gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//clang/test/CXX/drs/cwg0xx.cpp",
    "//clang/test/CXX/drs/cwg10xx.cpp",
    "//clang/test/CXX/drs/cwg13xx.cpp",
    "//clang/test/CXX/drs/cwg15xx.cpp",
    "//clang/test/CXX/drs/cwg16xx.cpp",
    "//clang/test/CXX/drs/cwg1736.cpp",
    "//clang/test/CXX/drs/cwg17xx.cpp",
    "//clang/test/CXX/drs/cwg18xx.cpp",
    "//clang/test/CXX/drs/cwg1xx.cpp",
    "//clang/test/CXX/drs/cwg2026.cpp",
    "//clang/test/CXX/drs/cwg20xx.cpp",
    "//clang/test/CXX/drs/cwg2406.cpp",
    "//clang/test/CXX/drs/cwg24xx.cpp",
    "//clang/test/CXX/drs/cwg25xx.cpp",
    "//clang/test/CXX/drs/cwg2881.cpp",
    "//clang/test/CXX/drs/cwg28xx.cpp",
    "//clang/test/CXX/drs/cwg2xx.cpp",
    "//clang/test/CXX/drs/cwg329.cpp",
    "//clang/test/CXX/drs/cwg390.cpp",
    "//clang/test/CXX/drs/cwg3xx.cpp",
    "//clang/test/CXX/drs/cwg4xx.cpp",
    "//clang/test/CXX/drs/cwg5xx.cpp",
    "//clang/test/CXX/drs/cwg6xx.cpp",
    "//clang/test/CXX/drs/cwg7xx.cpp",
    "//clang/test/CXX/drs/cwg98.cpp",
    "//clang/test/CXX/drs/cwg9xx.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": []
}