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import pychrysalide
from chrysacase import ChrysalideTestCase
from pychrysalide.arch import ArchOperand
from pychrysalide.glibext import HashableObject, StringBuilder
class TestOperand(ChrysalideTestCase):
"""TestCase for arch.ArchOperand."""
def testAbstractClass(self):
"""Forbid operand class instance."""
with self.assertRaisesRegex(RuntimeError, 'pychrysalide.arch.ArchOperand is an abstract class'):
pc = ArchOperand()
def testStringBuilderMethodsOverriding(self):
"""Override the StringBuilder interface provided by native implementations."""
class MyOperand(ArchOperand, StringBuilder):
def __init__(self):
super().__init__(self)
def _to_string(self, flags=0):
return 'my-op'
op = MyOperand()
self.assertEqual(op.to_string(), 'my-op')
self.assertEqual(str(op), 'my-op')
self.assertEqual(f'{op}', 'my-op')
def testHashableObjectMethods(self):
"""Test the HashableObject methods implemantation for operands."""
# Pas d'implementation de particulière de HashableObject,
# c'est donc la définition d'implémentation d'ArchOperand
# qui s'applique.
# Spécificité de l'implémentation GLib : hash 32 bits
class DefaultHashableOperand(ArchOperand):
pass
def_op = DefaultHashableOperand()
h = hash(def_op)
self.assertEqual(0, h & ~0xffffffff)
# Définition particulière de l'opérande, sur la base de
# l'implémentation parente.
class CustomHashableOperand(ArchOperand, HashableObject):
def _hash(self):
h = self.parent_hash()
h &= ~0xffff
return h
cust_op = CustomHashableOperand()
h = hash(cust_op)
self.assertEqual(0, h & 0xffff)
self.assertEqual(0, h & ~0xffffffff)
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