add pytest installs

Author: paulbkoch

.github/workflows/ci.yml

@@ -350,6 +350,7 @@ jobs:
           install_file=$(echo bld/powerlift/powerlift-*.whl)
           install_file=$(basename "$install_file" .whl)
           python -m pip install "bld/powerlift/$install_file.whl[datasets,docker,postgres,mssql,aci,testing]"
+          python -m pip install pytest pytest-xdist pytest-cov
           mkdir -p "tmp/zqmr/t"
           cp -R "python/powerlift/tests/" "tmp/zqmr/t/"
           cd "tmp/zqmr/t"
@@ -362,6 +363,7 @@ jobs:
           $install_file = $install_file.Name -replace '\.whl$', ''
           $env:PATH += ';C:\Program Files\Microsoft Visual Studio\18\Enterprise\MSBuild\Current\Bin'
           python -m pip install "bld/powerlift/$install_file.whl[datasets,docker,postgres,mssql,aci,testing]"
+          python -m pip install pytest pytest-xdist pytest-cov
           New-Item -Path "tmp/zqmr/t" -ItemType Directory -Force
           xcopy /E "python\powerlift\tests\*" "tmp\zqmr\t\"
           cd "tmp/zqmr/t"
@@ -538,6 +540,7 @@ jobs:
           install_file=$(echo bld/sdist/interpret_core-*.tar.gz)
           install_file=$(basename "$install_file" .tar.gz)
           python -m pip install "bld/sdist/$install_file.tar.gz[debug,notebook,plotly,lime,sensitivity,shap,linear,treeinterpreter,aplr,dash,skoperules,excel,testing]"
+          python -m pip install pytest pytest-xdist pytest-cov
           mkdir -p "tmp/zqmr/t"
           tar -xzvf "bld/sdist/$install_file.tar.gz" -C "tmp/zqmr/t" "$install_file/tests"
           cd "tmp/zqmr/t"
@@ -550,6 +553,7 @@ jobs:
           $install_file = $install_file.Name -replace '\.tar\.gz$', ''
           $env:PATH += ';C:\Program Files\Microsoft Visual Studio\18\Enterprise\MSBuild\Current\Bin'
           python -m pip install "bld/sdist/$install_file.tar.gz[debug,notebook,plotly,lime,sensitivity,shap,linear,treeinterpreter,aplr,dash,skoperules,excel,testing]"
+          python -m pip install pytest pytest-xdist pytest-cov
           New-Item -Path "tmp/zqmr/t" -ItemType Directory -Force
           tar -xzvf "bld/sdist/$install_file.tar.gz" -C "tmp/zqmr/t" "$install_file/tests"
           cd "tmp/zqmr/t"