diff --git a/GFramework.Core.Tests/Packaging/TransitiveGlobalUsingsPackagingTests.cs b/GFramework.Core.Tests/Packaging/TransitiveGlobalUsingsPackagingTests.cs
index 2ca6a9c..78bda4b 100644
--- a/GFramework.Core.Tests/Packaging/TransitiveGlobalUsingsPackagingTests.cs
+++ b/GFramework.Core.Tests/Packaging/TransitiveGlobalUsingsPackagingTests.cs
@@ -1,4 +1,7 @@
 using System.IO;
+using System.Runtime.CompilerServices;
+using GFramework.Core.Architectures;
+using GFramework.Core.Coroutine.Extensions;
 
 namespace GFramework.Core.Tests.Packaging;
 
@@ -9,6 +12,27 @@ namespace GFramework.Core.Tests.Packaging;
 [TestFixture]
 public class TransitiveGlobalUsingsPackagingTests
 {
+    /// <summary>
+    ///     使用真实类型派生架构命名空间，避免测试断言和命名空间重构脱节。
+    /// </summary>
+    private static readonly string ArchitectureNamespace = typeof(Architecture).Namespace
+                                                           ?? throw new InvalidOperationException(
+                                                               "Architecture namespace should not be null.");
+
+    /// <summary>
+    ///     使用真实类型派生扩展命名空间，避免对字面量命名空间字符串的重复维护。
+    /// </summary>
+    private static readonly string ExtensionsNamespace = typeof(ContextAwareEnvironmentExtensions).Namespace
+                                                         ?? throw new InvalidOperationException(
+                                                             "Extensions namespace should not be null.");
+
+    /// <summary>
+    ///     使用真实类型派生协程扩展命名空间，确保断言和源码自动发现保持一致。
+    /// </summary>
+    private static readonly string CoroutineExtensionsNamespace = typeof(CoroutineExtensions).Namespace
+                                                                  ?? throw new InvalidOperationException(
+                                                                      "Coroutine extensions namespace should not be null.");
+
     /// <summary>
     ///     验证 GFramework.Core 在构建后会生成 transitive global usings props，
     ///     且 props 内容来自源码自动发现，并保留消费者侧排除机制。
@@ -16,7 +40,7 @@ public class TransitiveGlobalUsingsPackagingTests
     [Test]
     public void CoreBuild_Should_Generate_AutoDiscovered_TransitiveGlobalUsingsProps()
     {
-        var repositoryRoot = FindRepositoryRoot();
+        var repositoryRoot = ResolveRepositoryRoot();
         var propsPath = Path.Combine(
             repositoryRoot,
             "GFramework.Core",
@@ -27,30 +51,30 @@ public class TransitiveGlobalUsingsPackagingTests
         Assert.That(File.Exists(propsPath), Is.True, $"Expected generated props to exist: {propsPath}");
         var propsContent = File.ReadAllText(propsPath);
 
-        Assert.That(propsContent, Does.Contain("GFramework.Core.Extensions"));
-        Assert.That(propsContent, Does.Contain("GFramework.Core.Architectures"));
-        Assert.That(propsContent, Does.Contain("GFramework.Core.Coroutine.Extensions"));
+        Assert.That(propsContent, Does.Contain(ExtensionsNamespace));
+        Assert.That(propsContent, Does.Contain(ArchitectureNamespace));
+        Assert.That(propsContent, Does.Contain(CoroutineExtensionsNamespace));
         Assert.That(propsContent, Does.Contain("Remove=\"@(GFrameworkExcludedUsing)\""));
         Assert.That(propsContent, Does.Not.Contain("System.Runtime.CompilerServices"));
     }
 
     /// <summary>
-    ///     从测试输出目录向上回溯，定位包含解决方案文件的仓库根目录。
+    ///     基于当前测试源文件的已知位置解析仓库根目录。
+    ///     这里不扫描解决方案文件，避免测试对仓库布局演进产生额外脆弱性。
     /// </summary>
+    /// <param name="sourceFilePath">由编译器注入的当前测试源文件绝对路径。</param>
     /// <returns>仓库根目录绝对路径。</returns>
-    private static string FindRepositoryRoot()
+    private static string ResolveRepositoryRoot([CallerFilePath] string sourceFilePath = "")
     {
-        var currentDirectory = new DirectoryInfo(TestContext.CurrentContext.TestDirectory);
-
-        while (currentDirectory != null)
+        if (string.IsNullOrWhiteSpace(sourceFilePath))
         {
-            var solutionPath = Path.Combine(currentDirectory.FullName, "GFramework.sln");
-            if (File.Exists(solutionPath))
-                return currentDirectory.FullName;
-
-            currentDirectory = currentDirectory.Parent;
+            throw new InvalidOperationException("Caller file path is required to resolve the repository root.");
         }
 
-        throw new DirectoryNotFoundException("Could not locate the repository root for GFramework.");
+        var sourceDirectory = Path.GetDirectoryName(sourceFilePath)
+                              ?? throw new DirectoryNotFoundException(
+                                  $"Could not determine the directory for source file path: {sourceFilePath}");
+
+        return Path.GetFullPath(Path.Combine(sourceDirectory, "..", ".."));
     }
 }
\ No newline at end of file