[test][1p] Reuse executable for restart test

test/porousmediumflow/1p/implicit/CMakeLists.txt

@@ -53,9 +53,11 @@ dune_add_test(NAME test_1pnibox_conduction
                        --command "${CMAKE_CURRENT_BINARY_DIR}/test_1pnibox_conduction test_1pnifv_conduction.input -Problem.Name 1pnibox_conduction"
                        --zeroThreshold {"velocity_H2O":1e-8})
 
+add_executable(test_1pnibox_convection EXCLUDE_FROM_ALL test_1pnifv.cc)
+target_compile_definitions(test_1pnibox_convection PUBLIC TYPETAG=OnePNIConvectionBoxTypeTag)
+
 dune_add_test(NAME test_1pnibox_convection
-              SOURCES test_1pnifv.cc
-              COMPILE_DEFINITIONS TYPETAG=OnePNIConvectionBoxTypeTag
+              TARGET test_1pnibox_convection
               COMMAND ${CMAKE_SOURCE_DIR}/bin/testing/runtest.py
               CMD_ARGS --script fuzzy
                        --files ${CMAKE_SOURCE_DIR}/test/references/1pniboxconvection-reference.vtp
@@ -64,8 +66,7 @@ dune_add_test(NAME test_1pnibox_convection
                        --zeroThreshold {"velocity":1e-15})
 
 dune_add_test(NAME test_1pnibox_convection_restart
-              SOURCES test_1pnifv.cc
-              COMPILE_DEFINITIONS TYPETAG=OnePNIConvectionBoxTypeTag
+              TARGET test_1pnibox_convection
               COMMAND ${CMAKE_SOURCE_DIR}/bin/testing/runtest.py
               CMD_ARGS --script fuzzy
                        --files ${CMAKE_SOURCE_DIR}/test/references/1pniboxconvection-reference.vtp