/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/ is in libaunit-doc 3.7.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operands-ints.adb
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operands-ints.ads
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operands.ads
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operations-addition.ads
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operations-binary.adb
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operations-binary.ads
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operations-ints.adb
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operations-ints.ads
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operations-subtraction.ads
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/operations.ads
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/stack.adb
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/src/stack.ads
/usr/share/doc/libaunit-doc/examples/calculator/tested_lib/testlib.gpr