Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/target-has-keycertsign-but-not-ca/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/target-has-keycertsign-but-not-ca/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/generate-target-has-keycertsign-but-not-ca.py b/net/data/verify_certificate_chain_unittest/target-has-keycertsign-but-not-ca/generate-chains.py
similarity index 68%
rename from net/data/verify_certificate_chain_unittest/generate-target-has-keycertsign-but-not-ca.py
rename to net/data/verify_certificate_chain_unittest/target-has-keycertsign-but-not-ca/generate-chains.py
index 7d361dffa3a95ffed201bd7ad5489b8b13e12556..01f4509d2466d9177135e5bc27112d81c2c7c45b 100755
--- a/net/data/verify_certificate_chain_unittest/generate-target-has-keycertsign-but-not-ca.py
+++ b/net/data/verify_certificate_chain_unittest/target-has-keycertsign-but-not-ca/generate-chains.py
@@ -8,6 +8,9 @@ certificate that is not a CA, and yet has the keyCertSign bit set. Verification
 is expected to fail, since keyCertSign should only be asserted when CA is
 true."""
 
+import sys
+sys.path += ['..']
+
 import common
 
 # Self-signed root certificate (used as trust anchor).
@@ -21,16 +24,5 @@ target = common.create_end_entity_certificate('Target', intermediate)
 target.get_extensions().set_property('keyUsage',
     'critical,digitalSignature,keyEncipherment,keyCertSign')
 
-
-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=0 (CN=Target) -----
-ERROR: Target certificate looks like a CA but does not set all CA properties
-
-"""
-
-common.write_test_file(__doc__, chain, trusted, time, key_purpose,
-                       verify_result, errors)
+chain = [target, intermediate, root]
+common.write_chain(__doc__, chain, 'chain.pem')