test: combine test deps

test/CMakeLists.txt

@@ -4,6 +4,8 @@ cmake_minimum_required(VERSION 3.0)
 
 enable_testing()
 
+set(TEST_DEPS gtest gtest_main klotski)
+
 ################################################################
 
 unset(CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
@@ -14,16 +16,14 @@ add_library(md5 STATIC ../third_party/md5/md5.cpp)
 
 include_directories(../src/klotski_core/utils)
 add_executable(test_utils utils.cc)
-target_link_libraries(test_utils PUBLIC gtest gtest_main)
-target_link_libraries(test_utils PUBLIC klotski)
+target_link_libraries(test_utils PUBLIC ${TEST_DEPS})
 add_test(NAME utils COMMAND test_utils)
 
 ################################################################
 
 include_directories(../src/klotski_core/all_cases)
 add_executable(test_all_cases all_cases.cc)
-target_link_libraries(test_all_cases PUBLIC gtest gtest_main)
-target_link_libraries(test_all_cases PUBLIC klotski md5)
+target_link_libraries(test_all_cases PUBLIC ${TEST_DEPS} md5)
 add_test(NAME all_cases COMMAND test_all_cases)
 
 ################################################################