Fix test

Author: dsplaisted

src/Tests/Microsoft.NET.Sdk.BlazorWebAssembly.AoT.Tests/WasmAoTPublishIntegrationTest.cs

@@ -73,9 +73,11 @@ public void AoT_Publish_WithExistingWebConfig_Works()
 
             var publishDirectory = publishCommand.GetOutputDirectory(DefaultTfm, "Release");
 
+            var webConfig = new BuildCommand(testInstance, "blazorwasm").GetOutputDirectory(configuration: "Release").File("web.config");
+
             // Verify web.config
-            new FileInfo(Path.Combine(publishDirectory.ToString(), "..", "web.config")).Should().Exist();
-            new FileInfo(Path.Combine(publishDirectory.ToString(), "..", "web.config")).Should().Contain(webConfigContents);
+            webConfig.Should().Exist();
+            webConfig.Should().Contain(webConfigContents);
         }
 
         [RequiresMSBuildVersionFact("17.0.0")]

src/Tests/Microsoft.NET.TestFramework/TestCommandLine.cs

@@ -13,7 +13,7 @@ public class TestCommandLine
     {
         public List<string> RemainingArgs { get; private set; }
 
-        public bool UseFullFrameworkMSBuild { get; private set; }
+        public bool UseFullFrameworkMSBuild { get; private set; } = true;
 
         public string FullFrameworkMSBuildPath { get; private set; }