feat(mocks): IFoo.Mock() discovery with generic fallback and ORP resolution

TUnit.Mocks.SourceGenerator.Tests/MockGeneratorTests.cs

@@ -628,4 +628,29 @@ public virtual void DoWork() { }
 
         return VerifyGeneratorOutput(source);
     }
+
+    [Test]
+    public Task Static_Extension_Discovery_Without_Mock_Of()
+    {
+        // IFoo.Mock() should trigger generation even without Mock.Of<IFoo>()
+        var source = """
+            using TUnit.Mocks;
+
+            public interface INotifier
+            {
+                void Notify(string message);
+                string GetStatus();
+            }
+
+            public class TestUsage
+            {
+                void M()
+                {
+                    var mock = INotifier.Mock();
+                }
+            }
+            """;
+
+        return VerifyGeneratorOutput(source);
+    }
 }

TUnit.Mocks.SourceGenerator.Tests/Snapshots/Interface_Inheriting_Multiple_Interfaces.verified.txt

@@ -1,6 +1,34 @@
 // <auto-generated/>
 #nullable enable
 
+namespace TUnit.Mocks.Generated
+{
+    public sealed class IReadWriter_Mock : global::TUnit.Mocks.Mock<global::IReadWriter>, global::IReadWriter
+    {
+        [global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
+        public IReadWriter_Mock(global::IReadWriter mockObject, global::TUnit.Mocks.MockEngine<global::IReadWriter> engine)
+            : base(mockObject, engine) { }
+
+        void global::IReadWriter.Flush()
+        {
+            Object.Flush();
+        }
+
+        string global::IReader.Read() => Object.Read();
+
+        void global::IWriter.Write(string data)
+        {
+            Object.Write(data);
+        }
+    }
+}
+
+
+// ===== FILE SEPARATOR =====
+
+// <auto-generated/>
+#nullable enable
+
 namespace TUnit.Mocks.Generated
 {
     internal static class IReadWriter_MockFactory
@@ -11,13 +39,13 @@ namespace TUnit.Mocks.Generated
             global::TUnit.Mocks.MockRegistry.RegisterFactory<global::IReadWriter>(Create);
         }
 
-        private static global::TUnit.Mocks.Mock<global::IReadWriter> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
+        internal static global::TUnit.Mocks.Mock<global::IReadWriter> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
         {
             if (constructorArgs.Length > 0) throw new global::System.ArgumentException($"Interface mock 'global::IReadWriter' does not support constructor arguments, but {constructorArgs.Length} were provided.");
             var engine = new global::TUnit.Mocks.MockEngine<global::IReadWriter>(behavior);
             var impl = new IReadWriter_MockImpl(engine);
             engine.Raisable = impl;
-            var mock = new global::TUnit.Mocks.Mock<global::IReadWriter>(impl, engine);
+            var mock = new IReadWriter_Mock(impl, engine);
             return mock;
         }
     }
@@ -174,6 +202,27 @@ namespace TUnit.Mocks.Generated
 }
 
 
+// ===== FILE SEPARATOR =====
+
+// <auto-generated/>
+#nullable enable
+
+namespace TUnit.Mocks
+{
+    public static class IReadWriter_MockStaticExtension
+    {
+        extension(global::IReadWriter)
+        {
+            [global::System.Runtime.CompilerServices.OverloadResolutionPriority(1)]
+            public static global::TUnit.Mocks.Generated.IReadWriter_Mock Mock(global::TUnit.Mocks.MockBehavior behavior = global::TUnit.Mocks.MockBehavior.Loose)
+            {
+                return (global::TUnit.Mocks.Generated.IReadWriter_Mock)global::TUnit.Mocks.Generated.IReadWriter_MockFactory.Create(behavior, []);
+            }
+        }
+    }
+}
+
+
 // ===== FILE SEPARATOR =====
 
 // <auto-generated/>

TUnit.Mocks.SourceGenerator.Tests/Snapshots/Interface_With_Async_Methods.verified.txt

