ignore packaging (only jlink failing) + add unit tests

Author: tvallin

.github/workflows/validate.yml

@@ -102,10 +102,11 @@ jobs:
     timeout-minutes: 30
     strategy:
       matrix:
-        os: [ ubuntu-20.04 ]
+        os: [ ubuntu-20.04, windows-2022 ]
         moduleSet: [ core, it, dbclient, dbclient-oracle, others ]
         include:
           - { os: ubuntu-20.04, platform: linux }
+          - { os: windows-2022, platform: windows }
     runs-on: ${{ matrix.os }}
     name: tests/${{ matrix.moduleSet }}
     steps:
@@ -314,7 +315,7 @@ jobs:
     timeout-minutes: 30
     strategy:
       matrix:
-        os: [ ubuntu-20.04, macos-14, windows-2022 ]
+        os: [ ubuntu-20.04, macos-14 ]
         packaging: [ jar, jlink ]
         include:
           - { os: ubuntu-20.04, platform: linux }