Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/intermediate-unknown-critical-extension/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/intermediate-unknown-critical-extension/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/generate-intermediate-unknown-critical-extension.py b/net/data/verify_certificate_chain_unittest/intermediate-unknown-critical-extension/generate-chains.py
similarity index 68%
rename from net/data/verify_certificate_chain_unittest/generate-intermediate-unknown-critical-extension.py
rename to net/data/verify_certificate_chain_unittest/intermediate-unknown-critical-extension/generate-chains.py
index 357cd90639a0ad89b5d0f407b806f0542962097e..f7863dfdefe7960f533fec96d5df0ff3744e12ff 100755
--- a/net/data/verify_certificate_chain_unittest/generate-intermediate-unknown-critical-extension.py
+++ b/net/data/verify_certificate_chain_unittest/intermediate-unknown-critical-extension/generate-chains.py
@@ -8,6 +8,9 @@ has an unknown X.509v3 extension (OID=1.2.3.4) that is marked as critical.
 Verifying this certificate chain is expected to fail because there is an
 unrecognized critical extension."""
 
+import sys
+sys.path += ['..']
+
 import common
 
 # Self-signed root certificate (used as trust anchor).
@@ -21,17 +24,5 @@ intermediate.get_extensions().add_property('1.2.3.4',
 # Target certificate.
 target = common.create_end_entity_certificate('Target', intermediate)
 
-chain = [target, intermediate]
-trusted = common.TrustAnchor(root, constrained=False)
-time = common.DEFAULT_TIME
-key_purpose = common.DEFAULT_KEY_PURPOSE
-verify_result = False
-errors = """----- Certificate i=1 (CN=Intermediate) -----
-ERROR: Unconsumed critical extension
-  oid: 2A0304
-  value: 01020304
-
-"""
-
-common.write_test_file(__doc__, chain, trusted, time, key_purpose,
-                       verify_result, errors)
+chain = [target, intermediate, root]
+common.write_chain(__doc__, chain, 'chain.pem')