gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ]
}
gn analyze input:
{
  "files": [
    "//libcxx/test/std/localization/codecvt_unicode.pass.cpp",
    "//libcxx/test/std/ranges/range.access/include.iterator.pass.cpp",
    "//libcxx/utils/libcxx/test/dsl.py",
    "//libcxx/utils/libcxx/test/features.py",
    "//libcxxabi/test/forced_unwind4.pass.cpp",
    "//libcxxabi/test/native/AArch64/ra_sign_state.pass.cpp",
    "//libunwind/test/aarch64_vg_unwind.pass.cpp",
    "//libunwind/test/aix_signal_unwind.pass.sh.S",
    "//libunwind/test/bad_unwind_info.pass.cpp",
    "//libunwind/test/eh_frame_fde_pc_range.pass.cpp",
    "//libunwind/test/floatregister.pass.cpp",
    "//libunwind/test/forceunwind.pass.cpp",
    "//libunwind/test/unw_resume.pass.cpp",
    "//libunwind/test/unwind_scalable_vectors.pass.cpp",
    "//llvm/lib/Analysis/ConstantFolding.cpp",
    "//llvm/test/Transforms/InstCombine/ptrtoaddr.ll"
  ],
  "test_targets": [
    "//clang-tools-extra/clangd/test:check-clangd",
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang",
    "//lld/test:check-lld",
    "//llvm/test:check-llvm"
  ],
  "additional_compile_targets": []
}