def METHOD_NAME(self):
    src = """
    y = 5
    while y > 5:
        x = 10
        print(x)
    """
    mod = astroid.parse(src)
    mod.accept(CFGVisitor())
    _, assign_x, *_ = mod.nodes_of_class(nodes.Assign)
    self.checker.visit_module(mod)
    with self.assertNoMessages():
        self.checker.visit_assign(assign_x)