test/CMakeLists.txt: Modernized GTest-integration

CMakeLists.txt

@@ -99,6 +99,7 @@ if(DOWNLOAD_GTEST OR GTEST_SRC_DIR)
 endif()
 
 if(BUILD_TESTS)
+    enable_testing()
     include_directories(${XTENSOR_BLAS_INCLUDE_DIR})
     include_directories(${xtensor_INCLUDE_DIRS})
     add_subdirectory(test)

test/CMakeLists.txt

@@ -12,6 +12,8 @@ cmake_minimum_required(VERSION 3.1)
 if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
     project(xtensor-blas-test)
 
+    enable_testing()
+
     find_package(xtensor REQUIRED CONFIG)
     set(XTENSOR_INCLUDE_DIR ${xtensor_INCLUDE_DIRS})
     find_package(xtensor-blas REQUIRED CONFIG)
@@ -75,7 +77,10 @@ if(DOWNLOAD_GTEST OR GTEST_SRC_DIR)
                      ${CMAKE_CURRENT_BINARY_DIR}/googletest-build EXCLUDE_FROM_ALL)
 
     set(GTEST_INCLUDE_DIRS "${gtest_SOURCE_DIR}/include")
-    set(GTEST_BOTH_LIBRARIES gtest_main gtest)
+    add_library(GTest::GTest INTERFACE IMPORTED)
+    target_link_libraries(GTest::GTest INTERFACE gtest)
+    add_library(GTest::Main INTERFACE IMPORTED)
+    target_link_libraries(GTest::Main INTERFACE gtest_main)
 else()
     find_package(GTest REQUIRED)
 endif()
@@ -117,11 +122,12 @@ if(DOWNLOAD_GTEST OR GTEST_SRC_DIR)
     add_dependencies(test_xtensor_blas gtest_main)
 endif()
 
-target_link_libraries(test_xtensor_blas ${BLAS_LIBRARIES} ${LAPACK_LIBRARIES} ${GTEST_BOTH_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
+target_link_libraries(test_xtensor_blas ${BLAS_LIBRARIES} ${LAPACK_LIBRARIES} GTest::GTest GTest::Main ${CMAKE_THREAD_LIBS_INIT})
 if(CPP17)
     target_compile_features(test_xtensor_blas PUBLIC cxx_std_17)
 else()
     target_compile_features(test_xtensor_blas PUBLIC cxx_std_14)
 endif()
 
 add_custom_target(xtest COMMAND test_xtensor_blas DEPENDS test_xtensor_blas)
+add_test(NAME xtest COMMAND test_xtensor_blas)