public class MultigraphPlugin : IMultigraphPlugin {
+  /// <inheritdoc cref="IPlugin.Name"/>
+  public string Name { get; }
+
+  /// <inheritdoc cref="IMultigraphPlugin.Plugins"/>
+  public IReadOnlyCollection<IPlugin> Plugins { get; }
+
+  /// <inheritdoc cref="IPlugin.DataSource"/>
+  public IPluginDataSource DataSource => throw new NotSupportedException();
+
+  /// <inheritdoc cref="IPlugin.GraphAttributes"/>
+  public IPluginGraphAttributes GraphAttributes => throw new NotSupportedException();
+
+  /// <inheritdoc cref="IPlugin.SessionCallback"/>
+  public INodeSessionCallback? SessionCallback => throw new NotSupportedException();
+
+  public MultigraphPlugin(string name, IReadOnlyCollection<IPlugin> plugins)
+  {
+    ArgumentExceptionShim.ThrowIfNullOrWhiteSpace(name, nameof(name));
+
+    Name = name;
+    Plugins = plugins ?? throw new ArgumentNullException(nameof(plugins));
+  }
+}

src/Smdn.Net.MuninNode/Smdn.Net.MuninPlugin/MultigraphPlugin.cs

@@ -19,14 +19,6 @@ namespace Smdn.Net.MuninNode.Protocol;
 
 [TestFixture]
 public partial class MuninProtocolHandlerTests {
-  private class MultigraphPlugin(string name, IReadOnlyCollection<IPlugin> plugins) : IMultigraphPlugin {
-    public string Name { get; } = name;
-    public IReadOnlyCollection<IPlugin> Plugins { get; } = plugins;
-    public IPluginDataSource DataSource => throw new NotSupportedException();
-    public IPluginGraphAttributes GraphAttributes => throw new NotSupportedException();
-    public INodeSessionCallback? SessionCallback => throw new NotSupportedException();
-  }
-
   private class PluginProvider(IReadOnlyCollection<IPlugin> plugins) : IPluginProvider {
     public IReadOnlyCollection<IPlugin> Plugins { get; } = plugins;
     public INodeSessionCallback? SessionCallback => null;

tests/Smdn.Net.MuninNode/Smdn.Net.MuninNode.Protocol/MuninProtocolHandler.cs

@@ -0,0 +1,43 @@
+// SPDX-FileCopyrightText: 2025 smdn <smdn@smdn.jp>
+// SPDX-License-Identifier: MIT
+using System;
+
+using NUnit.Framework;
+
+namespace Smdn.Net.MuninPlugin;
+
+[TestFixture]
+public class MultigraphPluginTests {
+  [TestCase(null, typeof(ArgumentNullException))]
+  [TestCase("", typeof(ArgumentException))]
+  [TestCase(" ", typeof(ArgumentException))]
+  [TestCase("name", null)]
+  public void Ctor_Name(string? name, Type? expectedArgumentExceptionType)
+    => Assert.That(
+      () => new MultigraphPlugin(
+        name: name!,
+        plugins: []
+      ),
+      expectedArgumentExceptionType is null
+        ? Throws.Nothing
+        : Throws
+            .TypeOf(expectedArgumentExceptionType)
+            .With
+            .Property(nameof(ArgumentException.ParamName))
+            .EqualTo("name")
+    );
+
+  [TestCase]
+  public void Ctor_Plugins_ArgumentNull()
+    => Assert.That(
+      () => new MultigraphPlugin(
+        name: "multigraph",
+        plugins: null!
+      ),
+      Throws
+        .ArgumentNullException
+        .With
+        .Property(nameof(ArgumentNullException.ParamName))
+        .EqualTo("plugins")
+    );
+}