Modifies tests build spec to automatically build tests executables wh…

…en running ctest or make test

tests/CMakeLists.txt

@@ -1,4 +1,3 @@
-
 set(TEST_SOURCES
 dep_canonicalization.cpp
 dependency_loop.cpp
@@ -24,16 +23,22 @@ type_already_bound.cpp
 type_already_bound2.cpp
 )
 
+function(add_successful_compile NAME)
+  set(BIN ${NAME}-exec)
+  set(BUILD ${NAME}-build)
+  add_executable(${BIN} ${NAME}.cpp)
+  target_link_libraries(${BIN} fruit)
+  add_test(NAME ${BUILD} COMMAND "${CMAKE_COMMAND}" --build "${CMAKE_BINARY_DIR}" --target ${BIN})
+  set_tests_properties(${NAME} PROPERTIES DEPENDS ${BUILD})
+endfunction(add_successful_compile)
+
 function(add_test_expected_to_pass NAME)
-  add_executable(${NAME}-exec ${NAME}.cpp)
-  target_link_libraries(${NAME}-exec fruit)
   add_test(NAME ${NAME}
       COMMAND valgrind --leak-check=full --malloc-fill=AA --track-origins=yes --read-var-info=yes --num-callers=50 --error-exitcode=1 $<TARGET_FILE:${NAME}-exec>)
+  add_successful_compile(${NAME})
 endfunction(add_test_expected_to_pass)
 
 function(add_test_expected_to_fail_at_runtime NAME MESSAGE)
-  add_executable(${NAME}-exec ${NAME}.cpp)
-  target_link_libraries(${NAME}-exec fruit)
   add_test(NAME ${NAME}
       COMMAND bash -c "
       F=`mktemp`
@@ -51,6 +56,7 @@ function(add_test_expected_to_fail_at_runtime NAME MESSAGE)
       fi
       rm -f \${F}
       ")
+  add_successful_compile(${NAME})
 endfunction(add_test_expected_to_fail_at_runtime)
 
 set(COMPILERS_TO_TEST "g++" "clang++")