Update templates to use file-scoped namespaces.

global.json

@@ -3,12 +3,12 @@
     "vs": {
       "version": "15.9"
     },
-    "dotnet": "6.0.100-preview.4.21255.9"
+    "dotnet": "6.0.100-preview.7.21364.30"
   },
   "msbuild-sdks": {
     "Microsoft.DotNet.Arcade.Sdk": "6.0.0-beta.21357.3"
   },
   "sdk": {
-    "version": "6.0.100-preview.4.21255.9"
+    "version": "6.0.100-preview.7.21364.30"
   }
 }

template_feed/Microsoft.DotNet.Test.ProjectTemplates.6.0/content/MSTest-CSharp/UnitTest1.cs

@@ -1,13 +1,12 @@
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
-namespace Company.TestProject1
+namespace Company.TestProject1;
+
+[TestClass]
+public class UnitTest1
 {
-    [TestClass]
-    public class UnitTest1
+    [TestMethod]
+    public void TestMethod1()
     {
-        [TestMethod]
-        public void TestMethod1()
-        {
-        }
     }
 }

template_feed/Microsoft.DotNet.Test.ProjectTemplates.6.0/content/NUnit-CSharp/UnitTest1.cs

@@ -1,18 +1,17 @@
 using NUnit.Framework;
 
-namespace Company.TestProject1
+namespace Company.TestProject1;
+
+public class Tests
 {
-    public class Tests
+    [SetUp]
+    public void Setup()
     {
-        [SetUp]
-        public void Setup()
-        {
-        }
+    }
 
-        [Test]
-        public void Test1()
-        {
-            Assert.Pass();
-        }
+    [Test]
+    public void Test1()
+    {
+        Assert.Pass();
     }
 }

template_feed/Microsoft.DotNet.Test.ProjectTemplates.6.0/content/XUnit-CSharp/UnitTest1.cs

@@ -1,13 +1,12 @@
 using Xunit;
 
-namespace Company.TestProject1
+namespace Company.TestProject1;
+
+public class UnitTest1
 {
-    public class UnitTest1
+    [Fact]
+    public void Test1()
     {
-        [Fact]
-        public void Test1()
-        {
 
-        }
     }
 }

test/Microsoft.TestTemplates.Acceptance.Tests/Microsoft.TestTemplates.Acceptance.Tests.csproj

@@ -4,6 +4,10 @@
     <TargetFramework>net6.0</TargetFramework>
     <IsTestProject>true</IsTestProject>
     <IsPackable>false</IsPackable>
+    <LangVersion>preview</LangVersion>
+    <NoWarn>$(NoWarn);CS0105</NoWarn>
+
+    <GenerateProgramFile>false</GenerateProgramFile>
   </PropertyGroup>
 
   <ItemGroup>

test/Microsoft.TestTemplates.Acceptance.Tests/Program.cs

@@ -0,0 +1,2 @@
+[Microsoft.VisualStudio.TestPlatform.TestSDKAutoGeneratedCode]
+class AutoGeneratedProgram {static void Main(string[] args){}}