Fortran error tests

Fortran error tests should be added, as suggested in #13 (closed).

For this some things have to be reworked, additional error checking enabled (such as correct permissions for already existing VTK output directories), that we can use to test against.

tests/fortran_error/CMakeLists.txt

+# The VTK error test case, where the output directory is not accessible.
+set(OUT_DIR vtk_outline)
+add_test(
+    NAME fortran_error_vtk_setup
+    COMMAND ${BASH} -c "mkdir -p ${OUT_DIR} && chmod -x ${OUT_DIR}; exit $?"
+    )
+set_tests_properties(fortran_error_vtk_setup PROPERTIES
+    LABELS "ALL;fortran_error"
+    FIXTURES_SETUP fortran_error_filesystem
+    )
+add_test(
+    NAME fortran_error_vtk_cleanup
+    COMMAND ${BASH} -c "chmod +x ${OUT_DIR} && rm -rf ${OUT_DIR}"
+    )
+set_tests_properties(fortran_error_vtk_cleanup PROPERTIES
+    LABELS "ALL;fortran_error"
+    FIXTURES_CLEANUP fortran_error_filesystem
+    )
+add_test(
+    NAME fortran_error_vtk
+    COMMAND ${BASH} -c "mpirun -n 1 $<TARGET_FILE:ALL_Staggered_f>; exit $?"
+    )
+set_tests_properties(fortran_error_vtk PROPERTIES
+    LABELS "ALL;fortran_error"
+    FIXTURES_REQUIRED fortran_error_filesystem
+    WILL_FAIL TRUE
+    )
 
 
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