Fix an incorrect root when a project references a shared project.

src/MagicOnion.GeneratorCore/Utils/PseudoCompilation.cs

@@ -305,7 +305,7 @@ private static void CollectDocument(string csproj, HashSet<string> source, List<
                 {
                     var sharedRoot = Path.GetDirectoryName(Path.Combine(csProjRoot, item.Attribute("Project").Value));
                     logger.Trace($"[{nameof(PseudoCompilation)}] Import project '{sharedRoot}'");
-                    foreach (var file in IterateCsFileWithoutBinObj(Path.GetDirectoryName(sharedRoot)))
+                    foreach (var file in IterateCsFileWithoutBinObj(sharedRoot))
                     {
                         source.Add(file);
                     }

tests/MagicOnion.Generator.Tests/GenerateTest.cs

@@ -367,4 +367,70 @@ public interface IMyService : IService<IMyService>
         // Assert
         sourceProjectCompilation.GetDiagnostics().Should().Contain(x => x.Severity == DiagnosticSeverity.Error); // the compilation should have some errors.
     }
+
+    [Fact]
+    public async Task SharedProject()
+    {
+        var options = TemporaryProjectWorkareaOptions.Default with
+        {
+            AdditionalCsProjectContent = @"
+                  <Import Project=""..\Shared\SubDir\MyShared.projitems"" Label=""Shared"" />
+                ",
+        };
+        using var tempWorkspace = TemporaryProjectWorkarea.Create(options);
+        var sharedDir = Path.GetFullPath(Path.Combine(tempWorkspace.ProjectDirectory, "..", "Shared", "SubDir"));
+        Directory.CreateDirectory(sharedDir);
+        // <tempdir>/Shared/SubDir/MyShared.projeitems
+        File.WriteAllText(Path.Combine(sharedDir, "MyShared.projeitems"), "<Project></Project>");
+        // <tempdir>/Shared/SubDir/IMyService.cs
+        File.WriteAllText(Path.Combine(sharedDir, "IMyService.cs"), """
+            using System;
+            using System.Threading.Tasks;
+            using MessagePack;
+            using MagicOnion;
+
+            namespace TempProject
+            {
+                public interface IMyService : IService<IMyService>
+                {
+                    UnaryResult<int> A();
+                }
+            }
+        """);
+        // <tempdir>/Shared/IYetAnotherMyService.cs (This file should be ignored.)
+        File.WriteAllText(Path.Combine(Path.GetDirectoryName(sharedDir), "IYetAnotherMyService.cs"), """
+            using System;
+            using System.Threading.Tasks;
+            using MessagePack;
+            using MagicOnion;
+
+            namespace TempProject
+            {
+                public interface IYetAnotherMyService : IService<IYetAnotherMyService>
+                {
+                    UnaryResult<int> A();
+                }
+            }
+        """);
+
+        var compiler = new MagicOnionCompiler(new MagicOnionGeneratorTestOutputLogger(testOutputHelper), CancellationToken.None);
+        await compiler.GenerateFileAsync(
+            tempWorkspace.CsProjectPath,
+            Path.Combine(tempWorkspace.OutputDirectory, "Generated.cs"),
+            true,
+            "TempProject.Generated",
+            "",
+            "MessagePack.Formatters",
+            SerializerType.MessagePack
+        );
+
+        // NOTE: GetOutputCompilation only refers under the ProjectDirectory and OutputDirectory.
+        Directory.Move(sharedDir, Path.Combine(tempWorkspace.ProjectDirectory, "Shared"));
+
+        var outputCompilation = tempWorkspace.GetOutputCompilation();
+        outputCompilation.GetCompilationErrors().Should().BeEmpty();
+
+        var symbols = outputCompilation.GetNamedTypeSymbolsFromGenerated();
+        symbols.Should().NotContain(x => x.Name.Contains("YetAnotherMyService"));
+    }
 }