Use scripts/gen_coverage.py in generate-coverage workflow

Convert two .lcov files from different runs into 2 json files,
combine them in Python and then use coveralls to merge the combined
result with coverage data and upload

Author: oleksandr-pavlyk

.github/workflows/generate-coverage.yaml

@@ -85,30 +85,7 @@ jobs:
         shell: bash -l {0}
         run: |
           source /opt/intel/oneapi/setvars.sh
-          export _SAVED_PATH=${PATH}
-          export PATH=$(dirname $(dirname $(which icx)))/bin-llvm:${PATH}
-          python setup.py develop --                                               \
-              -G "Ninja"                                                           \
-              -DCMAKE_BUILD_TYPE=Debug                                             \
-              -DCMAKE_C_COMPILER:PATH=icx                                          \
-              -DCMAKE_CXX_COMPILER:PATH=icpx                                       \
-              -DDPCTL_ENABLE_L0_PROGRAM_CREATION=ON                                \
-              -DDPCTL_GENERATE_COVERAGE=ON                                         \
-              -DDPCTL_BUILD_CAPI_TESTS=ON                                          \
-              -DDPCTL_COVERAGE_REPORT_OUTPUT_DIR=$(pwd)
-          pushd $(find _skbuild -name cmake-build)
-          cmake --build . --target lcov-genhtml || exit 1
-          popd
-          export PATH=${_SAVED_PATH}
-          unset _SAVED_PATH
-          python -c "import dpctl; print(dpctl.__version__); dpctl.lsplatform()" || exit 1
-          export LLVM_PROFILE_FILE="dpctl_pytest.profraw"
-          pytest -q -ra --disable-warnings --cov-config pyproject.toml --cov dpctl \
-              --cov-report term-missing --pyargs dpctl -vv                         \
-              --ignore=dpctl/tensor/libtensor/tests || exit 1
-          $(dirname $(dirname $(which icx)))/bin-llvm/llvm-profdata merge \
-              -sparse ${LLVM_PROFILE_FILE} -o dpctl_pytest.profdata || exit 1
-
+          python scripts/gen_coverage.py
 
       - name: Install coverall dependencies
         shell: bash -l {0}
@@ -120,9 +97,18 @@ jobs:
         shell: bash -l {0}
         run: |
           coveralls-lcov -v -n \
-              $(find _skbuild -name dpctl.lcov) \
-              $(find . -name dpctl_pytest.lcov) > dpctl-c-api-coverage.json
-          coveralls --service=github --merge=dpctl-c-api-coverage.json
+              $(find _skbuild -name dpctl.lcov) > dpctl-c-api-coverage.json
+          coveralls-lcov -v -n \
+              $(find . -name dpctl_pytest.lcov) > pytest-dpctl-c-api-coverage.json
+          # merge json files
+          python -c "import json; \
+              f1 = json.load('dpctl-c-api-coverage.json"); \
+              f2 = json.load('pytest-dpctl-c-api-coverage.json"); \
+              f3 = {'source_files': f1['source_files'] + f2['source_files']}; \
+              fh = open('combined-dpctl-c-api-coverage.json', 'w'); \
+              json.dump(f3, fh); fh.close()" || exit 1
+          # merge combined file with coverage data and upload
+          coveralls --service=github --merge=combined-dpctl-c-api-coverage.json
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           COVERALLS_PARALLEL: true