Skip UserCanSpecifyCustomBuildConfiguration on .NET Framework, see #2376

Author: AndreyAkinshin

tests/BenchmarkDotNet.IntegrationTests/CustomBuildConfigurationTests.cs

@@ -4,7 +4,10 @@
 using BenchmarkDotNet.Extensions;
 using BenchmarkDotNet.Jobs;
 using BenchmarkDotNet.Portability;
+using BenchmarkDotNet.Tests.XUnit;
+#if !DEBUG
 using Xunit;
+#endif
 using Xunit.Abstractions;
 
 namespace BenchmarkDotNet.IntegrationTests
@@ -15,7 +18,7 @@ public CustomBuildConfigurationTests(ITestOutputHelper output) : base(output)
         {
         }
 
-        [Fact]
+        [FactEnvSpecific("Flaky, see https://github.com/dotnet/BenchmarkDotNet/issues/2376", EnvRequirement.NonFullFramework)]
         public void UserCanSpecifyCustomBuildConfiguration()
         {
             var jobWithCustomConfiguration = Job.Dry.WithCustomBuildConfiguration("CUSTOM");

tests/BenchmarkDotNet.Tests/XUnit/EnvRequirement.cs

@@ -6,6 +6,7 @@ public enum EnvRequirement
     NonWindows,
     NonLinux,
     FullFrameworkOnly,
+    NonFullFramework,
     DotNetCoreOnly,
     DotNetCore30Only
 }

tests/BenchmarkDotNet.Tests/XUnit/EnvRequirementChecker.cs

@@ -19,6 +19,7 @@ public static class EnvRequirementChecker
         EnvRequirement.NonWindows => !RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? null : "Non-Windows test",
         EnvRequirement.NonLinux => !RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ? null : "Non-Linux test",
         EnvRequirement.FullFrameworkOnly => BdnRuntimeInformation.IsFullFramework ? null : "Full .NET Framework-only test",
+        EnvRequirement.NonFullFramework => !BdnRuntimeInformation.IsFullFramework ? null : "Non-Full .NET Framework test",
         EnvRequirement.DotNetCoreOnly => BdnRuntimeInformation.IsNetCore ? null : ".NET/.NET Core-only test",
         EnvRequirement.DotNetCore30Only => IsRuntime(RuntimeMoniker.NetCoreApp30) ? null : ".NET Core 3.0-only test",
         _ => throw new ArgumentOutOfRangeException(nameof(requirement), requirement, "Unknown value")