@@ -1,6 +1,30 @@
 // <auto-generated/>
 #nullable enable
 
+namespace TUnit.Mocks.Generated
+{
+    public sealed class IAsyncService_Mock : global::TUnit.Mocks.Mock<global::IAsyncService>, global::IAsyncService
+    {
+        [global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
+        public IAsyncService_Mock(global::IAsyncService mockObject, global::TUnit.Mocks.MockEngine<global::IAsyncService> engine)
+            : base(mockObject, engine) { }
+
+        global::System.Threading.Tasks.Task<string> global::IAsyncService.GetValueAsync(string key) => Object.GetValueAsync(key);
+
+        global::System.Threading.Tasks.Task global::IAsyncService.DoWorkAsync() => Object.DoWorkAsync();
+
+        global::System.Threading.Tasks.ValueTask<int> global::IAsyncService.ComputeAsync(int input) => Object.ComputeAsync(input);
+
+        global::System.Threading.Tasks.ValueTask global::IAsyncService.InitializeAsync(global::System.Threading.CancellationToken ct) => Object.InitializeAsync(ct);
+    }
+}
+
+
+// ===== FILE SEPARATOR =====
+
+// <auto-generated/>
+#nullable enable
+
 namespace TUnit.Mocks.Generated
 {
     internal static class IAsyncService_MockFactory
@@ -11,13 +35,13 @@ namespace TUnit.Mocks.Generated
             global::TUnit.Mocks.MockRegistry.RegisterFactory<global::IAsyncService>(Create);
         }
 
-        private static global::TUnit.Mocks.Mock<global::IAsyncService> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
+        internal static global::TUnit.Mocks.Mock<global::IAsyncService> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
         {
             if (constructorArgs.Length > 0) throw new global::System.ArgumentException($"Interface mock 'global::IAsyncService' does not support constructor arguments, but {constructorArgs.Length} were provided.");
             var engine = new global::TUnit.Mocks.MockEngine<global::IAsyncService>(behavior);
             var impl = new IAsyncService_MockImpl(engine);
             engine.Raisable = impl;
-            var mock = new global::TUnit.Mocks.Mock<global::IAsyncService>(impl, engine);
+            var mock = new IAsyncService_Mock(impl, engine);
             return mock;
         }
     }
@@ -491,6 +515,27 @@ namespace TUnit.Mocks.Generated
 }
 
 
+// ===== FILE SEPARATOR =====
+
+// <auto-generated/>
+#nullable enable
+
+namespace TUnit.Mocks
+{
+    public static class IAsyncService_MockStaticExtension
+    {
+        extension(global::IAsyncService)
+        {
+            [global::System.Runtime.CompilerServices.OverloadResolutionPriority(1)]
+            public static global::TUnit.Mocks.Generated.IAsyncService_Mock Mock(global::TUnit.Mocks.MockBehavior behavior = global::TUnit.Mocks.MockBehavior.Loose)
+            {
+                return (global::TUnit.Mocks.Generated.IAsyncService_Mock)global::TUnit.Mocks.Generated.IAsyncService_MockFactory.Create(behavior, []);
+            }
+        }
+    }
+}
+
+
 // ===== FILE SEPARATOR =====
 
 // <auto-generated/>

TUnit.Mocks.SourceGenerator.Tests/Snapshots/Interface_With_Events.verified.txt

@@ -1,6 +1,29 @@
 // <auto-generated/>
 #nullable enable
 
+namespace TUnit.Mocks.Generated
+{
+    public sealed class INotifier_Mock : global::TUnit.Mocks.Mock<global::INotifier>, global::INotifier
+    {
+        [global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
+        public INotifier_Mock(global::INotifier mockObject, global::TUnit.Mocks.MockEngine<global::INotifier> engine)
+            : base(mockObject, engine) { }
+
+        void global::INotifier.Notify(string message)
+        {
+            Object.Notify(message);
+        }
+
+        event global::System.EventHandler<string> global::INotifier.ItemAdded { add => Object.ItemAdded += value; remove => Object.ItemAdded -= value; }
+    }
+}
+
+
+// ===== FILE SEPARATOR =====
+
+// <auto-generated/>
+#nullable enable
+
 namespace TUnit.Mocks.Generated
 {
     [global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
@@ -42,13 +65,13 @@ namespace TUnit.Mocks.Generated
             global::TUnit.Mocks.MockRegistry.RegisterFactory<global::INotifier>(Create);
         }
 
-        private static global::TUnit.Mocks.Mock<global::INotifier> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
+        internal static global::TUnit.Mocks.Mock<global::INotifier> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
         {
             if (constructorArgs.Length > 0) throw new global::System.ArgumentException($"Interface mock 'global::INotifier' does not support constructor arguments, but {constructorArgs.Length} were provided.");
             var engine = new global::TUnit.Mocks.MockEngine<global::INotifier>(behavior);
             var impl = new INotifier_MockImpl(engine);
             engine.Raisable = impl;
-            var mock = new global::TUnit.Mocks.Mock<global::INotifier>(impl, engine);
+            var mock = new INotifier_Mock(impl, engine);
             return mock;
         }
     }
@@ -212,6 +235,27 @@ namespace TUnit.Mocks.Generated
 }
 
