gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libcxx/test/libcxx/language.support/support.c.headers/support.c.headers.other/math.lerp.verify.cpp",
    "//libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_is_same.sh.cpp",
    "//libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_metafunctions.sh.cpp",
    "//libcxx/test/libcxx/utilities/meta/stress_tests/stress_test_variant_overloads_impl.sh.cpp",
    "//libcxx/test/libcxx/utilities/template.bitset/includes.pass.cpp",
    "//libcxx/test/std/language.support/support.c.headers/support.c.headers.other/math.lerp.pass.cpp",
    "//libcxx/test/std/thread/thread.threads/thread.thread.this/sleep_for.pass.cpp",
    "//libcxx/test/std/thread/thread.threads/thread.thread.this/sleep_for.signals.pass.cpp",
    "//libcxx/test/std/thread/thread.threads/thread.thread.this/sleep_for_tested_elsewhere.pass.cpp",
    "//libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.badcall/visibility_inlines_hidden.cpp",
    "//libcxx/test/std/utilities/function.objects/refwrap/binary.pass.cpp",
    "//libcxx/test/std/utilities/function.objects/refwrap/unary.pass.cpp",
    "//libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/race_condition.pass.cpp",
    "//libcxx/test/std/utilities/utility/pairs/pairs.pair/pair.incomplete.compile.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": []
}