[wasm] Don't deploy the NetCoreAppMinimum BinaryFormatter copy on browser/wasi

[pavelsavara]

Summary

Test-infra only. Excludes the NetCoreAppMinimum private copy of System.Runtime.Serialization.Formatters from the app closure on browser/wasi, so those apps deploy the framework build instead.

Many test projects reference the NetCoreAppMinimum build of System.Runtime.Serialization.Formatters (Private="true", SetTargetFramework=$(NetCoreAppMinimum)) to get a functional BinaryFormatter. BinaryFormatter is unsupported on browser/wasi (PlatformDetection.IsBinaryFormatterSupported is false for IsBrowser), so those tests are already skipped there and the private copy serves no purpose.

On self-contained wasm the private copy is the only Formatters deployed (it shadows the framework build). In official builds it carries AssemblyVersion=10.0.0.0 (the NetCoreAppMinimum TFM), while the test IL is compiled against the current framework reference (Version=11.0.0.0). CoreCLR's strict assembly-version binding won't bind down, so un-gated serialization-infra tests fail at load, e.g.:

System.Tests.DateTimeTests.GetObjectData_Invoke_ReturnsExpected
System.IO.FileNotFoundException : Could not load file or assembly
'System.Runtime.Serialization.Formatters, Version=11.0.0.0, ...'

Mono passes only because its loader binds by simple name (version-agnostic).

Fix

Gate the private reference to non-wasm in all affected test projects:

<ProjectReference Include="...System.Runtime.Serialization.Formatters.csproj"
                  Private="true"
                  SetTargetFramework="TargetFramework=$(NetCoreAppMinimum)"
                  Condition="'$(TargetOS)' != 'browser' and '$(TargetOS)' != 'wasi'" />

On browser/wasi the framework net11.0 build is now deployed (AssemblyVersion=11.0.0.0), which satisfies the reference and keeps SerializationInfo/FormatterConverter functional; BinaryFormatter tests remain skipped as before. No behavioral change on other platforms.

Verification

Reproduced and validated locally on CoreCLR browser-wasm (V8):

• Before: the deployed System.Runtime.Serialization.Formatters.dll came from bin/System.Runtime.Serialization.Formatters/Release/net10.0/.
• After: it comes from the runtime pack bin/microsoft.netcore.app.runtime.browser-wasm/Release/runtimes/browser-wasm/lib/net11.0/ (framework build).
• System.Tests.DateTimeTests still passes (1372/1373; the 1 skip is a BinaryFormatter-gated test).

Note

This PR description was generated with the assistance of GitHub Copilot.

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Pull request overview

Updates multiple library test project files to avoid deploying the NetCoreAppMinimum private copy of System.Runtime.Serialization.Formatters on browser/wasi, so those targets rely on the framework-provided assembly instead. This is a test-infra change scoped to .csproj references and is intended to prevent version-shadowing issues specific to WebAssembly deployments.

Changes:

• Adds Condition="'$(TargetOS)' != 'browser' and '$(TargetOS)' != 'wasi'" to the System.Runtime.Serialization.Formatters ProjectReference used for NetCoreAppMinimum/BinaryFormatter scenarios.
• Applies the same gating consistently across the affected test projects that were privately copying the NetCoreAppMinimum Formatters build.

Reviewed changes

Copilot reviewed 24 out of 24 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/libraries/System.Threading.Channels/tests/System.Threading.Channels.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Text.RegularExpressions/tests/FunctionalTests/System.Text.RegularExpressions.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Security.Cryptography/tests/System.Security.Cryptography.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Runtime/tests/System.Runtime.Tests/System.Runtime.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Runtime/tests/System.Resources.ResourceManager.Tests/System.Resources.ResourceManager.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Runtime.Serialization.Primitives/tests/System.Runtime.Serialization.Primitives.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Runtime.Serialization.Formatters/tests/System.Runtime.Serialization.Formatters.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Resources.Extensions/tests/System.Resources.Extensions.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Resources.Extensions/tests/CompatTests/System.Resources.Extensions.Compat.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Resources.Extensions/tests/BinaryFormatTests/System.Resources.Extensions.BinaryFormat.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Reflection.Metadata/tests/System.Reflection.Metadata.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.ObjectModel/tests/System.ObjectModel.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Net.Security/tests/FunctionalTests/System.Net.Security.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Net.Requests/tests/System.Net.Requests.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Formats.Nrbf/tests/System.Formats.Nrbf.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Data.Common/tests/System.Data.Common.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Configuration.ConfigurationManager/tests/System.Configuration.ConfigurationManager.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.ComponentModel.TypeConverter/tests/System.ComponentModel.TypeConverter.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.ComponentModel.Primitives/tests/System.ComponentModel.Primitives.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.ComponentModel.Annotations/tests/System.ComponentModel.Annotations.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Collections/tests/System.Collections.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Collections.Specialized/tests/System.Collections.Specialized.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/System.Collections.NonGeneric/tests/System.Collections.NonGeneric.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.
src/libraries/Microsoft.Extensions.Hosting/tests/UnitTests/Microsoft.Extensions.Hosting.Unit.Tests.csproj	Gates the NetCoreAppMinimum private Formatters copy off for browser/wasi.

[akoeplinger]

I'm not sure this is correct. CoreCLR on mobile and NativeAOT also doesn't have binaryformatter and it doesn't run into this issue. We should be able to load the 10.0 version of the assembly the same way.