Fix AppDomain creation utility to apply binding redirects in the created domain.

src/Compilers/Core/CodeAnalysisTest/AnalyzerFileReferenceTests.cs

@@ -180,6 +180,7 @@ public void TestLoadErrors3()
         public void TestAnalyzerLoading()
         {
             var dir = Temp.CreateDirectory();
+            dir.CopyFile(typeof(AppDomainUtils).Assembly.Location);
             var test = dir.CopyFile(typeof(FromFileLoader).Assembly.Location);
             var analyzerFile = TestHelpers.CreateCSharpAnalyzerAssemblyWithTestAnalyzer(dir, "MyAnalyzer");
             var loadDomain = AppDomainUtils.Create("AnalyzerTestDomain", basePath: dir.Path);
@@ -216,12 +217,12 @@ public class TestAnalyzer : DiagnosticAnalyzer
 
             var dir = Temp.CreateDirectory();
 
-            var metadata = dir.CopyFile(typeof(System.Reflection.Metadata.MetadataReader).Assembly.Location);
+            dir.CopyFile(typeof(System.Reflection.Metadata.MetadataReader).Assembly.Location);
+            dir.CopyFile(typeof(AppDomainUtils).Assembly.Location);
             var immutable = dir.CopyFile(typeof(ImmutableArray).Assembly.Location);
             var analyzer = dir.CopyFile(typeof(DiagnosticAnalyzer).Assembly.Location);
             var test = dir.CopyFile(typeof(FromFileLoader).Assembly.Location);
-            var filesystem = dir.CreateFile("System.IO.FileSystem.dll").WriteAllBytes(
-                TestResources.NetFX.v4_6_1038_0.Facades.System_IO_FileSystem);
+            dir.CopyFile(Path.Combine(Path.GetDirectoryName(typeof(CSharp.CSharpCompilation).Assembly.Location), "System.IO.FileSystem.dll"));
 
             var analyzerCompilation = CSharp.CSharpCompilation.Create(
                 "MyAnalyzer",

src/Test/Utilities/Desktop/AppDomainUtils.cs

@@ -25,12 +25,11 @@ public static AppDomain Create(string name = null, string basePath = null)
                 }
             }
 
-            return AppDomain.CreateDomain(
-                name,
-                null,
-                appBasePath: basePath,
-                appRelativeSearchPath: null,
-                shadowCopyFiles: false);
+            return AppDomain.CreateDomain(name, null, new AppDomainSetup()
+            {
+                ConfigurationFile = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile,
+                ApplicationBase = basePath
+            });
         }
 
         /// <summary>

src/Test/Utilities/Desktop/TestHelpers.cs

@@ -110,11 +110,10 @@ public class TestAnalyzer : DiagnosticAnalyzer
     public override void Initialize(AnalysisContext context) { throw new NotImplementedException(); }
 }";
 
-            var metadata = dir.CopyFile(typeof(System.Reflection.Metadata.MetadataReader).Assembly.Location);
+            dir.CopyFile(typeof(System.Reflection.Metadata.MetadataReader).Assembly.Location);
             var immutable = dir.CopyFile(typeof(ImmutableArray).Assembly.Location);
             var analyzer = dir.CopyFile(typeof(DiagnosticAnalyzer).Assembly.Location);
-            var filesystem = dir.CreateFile("System.IO.FileSystem.dll").WriteAllBytes(
-                TestResources.NetFX.v4_6_1038_0.Facades.System_IO_FileSystem);
+            dir.CopyFile(Path.Combine(Path.GetDirectoryName(typeof(CSharpCompilation).Assembly.Location), "System.IO.FileSystem.dll"));
 
             var analyzerCompilation = CSharpCompilation.Create(
                 assemblyName,