Callback function does not work

In reply to chr_sue:

In reply to UVM_LOVE:
A compile or elaborate error happens only if there are syntax errors. It looks like your test has not been constructed because it is not a component.
I do not see how you are starting your test.

Sir, I do start with run_test(“apb_basic_test”);
Object was constructed

cb_test1 = apb_cb_test1::type_id::create("cb_test1",this);

in test.

I’m so confused it.