gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "test_targets": [
    "//llvm/test:check-llvm"
  ]
}
gn analyze input:
{
  "files": [
    "//llvm/include/llvm/CAS/MappedFileRegionArena.h",
    "//llvm/include/llvm/CAS/OnDiskCASLogger.h",
    "//llvm/include/llvm/CAS/OnDiskDataAllocator.h",
    "//llvm/include/llvm/CAS/OnDiskGraphDB.h",
    "//llvm/include/llvm/CAS/OnDiskKeyValueDB.h",
    "//llvm/include/llvm/CAS/OnDiskTrieRawHashMap.h",
    "//llvm/include/llvm/CAS/UnifiedOnDiskCache.h",
    "//llvm/lib/CAS/ActionCaches.cpp",
    "//llvm/lib/CAS/CMakeLists.txt",
    "//llvm/lib/CAS/DatabaseFile.cpp",
    "//llvm/lib/CAS/DatabaseFile.h",
    "//llvm/lib/CAS/MappedFileRegionArena.cpp",
    "//llvm/lib/CAS/OnDiskCAS.cpp",
    "//llvm/lib/CAS/OnDiskCASLogger.cpp",
    "//llvm/lib/CAS/OnDiskDataAllocator.cpp",
    "//llvm/lib/CAS/OnDiskGraphDB.cpp",
    "//llvm/lib/CAS/OnDiskKeyValueDB.cpp",
    "//llvm/lib/CAS/OnDiskTrieRawHashMap.cpp",
    "//llvm/lib/CAS/UnifiedOnDiskCache.cpp",
    "//llvm/test/tools/llvm-cas/logging.test",
    "//llvm/unittests/CAS/CMakeLists.txt",
    "//llvm/unittests/CAS/OnDiskCASLoggerTest.cpp",
    "//llvm/unittests/CAS/OnDiskGraphDBTest.cpp",
    "//llvm/unittests/CAS/OnDiskTrieRawHashMapTest.cpp",
    "//llvm/unittests/CAS/ProgramTest.cpp",
    "//llvm/utils/gn/secondary/llvm/lib/CAS/BUILD.gn",
    "//llvm/utils/gn/secondary/llvm/unittests/CAS/BUILD.gn"
  ],
  "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": []
}
running all tests due to change to blacklisted file