gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//flang/test/Lower/achar.f90",
    "//flang/test/Lower/allocatable-return.f90",
    "//flang/test/Lower/allocatable-runtime.f90",
    "//flang/test/Lower/allocate-mold.f90",
    "//flang/test/Lower/allocate-source-allocatables.f90",
    "//flang/test/Lower/allocated.f90",
    "//flang/test/Lower/always-execute-loop-body.f90",
    "//flang/test/Lower/arithmetic-goto.f90",
    "//flang/test/Lower/array-constructor-1.f90",
    "//flang/test/Lower/array-constructor-index.f90",
    "//flang/test/Lower/array-derived.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": []
}