gn analyze output:
{
  "compile_targets": [],
  "status": "No dependency",
  "test_targets": []
}
gn analyze input:
{
  "files": [
    "//libc/test/src/stdfix/AbsTest.h",
    "//libc/test/src/stdfix/BitsFxTest.h",
    "//libc/test/src/stdfix/CountlsTest.h",
    "//libc/test/src/stdfix/DiviFxTest.h",
    "//libc/test/src/stdfix/ExpTest.h",
    "//libc/test/src/stdfix/FxBitsTest.h",
    "//libc/test/src/stdfix/FxDiviTest.h",
    "//libc/test/src/stdfix/ISqrtTest.h",
    "//libc/test/src/stdfix/IdivFxTest.h",
    "//libc/test/src/stdfix/MuliFxTest.h",
    "//libc/test/src/stdfix/RoundTest.h",
    "//libc/test/src/stdfix/SqrtTest.h"
  ],
  "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