link against gtest-main

Don't bother with custom main function. No benefit.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

unitTests/CMakeLists.txt

@@ -6,7 +6,6 @@ if( EXV_ENABLE_VIDEO )
 endif()
 
 add_executable(unit_tests
-    mainTestRunner.cpp
     test_basicio.cpp
     test_bmpimage.cpp
     test_cr2header_int.cpp
@@ -45,7 +44,6 @@ target_compile_definitions(unit_tests
 target_link_libraries(unit_tests
     PRIVATE
         exiv2lib
-        GTest::gtest
         GTest::gtest_main
         std::filesystem
 )

unitTests/mainTestRunner.cpp

@@ -1,14 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <gtest/gtest.h>
-#include <iostream>
-
-int main(int argc, char** argv) {
-  ::testing::InitGoogleTest(&argc, argv);
-
-  int ret = RUN_ALL_TESTS();
-
-  std::cout << "Tests finished with return value: " << ret << std::endl;
-
-  return ret;
-}