def test_graphics():
memory = Memory()
screen = FakeScreen(memory)
cpu = Cpu(GRAPHICS, screen=screen, memory=memory)
cpu.run_until_exit_or_halt()
assert cpu.output == []
assert memory[210] == 254
def run_program(cpu: Cpu):
try:
while True:
cpu.run_until_exit_or_halt()
if cpu.has_exited:
print(f"Program exited with code {cpu.exit_code}")
return
if cpu.halted:
print(f"Program halted at {cpu.instruction_pointer}")
print_debugger_help()
while cpu.halted:
choice = input("> ")
if choice.startswith("1"):
cpu.halted = False
elif choice.startswith("2"):
cpu.run_one_cycle()
if cpu.has_exited:
print(f"Program exited with code {cpu.exit_code}")
return
elif choice.startswith("3"):
print(cpu.dump())
else:
print_debugger_help()
except Exception as e:
raise Exception(f"Program crashed: {e}") from e
def test_breakpoint():
cpu = Cpu(BREAKPOINT)
cpu.run_until_exit_or_halt()
assert cpu.output == ["1"]
assert cpu.halted
cpu.halted = False
cpu.run_until_exit_or_halt()
assert cpu.output == ["1", "2"]
def test_fibonacci():
cpu = Cpu(FIBONACCI)
cpu.run_until_exit_or_halt()
# Fibonacci sequence loops around at 255
assert cpu.output == ["0", "1", "1", "2", "3", "5", "8", "13", "21", "34", "55", "89", "144", "233", "121", "98"]
def test_subroutine():
cpu = Cpu(SUBROUTINE)
cpu.run_until_exit_or_halt()
assert cpu.output == ["1", "2", "3"]
def test_add_two_args():
cpu = Cpu(ADD_TWO_ARGS, args=[38, 4])
cpu.run_until_exit_or_halt()
assert cpu.output == ["42"]
def test_1337():
cpu = Cpu(PRINT_1337)
cpu.run_until_exit_or_halt()
assert cpu.output == ["1", "3", "3", "7"]
