Add an integration test for the incompatible major version case

- Khiops 10 is installed in a dedicated conda environment for this purpose

Author: Thierry RAMORASOAVINA

.github/workflows/tests.yml

@@ -454,7 +454,21 @@ jobs:
             echo "::error::Status error: improper setup, as expected: khiops-python has been cloned, not installed from a package"
           fi
 
-          # Run integration tests on Ubuntu and Rocky
+          # Run the library against an incompatible Khiops (with a different major version)
+          # This instance of Khiops is isolated in a dedicated conda environment
+          CONDA="/root/miniforge3/bin/conda"                
+          # Check an error is raised because of the major version mismatch
+          # The khiops-python library from the cloned sources is used here
+          $CONDA run -n py3_khiops10_conda python -c "import khiops.core as kh; print(kh.get_runner().khiops_version)" 2>&1 | grep -Ei 'major version.*?does not match'
+          if [ $RETCODE -ne 0 ]; then
+            echo "::error::Status error: khiops-python should fail because of the major version mismatch"          
+            if [[ "${{ matrix.container }}" == "debian13" ]]; then            
+              deactivate                      
+            fi          
+            exit 1;
+          fi
+
+          # Run the remaining integration tests
           python -m unittest -v tests.test_khiops_integrations
 
           # Execute Khiops sample (train and deploy model), which uses MPI

packaging/docker/khiopspydev/Dockerfile.debian

@@ -74,7 +74,12 @@ RUN true \
         $CONDA install -y -n py${version}_conda \
         khiops-driver-s3==${KHIOPS_S3_DRIVER_REVISION} \
         khiops-driver-gcs==${KHIOPS_GCS_DRIVER_REVISION}; \
-    done' \
+    done; \
+    # Install Khiops from a different major version in a dedicated conda environment \
+    # The python interpreter version of the base environment is used as no specific version is given \
+    $CONDA create -y -n py3_khiops10_conda; \
+    $CONDA install -y -n py3_khiops10_conda khiops::khiops-core==10.3.1; \
+    ' \
   && true
 
 RUN mkdir -p /scripts

packaging/docker/khiopspydev/Dockerfile.rocky

@@ -87,8 +87,13 @@ RUN true \
         do \
             $CONDA create -y -n $CONDA_ENV python=${version}; \
         done; \
-        $CONDA install -y -n py${version}_conda ${RC_LABEL}khiops-core=$(echo ${KHIOPS_REVISION} | tr -d "-") ; \
-    done' \
+        $CONDA install -y -n py${version}_conda ${RC_LABEL}khiops-core==$(echo ${KHIOPS_REVISION} | tr -d "-") ; \
+    done; \
+    # Install Khiops from a different major version in a dedicated conda environment \
+    # The python interpreter version of the base environment is used as no specific version is given \
+    $CONDA create -y -n py3_khiops10_conda; \
+    $CONDA install -y -n py3_khiops10_conda khiops::khiops-core==10.3.1; \
+    ' \
   && true
 
 RUN mkdir -p /scripts

packaging/docker/khiopspydev/Dockerfile.ubuntu

@@ -72,7 +72,12 @@ RUN true \
         $CONDA install -y -n py${version}_conda \
         khiops-driver-s3==${KHIOPS_S3_DRIVER_REVISION} \
         khiops-driver-gcs==${KHIOPS_GCS_DRIVER_REVISION}; \
-    done' \
+    done; \
+    # Install Khiops from a different major version in a dedicated conda environment \
+    # The python interpreter version of the base environment is used as no specific version is given \
+    $CONDA create -y -n py3_khiops10_conda; \
+    $CONDA install -y -n py3_khiops10_conda khiops::khiops-core==10.3.1; \
+    ' \
   && true
 
 RUN mkdir -p /scripts