gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libcxx/include/__compare/is_eq.h",
    "//libcxx/include/__coroutine/coroutine_handle.h",
    "//libcxx/include/__coroutine/noop_coroutine_handle.h",
    "//libcxx/include/__flat_map/flat_map.h",
    "//libcxx/include/__flat_map/utils.h",
    "//libcxx/include/__utility/cmp.h",
    "//libcxx/include/initializer_list",
    "//libcxx/test/libcxx/diagnostics/flat_map.nodiscard.verify.cpp",
    "//libcxx/test/libcxx/diagnostics/utility.nodiscard.verify.cpp",
    "//libcxx/test/libcxx/language.support/nodiscard.verify.cpp",
    "//libcxx/test/std/containers/container.adaptors/flat.map/flat.map.access/index_transparent.pass.cpp"
  ],
  "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": []
}
running all tests due to change to blacklisted file