Fix macOS CI tests: add no-sandbox and in-process-gpu switches

Child processes (GPU, renderer, network service) crash on macOS CI
runners with "No rendezvous client" because the macOS sandbox blocks
bootstrap_look_up for the Mach port rendezvous server. Add no-sandbox,
in-process-gpu, and disable-gpu{,-compositing} for MAC, mirroring the
existing LINUX block.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: linesight

unittests/main_test.py

@@ -158,6 +158,13 @@ def test_main(self):
             # OnContextInitialized from firing and browser creation fails.
             switches["in-process-gpu"] = ""
             switches["no-zygote"] = ""
+        if MAC:
+            # Mach port rendezvous (IPC) fails for child processes on CI
+            # runners because the macOS sandbox blocks bootstrap_look_up.
+            switches["no-sandbox"] = ""
+            switches["disable-gpu"] = ""
+            switches["disable-gpu-compositing"] = ""
+            switches["in-process-gpu"] = ""
         cef.Initialize(settings, switches=switches)
         subtest_message("cef.Initialize() ok")
 

unittests/osr_test.py

@@ -124,6 +124,11 @@ def test_osr(self):
             # OnContextInitialized from firing.
             switches["in-process-gpu"] = ""
             switches["no-zygote"] = ""
+        if MAC:
+            # Mach port rendezvous (IPC) fails for child processes on CI
+            # runners because the macOS sandbox blocks bootstrap_look_up.
+            switches["no-sandbox"] = ""
+            switches["in-process-gpu"] = ""
         browser_settings = {
             # Tweaking OSR performance (Issue #240)
             "windowless_frame_rate": 30,  # Default frame rate in CEF is 30