build(tests): fix tests

Refs: #131

Author: piraz

automatoes/crypto.py

@@ -228,8 +228,15 @@ def load_pem_certificate(data):
     return x509.load_pem_x509_certificate(data, default_backend())
 
 
+def get_issuer_certificate_domain_name(cert):
+    for cn in cert.subject:
+        return cn.value
+
+
 def get_certificate_domain_name(cert):
-    return cert.subject.get_attributes_for_oid(NameOID.COMMON_NAME)[0].value
+    for ext in cert.extensions:
+        if isinstance(ext.value, SubjectAlternativeName):
+            return ext.value.get_values_for_type(DNSName)[0]
 
 
 def get_certificate_domains(cert):

tests/features/steps/acme_v2_steps.py

@@ -18,7 +18,8 @@
 from behave import given, when, then
 from automatoes.crypto import (create_csr, generate_rsa_key,
                                strip_certificates, load_pem_certificate,
-                               get_certificate_domain_name)
+                               get_certificate_domain_name,
+                               get_issuer_certificate_domain_name)
 from automatoes.model import Account
 from cartola import security
 
@@ -169,7 +170,7 @@ def step_order_has_a_certificate_with_domain(context, what_domain):
     )
     issuer_certificate = load_pem_certificate(certificates[1])
     context.tester.assertTrue(
-        get_certificate_domain_name(
+        get_issuer_certificate_domain_name(
             issuer_certificate
         ).startswith("Pebble Intermediate CA")
     )