Prevent background process from crashing test when writing to… (#20254)

Author: John Luo

src/Grpc/Grpc.sln

@@ -13,6 +13,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "InteropWebsite", "test\test
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "InteropClient", "test\testassets\InteropClient\InteropClient.csproj", "{66E6C55E-E4E3-4F4B-834A-BB34BFE00D2F}"
 EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "dependencies", "dependencies", "{285E2F1E-E0F9-47ED-BE43-6D84B9A49DA0}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.AspNetCore.Testing", "..\Testing\src\Microsoft.AspNetCore.Testing.csproj", "{3B2B746A-F12E-4E04-9782-6E12F855B50D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -31,6 +35,10 @@ Global
 		{66E6C55E-E4E3-4F4B-834A-BB34BFE00D2F}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{66E6C55E-E4E3-4F4B-834A-BB34BFE00D2F}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{66E6C55E-E4E3-4F4B-834A-BB34BFE00D2F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3B2B746A-F12E-4E04-9782-6E12F855B50D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3B2B746A-F12E-4E04-9782-6E12F855B50D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3B2B746A-F12E-4E04-9782-6E12F855B50D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3B2B746A-F12E-4E04-9782-6E12F855B50D}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -39,6 +47,7 @@ Global
 		{90BF37E6-B3F1-4EFC-A233-8288D8B32DD2} = {0FFB3605-0203-450F-80C8-F82CA2E8269F}
 		{3AB7E8E4-BA36-44CE-844E-39DB66E46D45} = {F5841B0A-901A-448F-9CC5-4CB393CE86AF}
 		{66E6C55E-E4E3-4F4B-834A-BB34BFE00D2F} = {F5841B0A-901A-448F-9CC5-4CB393CE86AF}
+		{3B2B746A-F12E-4E04-9782-6E12F855B50D} = {285E2F1E-E0F9-47ED-BE43-6D84B9A49DA0}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {3CAE66FD-9A59-49C2-B133-1D599225259A}

src/Grpc/test/InteropTests/Helpers/InteropTestsFixture.cs

@@ -14,38 +14,34 @@
 
 namespace InteropTests
 {
-    public class InteropTests : IClassFixture<InteropTestsFixture>
+    public class InteropTests
     {
         private static readonly TimeSpan DefaultTimeout = TimeSpan.FromSeconds(30);
-
         private readonly string _clientPath = Path.Combine(Directory.GetCurrentDirectory(), "InteropClient", "InteropClient.dll");
-        private readonly InteropTestsFixture _fixture;
+        private readonly string _serverPath = Path.Combine(Directory.GetCurrentDirectory(), "InteropWebsite", "InteropWebsite.dll");
         private readonly ITestOutputHelper _output;
 
-        public InteropTests(InteropTestsFixture fixture, ITestOutputHelper output)
+        public InteropTests(ITestOutputHelper output)
         {
-            var attributes = Assembly.GetExecutingAssembly()
-                .GetCustomAttributes<AssemblyMetadataAttribute>();
-
-            fixture.Path = Path.Combine(Directory.GetCurrentDirectory(), "InteropWebsite", "InteropWebsite.dll");
-
-            _fixture = fixture;
             _output = output;
         }
 
         [Theory]
         [MemberData(nameof(TestCaseData))]
         public async Task InteropTestCase(string name)
         {
-            await _fixture.EnsureStarted(_output).TimeoutAfter(DefaultTimeout);
-
-            using (var clientProcess = new ClientProcess(_output, _clientPath, _fixture.ServerPort, name))
+            using (var serverProcess = new WebsiteProcess(_serverPath, _output))
             {
-                await clientProcess.WaitForReady().TimeoutAfter(DefaultTimeout);
+                await serverProcess.WaitForReady().TimeoutAfter(DefaultTimeout);
+
+                using (var clientProcess = new ClientProcess(_output, _clientPath, serverProcess.ServerPort, name))
+                {
+                    await clientProcess.WaitForReady().TimeoutAfter(DefaultTimeout);
 
-                await clientProcess.Exited.TimeoutAfter(DefaultTimeout);
+                    await clientProcess.Exited.TimeoutAfter(DefaultTimeout);
 
-                Assert.Equal(0, clientProcess.ExitCode);
+                    Assert.Equal(0, clientProcess.ExitCode);
+                }
             }
         }
 

src/Grpc/test/InteropTests/InteropTests.cs

@@ -152,7 +152,7 @@ private async Task<IChannelWrapper> HttpClientCreateChannel()
             }
 
             var httpClientHandler = new HttpClientHandler();
-            httpClientHandler.ServerCertificateCustomValidationCallback = HttpClientHandler.DangerousAcceptAnyServerCertificateValidator;
+            httpClientHandler.ServerCertificateCustomValidationCallback = HttpClientHandler.DangerousAcceptAnyServerCertificateValidator!;
 
             if (options.UseTestCa ?? false)
             {