.NET 8 defaults Process.Start to UseShellExecute=false, so handing it the
temp DXF tried to run the file as an executable and threw an unhandled
Win32Exception that took the app down. Open it through the shell so the
.dxf association is used, report write/launch failures in a message box,
and replace characters a file name cannot hold in the nest name.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Ten desktop test classes drew the same squares and the same 4 x 2
rectangle in private helpers, in two equivalent styles. They now use
TestPrograms.Square, ClockwiseSquare and Rectangle.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
TestAssemblySetup set the unhandled-exception mode and a ThreadException
handler from a module initializer. WinForms stores both per thread
(ThreadContext/NativeWindow thread statics), so they applied only to the
runner thread that loaded the assembly, never to the STA threads the
tests run on. There, an exception escaping a window message or a
BeginInvoke/SynchronizationContext callback still opened a modal
ThreadExceptionDialog in an interactive session, or was silently ignored
otherwise; the handler would also have logged and swallowed it.
Replace the fifteen copied RunSta helpers with StaTestThread.Run, which
selects UnhandledExceptionMode.ThrowException on each STA thread before
it creates a window, so the exception propagates to the test body and
fails the test. Each class keeps its own timeout and message; all
threads are now background threads. Remove TestAssemblySetup.
StaTestThreadTests covers a throwing BeginInvoke callback through
StaTestThread (fails with the original exception) and, as a control,
the default mode on a plain STA thread (the exception goes to the
thread's handler and never reaches the test body). Cross-compiled on
Linux; Windows execution is the windows-desktop CI job.
ajandClaude Opus 5.5