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from chrysacase import ChrysalideTestCase
from gi._constants import TYPE_INVALID
from pychrysalide.analysis.scan import ScanExpression
from pychrysalide.analysis.scan import ScanOptions
from pychrysalide.glibext import ComparableItem
class TestRostPythonAPI(ChrysalideTestCase):
"""TestCase for the ROST Python API."""
def testEmptyOptions(self):
"""Check default scan options."""
ops = ScanOptions()
self.assertEqual(ops.backend_for_data, TYPE_INVALID)
def testDirectInstancesOfExpression(self):
"""Reject direct instances of ROST expressions."""
with self.assertRaisesRegex(RuntimeError, 'pychrysalide.analysis.scan.ScanExpression is an abstract class'):
e = ScanExpression()
def testBooleanComparison(self):
"""Compare custom scan expressions."""
class StrLenExpr(ScanExpression):
def __init__(self, value):
super().__init__(ScanExpression.ExprValueType.STRING)
self._value = value
def _cmp_rich(self, other, op):
if op == ComparableItem.RichCmpOperation.EQ:
return len(self._value) == len(other._value)
e0 = StrLenExpr('00000000000')
e1 = StrLenExpr('00000000000')
e2 = StrLenExpr('000000000000000000000000000')
self.assertTrue(e0 == e1)
# !?
# Python teste e0 != e1 (non implémenté), puis e1 != e0 (pareil) et en déduit une différence !
# self.assertFalse(e0 != e1)
self.assertFalse(e0 == e2)
# TypeError: '<' not supported between instances of 'StrLenExpr' and 'StrLenExpr'
with self.assertRaisesRegex(TypeError, '\'<\' not supported between instances'):
self.assertTrue(e0 < e1)
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