def test_endianess(self):
"""Test, if right functions are assigned."""
assert self.memory.encode == big_endian_encode
assert self.memory.decode == big_endian_decode
self.memory = AbstractMemory(BYTE_SIZE, endianess="big")
assert self.memory.encode == big_endian_encode
assert self.memory.decode == big_endian_decode
self.memory = AbstractMemory(BYTE_SIZE, endianess="little")
assert self.memory.encode == little_endian_encode
assert self.memory.decode == little_endian_decode
with raises(ValueError):
AbstractMemory(BYTE_SIZE, endianess="wrong_endianess")
def test_init(self):
"""Test if we can predefine addresses."""
self.memory = AbstractMemory(BYTE_SIZE, addresses={0: 5, 'R1': 6})
assert 0 in self.memory
assert 1 not in self.memory
assert -1 not in self.memory
assert 'R1' in self.memory
assert 'R2' not in self.memory
def setup(self):
"""Init state."""
self.memory = AbstractMemory(BYTE_SIZE)
assert self.memory.word_size == BYTE_SIZE
class TestAbstractMemory:
"""Test case for abstract memory class."""
memory = None
def setup(self):
"""Init state."""
self.memory = AbstractMemory(BYTE_SIZE)
assert self.memory.word_size == BYTE_SIZE
def test_check_word_size(self):
"""Word size check is a first part of information protection."""
for i in range(2 ** self.memory.word_size):
self.memory.check_word_size(i)
for i in range(2 ** self.memory.word_size, 2 * 2 ** self.memory.word_size):
with raises(ValueError):
self.memory.check_word_size(i)
for i in range(-2 ** self.memory.word_size, 0):
with raises(ValueError):
self.memory.check_word_size(i)
def test_check_bits_count(self):
"""Should runs without exception, when size % word_size == 0."""
for i in range(1, self.memory.word_size * 10):
if i % self.memory.word_size == 0:
self.memory.check_bits_count(0, i)
else:
with raises(KeyError):
self.memory.check_bits_count(0, i)
def test_setitem(self):
"""Test that setitem is not implemented."""
with raises(NotImplementedError):
self.memory[0] = 0
with raises(NotImplementedError):
self.memory['R1'] = 0
def test_init(self):
"""Test if we can predefine addresses."""
self.memory = AbstractMemory(BYTE_SIZE, addresses={0: 5, 'R1': 6})
assert 0 in self.memory
assert 1 not in self.memory
assert -1 not in self.memory
assert 'R1' in self.memory
assert 'R2' not in self.memory
def test_fetch(self):
"""Test that fetch is defined."""
with raises(NotImplementedError):
self.memory.fetch(0, BYTE_SIZE)
def test_put(self):
"""Test that put is defined."""
with raises(NotImplementedError):
self.memory.put(0, 15, BYTE_SIZE)
def test_endianess(self):
"""Test, if right functions are assigned."""
assert self.memory.encode == big_endian_encode
assert self.memory.decode == big_endian_decode
self.memory = AbstractMemory(BYTE_SIZE, endianess="big")
assert self.memory.encode == big_endian_encode
assert self.memory.decode == big_endian_decode
self.memory = AbstractMemory(BYTE_SIZE, endianess="little")
assert self.memory.encode == little_endian_encode
assert self.memory.decode == little_endian_decode
with raises(ValueError):
AbstractMemory(BYTE_SIZE, endianess="wrong_endianess")
