Change project structure: tests as subdirectory, not as a separate pr…

…oject

Also:
- Set `FETCHCONTENT_BASE_DIR` to default

.github/workflows/cmake-multi-platform.yml

@@ -61,7 +61,7 @@ jobs:
         -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }}
         -DCMAKE_C_COMPILER=${{ matrix.c_compiler }}
         -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
-        -S ${{ github.workspace }}/tests
+        -S ${{ github.workspace }}
 
     - name: Build
       # Build your program with the given configuration. Note that --config is needed because the default Windows generator is a multi-config generator (Visual Studio generator).

CMakeLists.txt

@@ -3,6 +3,8 @@ project(tulz)
 
 set(CMAKE_CXX_STANDARD 20)
 
+option(TULZ_ENABLE_TESTS "Turn it off in order to disable tests" ON)
+
 set(TULZ_OBSERVER_SOURCES
         include/tulz/observer/Observer.h
         include/tulz/observer/Subject.h
@@ -96,4 +98,9 @@ target_include_directories(tulz PUBLIC include)
 
 if (ANDROID)
     target_include_directories(tulz PUBLIC android/include)
+endif()
+
+if (TULZ_ENABLE_TESTS)
+    enable_testing()
+    add_subdirectory(tests)
 endif()

tests/CMakeLists.txt

@@ -1,23 +1,11 @@
 cmake_minimum_required(VERSION 3.14)
 project(tulz-tests)
 
-enable_testing()
-
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 include(FetchContent)
 
-if (UNIX)
-    set(DEPS_DIR "deps")
-elseif (WIN32)
-    set(DEPS_DIR "deps-win")
-else()
-    message(FATAL_ERROR "Unsupported OS")
-endif()
-
-get_filename_component(FETCHCONTENT_BASE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${DEPS_DIR}" REALPATH)
-
 FetchContent_Declare(googletest
         GIT_REPOSITORY https://github.com/google/googletest.git
         GIT_TAG v1.14.0)
@@ -27,8 +15,6 @@ set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
 
 FetchContent_MakeAvailable(googletest)
 
-add_subdirectory(../ tulz)
-
 include_directories(${gtest_SOURCE_DIR}/include ${gtest_SOURCE_DIR})
 
 function(add_gtest name src)