File: TestCppCRTP.py

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"""
A test for the curiously recurring template pattern (or CRTP).

Note that the derived class is referenced directly from the parent class in the
test. If this fails then there is a good chance that LLDB tried to eagerly
resolve the definition of the derived class while constructing the base class.
"""

import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil


class TestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    @no_debug_info_test
    def test(self):
        self.build()
        self.createTestTarget()

        # Try using the class in the expression evaluator.
        self.expect_expr(
            "derived",
            result_type="Derived",
            result_children=[
                ValueCheck(name="Base<Derived>"),
                ValueCheck(name="member", value="0"),
            ],
        )

        # Try accessing the members of the class and base class.
        self.expect_expr("derived.pointer", result_type="Derived *")
        self.expect_expr("derived.member", result_type="int", result_value="0")