The BAML tests were orphaned: in no solution, no CI, and missing their
ICSharpCode.BamlDecompiler reference. Revive them split by platform,
mirroring ILSpy.Tests / ILSpy.Tests.Windows: ILSpy.BamlDecompiler.Tests
(net11.0) holds platform-agnostic tests - including a regression test that
decompiles with the WPF assemblies hidden, covering the missing-assembly
fix - and ILSpy.BamlDecompiler.Tests.Windows (net11.0-windows) holds the
WPF round-trip cases that compile XAML into BAML. Single-TFM projects keep
normal lock files; the Windows one declares all RIDs so its lock is
generatable and verifiable on any host.
Wire the cross-platform project into ILSpy.sln, ILSpy.XPlat.slnf and
ILSpy.Desktop.slnf so it builds and runs on the Linux/macOS legs; the
Windows project stays in ILSpy.sln (its tests execute in the Windows leg).
The Windows job also archives that assembly, whose embedded BAML lets the
decompiler be exercised against real BAML on a host without WPF.
Assisted-by: Claude:claude-opus-4-8:Claude Code
Siegfried Pammer
Peter Crabtree