gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang-rt/unittests/CMakeLists.txt",
    "//flang-rt/unittests/Evaluate/ISO-Fortran-binding.cpp",
    "//flang-rt/unittests/Runtime/AccessTest.cpp",
    "//flang-rt/unittests/Runtime/CrashHandlerFixture.cpp",
    "//flang-rt/unittests/Runtime/Descriptor.cpp",
    "//flang-rt/unittests/Runtime/ExternalIOTest.cpp",
    "//libc/benchmarks/CMakeLists.txt",
    "//llvm/CMakeLists.txt",
    "//llvm/cmake/modules/AddLLVM.cmake",
    "//runtimes/CMakeLists.txt",
    "//third-party/unittest/CMakeLists.txt",
    "//third-party/unittest/UnitTestMain/CMakeLists.txt"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//compiler-rt/test/hwasan:check-hwasan",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}