Add ctest cases from existing example tests (#20)

* rework github action for build and test and delete old one

* adapt workflow to be compatible with local execution using nektos/act

* switch back to explicit docker create/exec commands instead of 'container' option

The container option doesn't support QEMU emulation and thus selecting a architecture
different from the runners/host's one crashed the container with a 'exec format error'.

Unfortunately this breaks running the workflows locally using nektos/act. I still have
to figure out why exactly.

* fix whitespaces and newline at end of file

* replace hardcoded paths by variable ones in upload-artifact steps

* Clean up docker create command

* Consistently use bash -c in docker exec commands, and use single quotes instead of double quotes to prevent host side shell expansion

* Enable testing and add test cases from run_tests.sh

* Execute tests as non root since MPI requires this.

* fix newline at end of file

* set max. cores to two for debugging MPI in GitHub Action runners

* Add non-root user already in first stage, to make it available in the fans-ci image as well

* remove linux/arm64 from build and test workflow. Drop QEMU and make use of container: parameter

* add debug output to compare two ways of determining available cores/mpi slots

* use cmake_host_system_information instead as this actually gives the number of physical cores, which is the relevant number for MPI

* remove unnecessary ProcessorCount module include

* Update test names in CMake recipe

* Use correct path in test execution in the CMake recipe

* Use correct capital case

* Use correct relative path in test/CMakeLists.txt

Co-authored-by: Sanath Keshav <sanathkeshav.mysore@gmail.com>

---------

Co-authored-by: Ishaan Desai <ishaandesai@gmail.com>
Co-authored-by: Sanath Keshav <sanathkeshav.mysore@gmail.com>

CMakeLists.txt

@@ -251,6 +251,19 @@ install(
         COMPONENT FANS_Development
 )
 
+# ##############################################################################
+# TESTING
+# ##############################################################################
+
+if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
+    set(FANS_ENABLE_TESTING_DEFAULT ON)
+endif ()
+option(FANS_ENABLE_TESTING "Enable testing" ${FANS_ENABLE_TESTING_DEFAULT})
+if (FANS_ENABLE_TESTING)
+    enable_testing()
+    add_subdirectory(test)
+endif ()
+
 # ##############################################################################
 # PACKAGING
 # ##############################################################################

test/CMakeLists.txt

@@ -0,0 +1,33 @@
+set(FANS_TEST_INPUT_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+set(FANS_TEST_OUTPUT_DIR ${CMAKE_CURRENT_BINARY_DIR})
+set(FANS_EXECUTABLE $<TARGET_FILE:FANS_main>)
+
+# determine MPI process count. The discretization of the test geometry allows for max. 8 processes.
+set(FANS_N_MPI_PROCESSES_MAX 8)
+cmake_host_system_information(RESULT FANS_CORES_AVAILABLE QUERY NUMBER_OF_PHYSICAL_CORES)
+if (FANS_N_MPI_PROCESSES_MAX LESS FANS_CORES_AVAILABLE)
+    set(FANS_N_MPI_PROCESSES ${FANS_N_MPI_PROCESSES_MAX})
+else()
+    set(FANS_N_MPI_PROCESSES ${FANS_CORES_AVAILABLE})
+endif()
+message(STATUS "Will use ${FANS_N_MPI_PROCESSES} processes for MPI test cases.")
+
+set(FANS_TEST_CASES
+    J2Plasticity
+    LinearElastic
+    LinearThermal
+    PseudoPlastic
+)
+
+list(LENGTH FANS_TEST_CASES N_TESTS)
+math(EXPR N_TESTS "${N_TESTS} - 1")
+
+foreach(N RANGE ${N_TESTS})
+    list(GET FANS_TEST_CASES ${N} FANS_TEST_CASE)
+
+    add_test(
+        NAME ${FANS_TEST_CASE}
+        COMMAND mpiexec -n ${FANS_N_MPI_PROCESSES} ${FANS_EXECUTABLE} input_files/test_${FANS_TEST_CASE}.json ${FANS_TEST_OUTPUT_DIR}/test_${FANS_TEST_CASE}.h5
+        WORKING_DIRECTORY ${FANS_TEST_INPUT_DIR}
+    )
+endforeach()