Add a JUnit XML format output for ctest and, upload it as HTML to gitlab as artifact.

This is a complement/alternative to CDash (whose website/server might fail).

.gitlab-ci.yml

@@ -23,7 +23,8 @@ variables:
 
 .ctest_template: &ctest_script
     script:
-        - ctest -O ctest.log -S ./CDashConfScript.cmake -j4
+        - ctest -O ctest.log -S ./CDashConfScript.cmake -j4 --output-junit junit_output.xml
+          # junit output needs cmake/ctest >= 3.21
 
 stages:
     - test
@@ -49,6 +50,13 @@ ctest:
 ctest_python:
     <<: *ctest_script
     variables: {BUILD_WRAPPER_PYTHON: "ON", SLOW_TESTS: "OFF", DONT_PYPLOT_FAUST_TIME: "ON", NOCPPTESTS: "ON", NOPY2: "ON", BUILD_MULTITHREAD: "ON"} #, GIT_STRATEGY: none}
+    after_script:
+      - python3 -m venv junit_venv # use default python3 in PATH (the same has been used in ctest building -- cf. CDashConfScript)
+      - source junit_venv/bin/activate
+      - pip install junit2html
+      - junit2html build_FaustLinuxPython/junit_output.xml build_FaustLinuxPython/python_pyfaust_test_output.html
+      - deactivate
+      - rm -Rf junit_venv
     except:
         - schedules
         - tags
@@ -56,6 +64,11 @@ ctest_python:
     allow_failure: false
     tags:
         - linux
+    artifacts:
+        paths:
+            - build_FaustLinuxPython/python_pyfaust_test_output.html
+        expire_in: '1 week'
+
 
 ctest_matlab:
     <<: *ctest_script