def METHOD_NAME(self):
    src = """
    x = 10
    print(x)
    x = 10
    """
    mod = astroid.parse(src)
    mod.accept(CFGVisitor())
    assign_1, *_ = mod.nodes_of_class(nodes.Assign)
    with self.assertNoMessages():
        self.checker.visit_module(mod)
        self.checker.visit_assign(assign_1)