load_chain
if (!TEST_ptr(chain = load_chain(f, ncert))) {
static STACK_OF(X509) *load_chain(BIO *fp, int nelem)
|| !TEST_true(load_chain("ca-cert.pem", NULL, NULL, chain))
|| !TEST_true(load_chain("root-cert.pem", NULL, NULL, chain))
|| !TEST_true(load_chain("p256-ee-rsa-ca-cert.pem", NULL,
|| !TEST_true(load_chain("p256-ee-rsa-ca-key.pem", &pkey,