ci: install pytest-subtests

Which lets pytest understand unittest.subtest

.github/workflows/cygwin.yml

@@ -74,7 +74,7 @@ jobs:
       - name: Run pip
         run: |
           export PATH=/usr/bin:/usr/local/bin:$(cygpath ${SYSTEMROOT})/system32
-          python3 -m pip --disable-pip-version-check install gcovr jsonschema pefile pytest pytest-xdist coverage codecov
+          python3 -m pip --disable-pip-version-check install gcovr jsonschema pefile pytest pytest-subtests pytest-xdist coverage codecov
         shell: C:\cygwin\bin\bash.exe --noprofile --norc -o igncr -eo pipefail '{0}'
 
       - name: Run tests

.github/workflows/macos.yml

@@ -30,7 +30,7 @@ jobs:
         python-version: '3.x'
     - run: |
         python -m pip install --upgrade pip
-        python -m pip install pytest pytest-xdist jsonschema coverage codecov
+        python -m pip install pytest pytest-xdist pytest-subtests jsonschema coverage codecov
     - run: brew install pkg-config ninja llvm qt@5
     - env:
         CPPFLAGS: "-I/usr/local/include"

.github/workflows/msys2.yml

@@ -79,7 +79,7 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python3 -m pip --disable-pip-version-check install gcovr jsonschema pefile pytest pytest-xdist coverage codecov
+          python3 -m pip --disable-pip-version-check install gcovr jsonschema pefile pytest pytest-subtests pytest-xdist coverage codecov
 
       - name: Run Tests
         run: |

ci/ciimage/common.sh

@@ -13,6 +13,7 @@ set -x
 base_python_pkgs=(
   pytest
   pytest-xdist
+  pytest-subtests
   coverage
   codecov
   jsonschema

ci/run.ps1

@@ -81,7 +81,7 @@ python --version
 
 # Needed for running unit tests in parallel.
 echo ""
-python -m pip --disable-pip-version-check install --upgrade pefile pytest-xdist jsonschema coverage
+python -m pip --disable-pip-version-check install --upgrade pefile pytest-xdist pytest-subtests jsonschema coverage
 
 echo ""
 echo "=== Start running tests ==="