feat: enable [R3Command] source generator

MvvmAIO.R3.SourceGenerators.Tests/R3CommandGeneratorTests.cs

@@ -29,6 +29,108 @@ private void Save()
         return Verifier.Verify(GeneratorTestHarness.ToSnapshot(output));
     }
 
+    [Fact]
+    public void Generates_command_property_for_void_method_with_parameter()
+    {
+        const string source = """
+            namespace Demo;
+
+            public partial class ShellViewModel
+            {
+                [MvvmAIO.R3.R3Command]
+                private void Delete(int id)
+                {
+                }
+            }
+            """;
+
+        GeneratorRunOutput output = GeneratorTestHarness.Run(
+            source,
+            generators: new IIncrementalGenerator[] { new R3CommandGenerator() });
+        string snapshot = GeneratorTestHarness.ToSnapshot(output);
+
+        Assert.Contains("ReactiveCommand<int>", snapshot);
+        Assert.Contains("DeleteCommand", snapshot);
+        Assert.DoesNotContain("R3SG", snapshot.Split("Generated Sources:")[0]);
+    }
+
+    [Fact]
+    public void Generates_command_property_for_async_task_method()
+    {
+        const string source = """
+            namespace Demo;
+
+            public partial class ShellViewModel
+            {
+                [MvvmAIO.R3.R3Command]
+                private System.Threading.Tasks.Task SaveAsync()
+                {
+                    return System.Threading.Tasks.Task.CompletedTask;
+                }
+            }
+            """;
+
+        GeneratorRunOutput output = GeneratorTestHarness.Run(
+            source,
+            generators: new IIncrementalGenerator[] { new R3CommandGenerator() });
+        string snapshot = GeneratorTestHarness.ToSnapshot(output);
+
+        Assert.Contains("ReactiveCommand", snapshot);
+        Assert.Contains("SaveAsyncCommand", snapshot);
+        Assert.Contains("ValueTask", snapshot);
+        Assert.DoesNotContain("R3SG", snapshot.Split("Generated Sources:")[0]);
+    }
+
+    [Fact]
+    public void Generates_command_property_for_async_task_of_T_method()
+    {
+        const string source = """
+            namespace Demo;
+
+            public partial class ShellViewModel
+            {
+                [MvvmAIO.R3.R3Command]
+                private System.Threading.Tasks.Task<string> FetchData(int pageIndex)
+                {
+                    return System.Threading.Tasks.Task.FromResult("data");
+                }
+            }
+            """;
+
+        GeneratorRunOutput output = GeneratorTestHarness.Run(
+            source,
+            generators: new IIncrementalGenerator[] { new R3CommandGenerator() });
+        string snapshot = GeneratorTestHarness.ToSnapshot(output);
+
+        Assert.Contains("ReactiveCommand<int, string>", snapshot);
+        Assert.Contains("FetchDataCommand", snapshot);
+        Assert.DoesNotContain("R3SG", snapshot.Split("Generated Sources:")[0]);
+    }
+
+    [Fact]
+    public void Supports_custom_command_name()
+    {
+        const string source = """
+            namespace Demo;
+
+            public partial class ShellViewModel
+            {
+                [MvvmAIO.R3.R3Command(CommandName = "Submit")]
+                private void Save()
+                {
+                }
+            }
+            """;
+
+        GeneratorRunOutput output = GeneratorTestHarness.Run(
+            source,
+            generators: new IIncrementalGenerator[] { new R3CommandGenerator() });
+        string snapshot = GeneratorTestHarness.ToSnapshot(output);
+
+        Assert.Contains("Submit", snapshot);
+        Assert.DoesNotContain("SaveCommand", snapshot);
+    }
+
     [Fact]
     public Task Reports_diagnostic_when_containing_type_is_not_partial()
     {

MvvmAIO.R3.SourceGenerators/R3CommandGenerator.cs

@@ -12,7 +12,7 @@
 
 namespace MvvmAIO.R3.SourceGenerators;
 
-// [Generator(LanguageNames.CSharp)]
+[Generator(LanguageNames.CSharp)]
 public sealed class R3CommandGenerator : IIncrementalGenerator
 {
     private const string AttributeMetadataName = "MvvmAIO.R3.R3CommandAttribute";