Switch Cache Creator unit tests to gtest/gmock

Allow tests to be executed with lit (`ninja check-cache-creator-units`).

This is keep consistent with LLPC and LLVM.

tools/cache_creator/CMakeLists.txt

@@ -78,15 +78,6 @@ add_dependencies(xgl cache-creator cache-info)
 if(XGL_BUILD_LIT)
     message(STATUS "Building cache creator LIT tests")
     set(CACHE_CREATOR_TOOLS_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}")
-    add_subdirectory(test "${CMAKE_CURRENT_BINARY_DIR}/test/cache-creator")
+    add_subdirectory(test "${CMAKE_CURRENT_BINARY_DIR}/test/cache-creator/lit")
+    add_subdirectory(unittests "${CMAKE_CURRENT_BINARY_DIR}/test/cache-creator/unittests")
 endif()
-
-# This executable runs cache-creator unit tests.
-add_executable(cache-creator-unit-tests)
-target_sources(cache-creator-unit-tests PRIVATE
-    units/cache_creator_units_main.cpp
-    units/cache_creator_tests.cpp
-    units/cache_info_tests.cpp
-)
-target_include_directories(cache-creator-unit-tests PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
-target_link_libraries(cache-creator-unit-tests PRIVATE cache_creator_lib)

tools/cache_creator/docker/check_xgl.Dockerfile

@@ -37,9 +37,8 @@ RUN cat /vulkandriver/build_info.txt \
 WORKDIR /vulkandriver/builds/ci-build
 RUN source /vulkandriver/env.sh \
     && cmake --build . \
-    && cmake --build . --target amdvlk64.so cache-creator cache-creator-unit-tests
+    && cmake --build . --target amdvlk64.so cache-creator
 
 # Run cache-creator tests.
 RUN source /vulkandriver/env.sh \
-    && cmake --build . --target check-cache-creator \
-    && tools/cache-creator-unit-tests
+    && cmake --build . --target check-cache-creator check-cache-creator-units