gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "test_targets": [
    "//clang/test:check-clang"
  ]
}
gn analyze input:
{
  "files": [
    "//clang/docs/ClangRepl.rst",
    "//clang/test/Interpreter/bad_percent_command.cpp",
    "//clang/test/Interpreter/dynamic-library-bad-args.cpp",
    "//clang/test/Interpreter/help.cpp",
    "//clang/tools/clang-repl/ClangRepl.cpp",
    "//flang/lib/Lower/Bridge.cpp",
    "//flang/test/Lower/undef-func-result.f90"
  ],
  "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": []
}