gn analyze output:
{
  "compile_targets": [],
  "status": "Found dependency",
  "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"
  ]
}
gn analyze input:
{
  "files": [
    "//clang-tools-extra/clangd/ModulesBuilder.cpp",
    "//clang/include/clang/Frontend/ASTUnit.h",
    "//clang/include/clang/Frontend/CompilerInstance.h",
    "//clang/include/clang/Serialization/ASTReader.h",
    "//clang/include/clang/Serialization/ASTWriter.h",
    "//clang/include/clang/Serialization/ModuleCache.h",
    "//clang/include/clang/Serialization/ModuleManager.h",
    "//clang/lib/Frontend/ASTUnit.cpp",
    "//clang/lib/Frontend/CompilerInstance.cpp",
    "//clang/lib/Frontend/PrecompiledPreamble.cpp",
    "//clang/lib/Serialization/ASTReader.cpp",
    "//clang/lib/Serialization/ASTWriter.cpp",
    "//clang/lib/Serialization/CMakeLists.txt",
    "//clang/lib/Serialization/GeneratePCH.cpp",
    "//clang/lib/Serialization/ModuleCache.cpp",
    "//clang/lib/Serialization/ModuleManager.cpp",
    "//clang/unittests/Frontend/FrontendActionTest.cpp",
    "//clang/unittests/Lex/HeaderSearchTest.cpp",
    "//llvm/utils/gn/secondary/clang/lib/Serialization/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