How UTopia generate code coverage?

[AxelHowe]

Hello,

I encountered an issue while trying to reproduce evaluation

I want to check the code coverage and I'm not sure if my approach is correct.

I followed the steps below, using assimp as an example:

python3 -m helper.make assimp
python3 -m helper.build assimp

I executed the fuzz driver VTAdjacencyTest_unreferencedVerticesSet_Test to obtain default.profraw

cd exp/assimp/output/profiles/
./VTAdjacencyTest_unreferencedVerticesSet_Test

llvm-profdata-10 merge -sparse default.profraw -o test.profdata
llvm-cov-10 report ./VTAdjacencyTest_unreferencedVerticesSet_Test -instr-profile=test.profdata

The report shows that the code coverage is 0%.

I tested other projects in the same way and got the same result.

Filename                                                              Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
code/AssetLib/3DS/3DSConverter.cpp                                        281               281     0.00%          10                10     0.00%         681               681     0.00%
code/AssetLib/3DS/3DSExporter.cpp                                         146               146     0.00%          19                19     0.00%         448               448     0.00%
code/AssetLib/3DS/3DSHelper.h                                              21                21     0.00%          18                18     0.00%          89                89     0.00%
code/AssetLib/3DS/3DSLoader.cpp                                           572               572     0.00%          27                27     0.00%        1171              1171     0.00%
code/AssetLib/3MF/D3MFExporter.cpp                                        114               114     0.00%          20                20     0.00%         311               311     0.00%

... 

include/assimp/commonMetaData.h                                             0                 0         -           0                 0         -           0                 0         -
include/assimp/version.h                                                    0                 0         -           0                 0         -           0                 0         -
test/unit/ImportExport/MDL/MDLHL1TestFiles.h                                0                 0         -           0                 0         -           0                 0         -
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                                                   96166             96166     0.00%        8372              8372     0.00%      150380            150380     0.00%

I would like to know how UTopia calculates code coverage.

Thank you for your response.