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from chrysacase import ChrysalideTestCase
from pychrysalide.analysis.contents import MemoryContent
from pychrysalide.analysis.scan import ContentScanner
from pychrysalide.analysis.scan import ScanOptions
from pychrysalide.analysis.scan.patterns.backends import AcismBackend
class RostTestClass(ChrysalideTestCase):
"""TestCase for analysis.scan.ScanExpression."""
@classmethod
def setUpClass(cls):
super(RostTestClass, cls).setUpClass()
cls._options = ScanOptions()
cls._options.backend_for_data = AcismBackend
cls._empty_content = MemoryContent(b'')
def _validate_rule_result(self, rule, content, expected):
"""Check for scan success or failure."""
scanner = ContentScanner(rule)
ctx = scanner.analyze(self._options, content)
self.assertIsNotNone(ctx)
if expected:
self.assertTrue(ctx.has_match_for_rule('test'))
else:
self.assertFalse(ctx.has_match_for_rule('test'))
return scanner, ctx
def check_rule_success(self, rule, content = None):
"""Check for scan success."""
if content is None:
content = self._empty_content
self._validate_rule_result(rule, content, True)
def check_rule_failure(self, rule, content = None):
"""Check for scan failure."""
if content is None:
content = self._empty_content
self._validate_rule_result(rule, content, False)
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