def test_smbus_io():
bus = MockSMBus(1)
bus.write_i2c_block_data(0x00, 0x00, [0xff, 0x00, 0xff])
assert bus.read_i2c_block_data(0x00, 0x00, 3) == [0xff, 0x00, 0xff]
def test_smbus_default_regs():
bus = MockSMBus(1, default_registers={0x60: 0x99, 0x88: 0x51})
assert bus.read_i2c_block_data(0x00, 0x60, 1) == [0x99]
assert bus.read_i2c_block_data(0x00, 0x88, 1) == [0x51]
