test_diffusion3d: add correct input file argument to CMake test

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@11489 2fb0f335-1f38-0410-981e-8018bf24f1b0

test/decoupled/1p/CMakeLists.txt

@@ -23,7 +23,8 @@ add_test(test_diffusion3d
   ${CMAKE_SOURCE_DIR}/bin/fuzzycomparevtu.py
   ${CMAKE_SOURCE_DIR}/test/references/test_diffusion3d-reference.vtu
   ${CMAKE_CURRENT_BINARY_DIR}/test_diffusion3d_mimetic-00001.vtu
-  ${CMAKE_CURRENT_BINARY_DIR}/test_diffusion3d)
+  ${CMAKE_CURRENT_BINARY_DIR}/test_diffusion3d
+  ${CMAKE_CURRENT_SOURCE_DIR}/test_diffusion3d.input)
 
 set(NORMALTESTS
   test_dec1p