Function assert_boot

tests/integration/test_pex_bootstrapper.py:307–325

(python=None)

    run_pex_command(args=["psutil==5.9.0", "-o", pex]).assert_success()

    def assert_boot(python=None):
        # type: (Optional[str]) -> None
        args = [python] if python else []
        args.extend([pex, "-c", "import psutil, sys; print(sys.executable)"])
        output = subprocess.check_output(args=args, stderr=subprocess.PIPE)

        # N.B.: We expect the current interpreter the PEX was built with to be selected since the
        # PEX contains a single platform specific distribution that only works with that
        # interpreter. If the current interpreter is in a venv though, we expect the PEX bootstrap
        # to have broken out of the venv and used its base system interpreter.
        # See:
        #   https://github.com/pex-tool/pex/pull/1130
        #   https://github.com/pex-tool/pex/issues/1031
        assert (
            PythonInterpreter.get().resolve_base_interpreter()
            == PythonInterpreter.from_binary(
                str(output.decode("ascii").strip())
            ).resolve_base_interpreter()
        )

    assert_boot()
    assert_boot(sys.executable)