return self._tc.create_structure_field_class()
+class OptionFieldClassTestCase(unittest.TestCase):
+ def setUp(self):
+ self._tc = get_default_trace_class()
+ self._content_fc = self._tc.create_signed_integer_field_class(23)
+ self._tag_fc = self._tc.create_bool_field_class()
+
+ def test_create_default(self):
+ fc = self._tc.create_option_field_class(self._content_fc)
+ self.assertEqual(fc.field_class.addr, self._content_fc.addr)
+ self.assertIsNone(fc.selector_field_path, None)
+
+ def _create_field_class_for_field_path_test(self):
+ fc = self._tc.create_option_field_class(self._content_fc, self._tag_fc)
+
+ foo_fc = self._tc.create_real_field_class()
+ bar_fc = self._tc.create_string_field_class()
+ baz_fc = self._tc.create_string_field_class()
+
+ inner_struct_fc = self._tc.create_structure_field_class()
+ inner_struct_fc.append_member('bar', bar_fc)
+ inner_struct_fc.append_member('baz', baz_fc)
+ inner_struct_fc.append_member('tag', self._tag_fc)
+ inner_struct_fc.append_member('opt', fc)
+
+ opt_struct_array_fc = self._tc.create_option_field_class(inner_struct_fc)
+
+ outer_struct_fc = self._tc.create_structure_field_class()
+ outer_struct_fc.append_member('foo', foo_fc)
+ outer_struct_fc.append_member('inner_opt', opt_struct_array_fc)
+
+ # The path to the selector field class is resolved when the
+ # option field class is actually used, for example in a packet
+ # context.
+ self._tc.create_stream_class(
+ packet_context_field_class=outer_struct_fc, supports_packets=True
+ )
+
+ return fc
+
+ def test_field_path_len(self):
+ fc = self._create_field_class_for_field_path_test()
+ self.assertEqual(len(fc.selector_field_path), 3)
+
+ def test_field_path_iter(self):
+ fc = self._create_field_class_for_field_path_test()
+ path_items = list(fc.selector_field_path)
+
+ self.assertEqual(len(path_items), 3)
+
+ self.assertIsInstance(path_items[0], bt2._IndexFieldPathItem)
+ self.assertEqual(path_items[0].index, 1)
+
+ self.assertIsInstance(path_items[1], bt2._CurrentOptionContentFieldPathItem)
+
+ self.assertIsInstance(path_items[2], bt2._IndexFieldPathItem)
+ self.assertEqual(path_items[2].index, 2)
+
+ def test_field_path_root_scope(self):
+ fc = self._create_field_class_for_field_path_test()
+ self.assertEqual(
+ fc.selector_field_path.root_scope, bt2.FieldPathScope.PACKET_CONTEXT
+ )
+
+ def test_create_invalid_field_class(self):
+ with self.assertRaises(TypeError):
+ self._tc.create_option_field_class(object())
+
+ def test_create_invalid_selector_type(self):
+ with self.assertRaises(TypeError):
+ self._tc.create_option_field_class(self._content_fc, 17)
+
+
class VariantFieldClassWithoutSelectorTestCase(
_TestElementContainer, unittest.TestCase
):