Fix SYSLIB obsoletion warnings in tests (dotnet#51847)

* Fix SYSLIB obsoletion warnings in tests

* Simplify references to assembly location

src/tests/Common/dir.sdkbuild.props

@@ -10,7 +10,6 @@
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
     <EnableDefaultItems>false</EnableDefaultItems>
     <Platform>AnyCPU</Platform>
-    <NoWarn>$(NoWarn),618,SYSLIB0012</NoWarn>
 
     <!-- [ARCADE REMOVE] This line should be removed we use the Arcade Sdk. -->
     <DeterministicSourcePaths>false</DeterministicSourcePaths>

src/tests/Directory.Build.props

@@ -92,7 +92,7 @@
     <AddAdditionalExplicitAssemblyReferences>false</AddAdditionalExplicitAssemblyReferences>
     <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
     <!-- Disable some C# warnings for the tests. -->
-    <NoWarn>78,162,164,168,169,219,251,252,414,429,618,642,649,652,659,675,1691,1717,1718,3001,3002,3003,3005,3008,SYSLIB0004,SYSLIB0011,SYSLIB0012</NoWarn>
+    <NoWarn>78,162,164,168,169,219,251,252,414,429,618,642,649,652,659,675,1691,1717,1718,3001,3002,3003,3005,3008</NoWarn>
     <RunAnalyzers>false</RunAnalyzers>
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <SkipSigning Condition="'$(CrossGen)' == 'true'">true</SkipSigning>

src/tests/GC/Performance/Tests/LowLatencyTest.cs

@@ -108,7 +108,6 @@ public void DoTest(int count, GCLatencyMode gcMode)
         {
             GCLatencyMode oldMode = GCSettings.LatencyMode;
 
-            RuntimeHelpers.PrepareConstrainedRegions();
             try
             {
                 // Load Data

src/tests/GC/Stress/Framework/LoaderClass.cs

@@ -47,6 +47,8 @@ public void SuppressConsole()
         Console.SetOut(System.IO.TextWriter.Null);
     }
 
+#pragma warning disable SYSLIB0012 // Assembly.CodeBase is obsolete
+
     /// <summary>
     /// Executes a LoadFrom in the app domain LoaderClass has been loaded into.  Attempts to load a given assembly, looking in the
     /// given paths & the current directory.
@@ -122,6 +124,7 @@ public void LoadFrom(string path, string[] paths
             }
         }
     }
+#pragma warning restore SYSLIB0012
 
     /// <summary>
     /// Attempts to load an assembly w/ a simple name, looking in the given paths if a normal load fails

src/tests/Interop/COM/NETClients/Primitives/TestInALC.cs

@@ -10,7 +10,7 @@ class Test
     {
         static int Main(string[] args)
         {
-            string currentAssemblyDirectory = Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().CodeBase).AbsolutePath);
+            string currentAssemblyDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
             string testAssemblyFullPath = Path.Combine(currentAssemblyDirectory, "NETClientPrimitives.dll");
             return TestLibrary.Utilities.ExecuteAndUnload(testAssemblyFullPath, args);
         }

src/tests/Interop/ICustomMarshaler/ConflictingNames/RunInALC.cs

@@ -39,7 +39,7 @@ static void ConflictingCustomMarshalerNamesInNoncollectibleLoadContexts_Succeeds
 
     static void Run(AssemblyLoadContext context)
     {
-        string currentAssemblyDirectory = Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().CodeBase).AbsolutePath);
+        string currentAssemblyDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
         Assembly inContextAssembly = context.LoadFromAssemblyPath(Path.Combine(currentAssemblyDirectory, "CustomMarshaler.dll"));
         Type inContextType = inContextAssembly.GetType("CustomMarshalers.CustomMarshalerTest");
         object instance = Activator.CreateInstance(inContextType);
@@ -54,7 +54,7 @@ class UnloadableLoadContext : AssemblyLoadContext
     public UnloadableLoadContext()
         :base(true)
     {
-        
+
     }
 
     protected override Assembly Load(AssemblyName assemblyName)

src/tests/Interop/MarshalAPI/IUnknown/TestInALC.cs

@@ -10,7 +10,7 @@ class Test
     {
         static int Main(string[] args)
         {
-            string currentAssemblyDirectory = Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().CodeBase).AbsolutePath);
+            string currentAssemblyDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
             string testAssemblyFullPath = Path.Combine(currentAssemblyDirectory, "IUnknownTest.dll");
             return TestLibrary.Utilities.ExecuteAndUnload(testAssemblyFullPath, args);
         }

src/tests/Interop/PInvoke/NativeCallManagedComVisible/Default/TestInALC.cs

@@ -10,7 +10,7 @@ class Test
     {
         static int Main(string[] args)
         {
-            string currentAssemblyDirectory = Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().CodeBase).AbsolutePath);
+            string currentAssemblyDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
             string testAssemblyFullPath = Path.Combine(currentAssemblyDirectory, "DefaultTest.dll");
             return TestLibrary.Utilities.ExecuteAndUnload(testAssemblyFullPath, args);
         }

src/tests/JIT/Regression/JitBlue/GitHub_25468/GitHub_25468.csproj

@@ -5,6 +5,7 @@
   <PropertyGroup>
     <DebugType>None</DebugType>
     <Optimize>True</Optimize>
+    <EnableUnsafeBinaryFormatterSerialization>true</EnableUnsafeBinaryFormatterSerialization>
   </PropertyGroup>
   <ItemGroup>
     <Compile Include="$(MSBuildProjectName).cs" />

src/tests/Regressions/coreclr/GitHub_22888/test22888.cs

@@ -65,7 +65,7 @@ static bool LoadAndUnload(string assemblyPath, out WeakReference alcWeakRef)
 
     public static int Main()
     {
-        string currentAssemblyDirectory = Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().CodeBase).AbsolutePath);
+        string currentAssemblyDirectory = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
         string testAssemblyFullPath = Path.Combine(currentAssemblyDirectory, "test22888resources.dll");
 
         WeakReference alcWeakRef;

src/tests/baseservices/compilerservices/RuntimeHelpers/ExecuteCodeWithGuaranteedCleanup.cs

@@ -38,7 +38,9 @@ public static void Run()
         int val = 21;
         try
         {
+#pragma warning disable SYSLIB0004 // CER is obsolete
             RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(t, c, val);
+#pragma warning restore SYSLIB0004
         }
         catch (Exception Ex)
         {

src/tests/run.proj

@@ -188,7 +188,7 @@ namespace $([System.String]::Copy($(Category)).Replace(".","_").Replace("\","").
             static _Global()
             {
                 reportBase = System.Environment.GetEnvironmentVariable(%22XunitTestReportDirBase%22)%3B
-                testBinaryBase = System.IO.Path.GetDirectoryName(new Uri(Assembly.GetExecutingAssembly().CodeBase).LocalPath)%3B
+                testBinaryBase = System.IO.Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)%3B
                 coreRoot = System.Environment.GetEnvironmentVariable(%22CORE_ROOT%22)%3B
                 category = "$([System.String]::Copy($(Category)).Replace(".","_").Replace("\","").Replace("-","_"))"%3B