🧑‍🌾 Gz gui main tests failing due to no screens available and subprocess aborted

[Crola1702]

Environment

• OS Version: MacOS CI version
• Source gz-gui main build

Description

• Expected behavior: All test should pass
• Actual behavior: There are 8 tests failing because of Subprocess Aborted

Steps to reproduce

1. Run a build in gz-gui_ci-main
2. See tests fail

Output

Reference build: https://build.osrfoundation.org/job/ignition_gui-ci-main-homebrew-amd64/81/

Test regressions:

• UNIT_Dialog_TEST.test_ran
• UNIT_Helpers_TEST.test_ran
• UNIT_ImageDisplay_TEST.test_ran
• UNIT_KeyPublisher_TEST.test_ran
• UNIT_Plugin_TEST.test_ran
• UNIT_PointCloud_TEST.test_ran
• UNIT_Screenshot_TEST.test_ran
• UNIT_TopicEcho_TEST.test_ran

Log output:

There are a lot of warnings at the build stage. Here is the first one:

/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:200:77: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
CFDataRef SecCertificateCopySerialNumberData(SecCertificateRef certificate, CFErrorRef *error)
                                                                            ^
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:200:77: note: insert '_Nullable' if the pointer may be null
CFDataRef SecCertificateCopySerialNumberData(SecCertificateRef certificate, CFErrorRef *error)
                                                                            ^
                                                                                       _Nullable
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:200:77: note: insert '_Nonnull' if the pointer should never be null
CFDataRef SecCertificateCopySerialNumberData(SecCertificateRef certificate, CFErrorRef *error)
                                                                            ^
                                                                                       _Nonnull
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:200:88: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
CFDataRef SecCertificateCopySerialNumberData(SecCertificateRef certificate, CFErrorRef *error)
                                                                                       ^
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:200:88: note: insert '_Nullable' if the pointer may be null
CFDataRef SecCertificateCopySerialNumberData(SecCertificateRef certificate, CFErrorRef *error)
                                                                                       ^
                                                                                         _Nullable 
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:200:88: note: insert '_Nonnull' if the pointer should never be null
CFDataRef SecCertificateCopySerialNumberData(SecCertificateRef certificate, CFErrorRef *error)
                                                                                       ^
                                                                                         _Nonnull 
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:224:73: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
CFDataRef SecCertificateCopySerialNumber(SecCertificateRef certificate, CFErrorRef *error)
                                                                        ^
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:224:73: note: insert '_Nullable' if the pointer may be null
CFDataRef SecCertificateCopySerialNumber(SecCertificateRef certificate, CFErrorRef *error)
                                                                        ^
                                                                                   _Nullable
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:224:73: note: insert '_Nonnull' if the pointer should never be null
CFDataRef SecCertificateCopySerialNumber(SecCertificateRef certificate, CFErrorRef *error)
                                                                        ^
                                                                                   _Nonnull
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:224:84: warning: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Wnullability-completeness]
CFDataRef SecCertificateCopySerialNumber(SecCertificateRef certificate, CFErrorRef *error)
                                                                                   ^
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:224:84: note: insert '_Nullable' if the pointer may be null
CFDataRef SecCertificateCopySerialNumber(SecCertificateRef certificate, CFErrorRef *error)
                                                                                   ^
                                                                                     _Nullable 
/Library/Developer/CommandLineTools/SDKs/MacOSX11.sdk/System/Library/Frameworks/Security.framework/Headers/SecCertificate.h:224:84: note: insert '_Nonnull' if the pointer should never be null
CFDataRef SecCertificateCopySerialNumber(SecCertificateRef certificate, CFErrorRef *error)

In the failing tests you can see Cannot create window: no screens available in each failing test:

test 21
      Start 21: UNIT_ImageDisplay_TEST
...
21: PasteBoard: Error creating pasteboard: com.apple.pasteboard.clipboard [-4960]
21: PasteBoard: Error creating pasteboard: com.apple.pasteboard.find [-4960]
21: no screens available, assuming 24-bit color
21: [GUI] [Wrn] [Application.cc:932] [QT] Populating font family aliases took 210 ms. Replace uses of missing font family "Roboto" with one that exists to avoid this cost. 
21: [GUI] [Err] [Application.cc:936] [QT] Cannot create window: no screens available
...
21/56 Test #21: UNIT_ImageDisplay_TEST ......................Subprocess aborted***Exception:   1.10 sec