gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "test_targets": [
    "//clang-tools-extra/test:check-clang-tools",
    "//clang/test:check-clang"
  ]
}
gn analyze input:
{
  "files": [
    "//libcxx/include/__cxx03/__atomic/atomic.h",
    "//libcxx/include/__cxx03/__atomic/atomic_base.h",
    "//libcxx/include/__cxx03/sstream",
    "//libcxx/test/libcxx-03/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add.verify.cpp",
    "//libcxx/test/libcxx-03/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_add_explicit.verify.cpp",
    "//libcxx/test/libcxx-03/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub.verify.cpp",
    "//libcxx/test/libcxx-03/atomics/atomics.types.operations/atomics.types.operations.req/atomic_fetch_sub_explicit.verify.cpp",
    "//libcxx/test/libcxx-03/input.output/string.streams/stringbuf/const_sso_buffer.pass.cpp",
    "//libcxx/test/std/atomics/types.pass.cpp",
    "//libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.cons/default.pass.cpp"
  ],
  "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": []
}
running all tests due to change to blacklisted file