Testing INKEY$
==============

Test 1: INKEY$ in non-interactive mode
INKEY$ returns empty string (no input): PASS

Test 2: Multiple INKEY$ calls
Multiple calls return empty: PASS

Test 3: INKEY$ polling loop
Polling loop returns empty (no keys): PASS

Test 4: INKEY$ returns string type
String type confirmed: PASS

INKEY$ tests complete!

Note: INKEY$ is designed for interactive use.
In automated tests (non-TTY), it returns empty string.
For interactive testing, use a program that waits for keypresses.