 
+// ===== FILE SEPARATOR =====
+
+// <auto-generated/>
+#nullable enable
+
+namespace TUnit.Mocks
+{
+    public static class INotifier_MockStaticExtension
+    {
+        extension(global::INotifier)
+        {
+            [global::System.Runtime.CompilerServices.OverloadResolutionPriority(1)]
+            public static global::TUnit.Mocks.Generated.INotifier_Mock Mock(global::TUnit.Mocks.MockBehavior behavior = global::TUnit.Mocks.MockBehavior.Loose)
+            {
+                return (global::TUnit.Mocks.Generated.INotifier_Mock)global::TUnit.Mocks.Generated.INotifier_MockFactory.Create(behavior, []);
+            }
+        }
+    }
+}
+
+
 // ===== FILE SEPARATOR =====
 
 // <auto-generated/>

TUnit.Mocks.SourceGenerator.Tests/Snapshots/Interface_With_Generic_Methods.verified.txt

@@ -1,6 +1,31 @@
 // <auto-generated/>
 #nullable enable
 
+namespace TUnit.Mocks.Generated
+{
+    public sealed class IRepository_Mock : global::TUnit.Mocks.Mock<global::IRepository>, global::IRepository
+    {
+        [global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
+        public IRepository_Mock(global::IRepository mockObject, global::TUnit.Mocks.MockEngine<global::IRepository> engine)
+            : base(mockObject, engine) { }
+
+        T global::IRepository.GetById<T>(int id) where T : class => Object.GetById<T>(id);
+
+        void global::IRepository.Save<T>(T entity) where T : class, new()
+        {
+            Object.Save<T>(entity);
+        }
+
+        TResult global::IRepository.Transform<TInput, TResult>(TInput input) where TInput : notnull where TResult : struct => Object.Transform<TInput, TResult>(input);
+    }
+}
+
+
+// ===== FILE SEPARATOR =====
+
+// <auto-generated/>
+#nullable enable
+
 namespace TUnit.Mocks.Generated
 {
     internal static class IRepository_MockFactory
@@ -11,13 +36,13 @@ namespace TUnit.Mocks.Generated
             global::TUnit.Mocks.MockRegistry.RegisterFactory<global::IRepository>(Create);
         }
 
-        private static global::TUnit.Mocks.Mock<global::IRepository> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
+        internal static global::TUnit.Mocks.Mock<global::IRepository> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
         {
             if (constructorArgs.Length > 0) throw new global::System.ArgumentException($"Interface mock 'global::IRepository' does not support constructor arguments, but {constructorArgs.Length} were provided.");
             var engine = new global::TUnit.Mocks.MockEngine<global::IRepository>(behavior);
             var impl = new IRepository_MockImpl(engine);
             engine.Raisable = impl;
-            var mock = new global::TUnit.Mocks.Mock<global::IRepository>(impl, engine);
+            var mock = new IRepository_Mock(impl, engine);
             return mock;
         }
     }
@@ -118,6 +143,27 @@ namespace TUnit.Mocks.Generated
 }
 
 
+// ===== FILE SEPARATOR =====
+
+// <auto-generated/>
+#nullable enable
+
+namespace TUnit.Mocks
+{
+    public static class IRepository_MockStaticExtension
+    {
+        extension(global::IRepository)
+        {
+            [global::System.Runtime.CompilerServices.OverloadResolutionPriority(1)]
+            public static global::TUnit.Mocks.Generated.IRepository_Mock Mock(global::TUnit.Mocks.MockBehavior behavior = global::TUnit.Mocks.MockBehavior.Loose)
+            {
+                return (global::TUnit.Mocks.Generated.IRepository_Mock)global::TUnit.Mocks.Generated.IRepository_MockFactory.Create(behavior, []);
+            }
+        }
+    }
+}
+
+
 // ===== FILE SEPARATOR =====
 
 // <auto-generated/>

TUnit.Mocks.SourceGenerator.Tests/Snapshots/Interface_With_Inherited_Static_Abstract_Members.verified.txt

@@ -44,7 +44,7 @@ namespace TUnit.Mocks.Generated
             global::TUnit.Mocks.MockRegistry.RegisterFactory<global::TUnit.Mocks.Generated.IMyService_Mockable>(Create);
         }
 
-        private static global::TUnit.Mocks.Mock<global::TUnit.Mocks.Generated.IMyService_Mockable> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
+        internal static global::TUnit.Mocks.Mock<global::TUnit.Mocks.Generated.IMyService_Mockable> Create(global::TUnit.Mocks.MockBehavior behavior, object[] constructorArgs)
         {
             if (constructorArgs.Length > 0) throw new global::System.ArgumentException($"Interface mock 'global::TUnit.Mocks.Generated.IMyService_Mockable' does not support constructor arguments, but {constructorArgs.Length} were provided.");
             var engine = new global::TUnit.Mocks.MockEngine<global::TUnit.Mocks.Generated.IMyService_Mockable>(behavior);