def test_scenario1(values):
"""Test JIN instruction functionality."""
chip_test = Processor()
chip_base = Processor()
pcb = values[0]
rp = values[1]
reg = rp * 2
rp_content = values[2]
rpm = Processor.convert_decimal_to_n_bit_slices(8, 4, rp_content,
'd')[1] # noqa
rpl = Processor.convert_decimal_to_n_bit_slices(8, 4, rp_content,
'd')[0] # noqa
pce = values[3]
# Set chip to initial status
chip_test.PROGRAM_COUNTER = pcb
chip_test.REGISTERS[reg] = rpl
chip_test.REGISTERS[reg + 1] = rpm
# Perform the instruction under test:
Processor.jin(chip_test, rp)
# Simulate conditions at end of instruction in base chip
chip_base.PROGRAM_COUNTER = pce
chip_base.REGISTERS[reg] = rpl
chip_base.REGISTERS[reg + 1] = rpm
# Make assertions that the base chip is now at the same state as
# the test chip which has been operated on by the instruction under test.
assert chip_test.read_program_counter() == chip_base.read_program_counter()
# Pickling each chip and comparing will show equality or not.
assert pickle.dumps(chip_test) == pickle.dumps(chip_base)
def test_scenario2(values):
"""Test JIN instruction failure."""
chip_test = Processor()
pcb = values[0]
rp = values[1]
reg = rp * 2
rp_content = values[2]
rpm = Processor.convert_decimal_to_n_bit_slices(8, 4, rp_content,
'd')[1] # noqa
rpl = Processor.convert_decimal_to_n_bit_slices(8, 4, rp_content,
'd')[0] # noqa
pce = values[3]
# Simulate conditions at START of operation in base chip
# chip should have not had any changes as the operations will fail
chip_test.PROGRAM_COUNTER = pcb
chip_test.REGISTERS[reg] = rpl
chip_test.REGISTERS[reg + 1] = rpm
# Simulate conditions at END of operation in test chip
# chip should have not had any changes as the operations will fail
# N/A
# attempting to use an invalid address
with pytest.raises(Exception) as e:
assert Processor.jin(chip_test, rp)
assert str(e.value) == 'Program counter attempted to be set to ' + str(
pce) # noqa
assert e.type == ProgramCounterOutOfBounds
