def test_i32_operand():
assert parse_operand(I32(0x45671234)) == Immediate(0x45671234, 4)
def test_none_returns_inherent_addressing_mode():
operand = None
r = parse_operand(operand)
assert isinstance(r, Inherent)
def test_i16_operand():
assert parse_operand(I16(-4567)) == Immediate(60969, 2)
def test_set_with_three_byte_value_raises_value_error():
address = 0x010000
operand = {address}
with raises(ValueError):
parse_operand(operand)
def test_set_with_string_raises_type_error():
address = 'hello'
operand = {address}
with raises(TypeError):
parse_operand(operand)
def test_empty_set_raises_value_error():
operand = set()
with raises(ValueError):
parse_operand(operand)
def test_set_with_two_byte_value_returns_extended_direct_addressing_mode():
operand = {0x1C48}
r = parse_operand(operand)
assert isinstance(r, ExtendedDirect)
def test_unsupported_tuple_items_raises_type_error():
with raises(TypeError):
parse_operand(("some", "strings"))
def test_unsupported_tuple_indexed_offset_raises_type_error():
with raises(TypeError):
parse_operand({"some": "strings"})
def test_empty_bytes_operand_raises_value_error():
with raises(ValueError):
assert parse_operand(b'')
def test_multi_bytes_operand_raises_value_error(b):
with raises(ValueError):
assert parse_operand(b)
def test_bytes_operand_gives_immediate_value(b):
assert parse_operand(b) == Immediate(b[0], 1)
def test_value_stored_in_immediate_addressing_mode():
operand = 0x42
r = parse_operand(operand)
assert r.value == operand
def test_bare_integer_returns_immediate_addressing_mode():
operand = 0x30
r = parse_operand(operand)
assert isinstance(r, Immediate)
def test_address_stored_in_page_direct_addressing_mode():
address = 0x78
operand = {address}
r = parse_operand(operand)
assert r.address == address
def test_unsupported_tuple_indexed_base_raises_type_error():
with raises(TypeError):
parse_operand({2: "strings"})
def test_set_with_negative_address_raises_value_error():
operand = {-1}
with raises(ValueError):
parse_operand(operand)
def test_u8_operand():
assert parse_operand(U8(42)) == Immediate(42, 1)
def test_set_with_multiple_items_raises_value_error():
operand = {0x1C, 0xD5}
with raises(ValueError):
parse_operand(operand)
def test_u16_operand():
assert parse_operand(U16(0x4567)) == Immediate(0x4567, 2)
def test_address_stored_in_extended_direct_addressing_mode():
address = 0xD58A
operand = {address}
r = parse_operand(operand)
assert r.address == address
def test_set_with_one_byte_value_returns_page_direct_addressing_mode():
operand = {0x30}
r = parse_operand(operand)
assert isinstance(r, PageDirect)
def test_set_with_label_returns_extended_direct_addressing_mode():
address = Label('loop')
operand = {address}
r = parse_operand(operand)
assert r.address == address
def test_i8_operand():
assert parse_operand(I8(-42)) == Immediate(214, 1)
def test_list_causes_indirection_for_integer_address():
address = 0x3560
operand = [{address}]
r = parse_operand(operand)
assert isinstance(r, ExtendedIndirect)
def test_list_causes_indirection_for_label():
address = Label('loop')
operand = [{address}]
r = parse_operand(operand)
assert isinstance(r, ExtendedIndirect)