[Parser Testing] Change mock types to allow for easier testing of parser

[mm4rks]

Proposal

In the lifter we use type() to determine the correct handler for the given instruction. However, this prevents us to use mock classes (e.g., unittest.mock.Mock) to test parser functionality: instructions can't be lifted.

Changing handler selection in the lifter, to select by expression.__class__ would allow lifting of mocked instructions.

Since we add instruction patching (jmp / edges) to the parser, proper testing would be nice :)

Approach

     def lift(self, expression: T, **kwargs) -> V:
         """Lift the given expression based on the registered handlers."""
-        handler = self.HANDLERS.get(type(expression), self.lift_unknown)
+        handler = self.HANDLERS.get(expression.__class__, self.lift_unknown)
         return handler(expression)

use unittest.mock.Mock and simplify tests for the parser.

[mm4rks]

/cib

[github-actions[bot]]

Branch issue-300-_Parser_Testing_Change_mock_types_to_allow_for_easier_testing_of_parser created!