test_copy
test_copy(context, krb5_cc_type_file, krb5_cc_type_file);
test_copy(context, krb5_cc_type_memory, krb5_cc_type_memory);
test_copy(context, krb5_cc_type_file, krb5_cc_type_memory);
test_copy(context, krb5_cc_type_memory, krb5_cc_type_file);
test_copy(context, krb5_cc_type_scc, krb5_cc_type_file);
test_copy(context, krb5_cc_type_file, krb5_cc_type_scc);
test_copy(context, krb5_cc_type_scc, krb5_cc_type_memory);
test_copy(context, krb5_cc_type_memory, krb5_cc_type_scc);
static tf_copy_t test_copy;
.tf_copy = test_copy,