Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/violates-basic-constraints-pathlen-0/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/violates-basic-constraints-pathlen-0/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/generate-violates-basic-constraints-pathlen-0.py b/net/data/verify_certificate_chain_unittest/violates-basic-constraints-pathlen-0/generate-chains.py
similarity index 74%
rename from net/data/verify_certificate_chain_unittest/generate-violates-basic-constraints-pathlen-0.py
rename to net/data/verify_certificate_chain_unittest/violates-basic-constraints-pathlen-0/generate-chains.py
index 30e375a0f49b34b48d1fa8dbd6e2fcd6f43fed0e..e8092f7a3e4c0abdf40ca78db7f676aa26626052 100755
--- a/net/data/verify_certificate_chain_unittest/generate-violates-basic-constraints-pathlen-0.py
+++ b/net/data/verify_certificate_chain_unittest/violates-basic-constraints-pathlen-0/generate-chains.py
@@ -7,6 +7,9 @@
 constraints path length of 0, so it is a violation for it to have a subordinate
 intermediate."""
 
+import sys
+sys.path += ['..']
+
 import common
 
 # Self-signed root certificate (used as trust anchor).
@@ -26,15 +29,5 @@ intermediate2.get_extensions().set_property('basicConstraints',
 # Target certificate.
 target = common.create_end_entity_certificate('Target', intermediate2)
 
-chain = [target, intermediate2, intermediate1]
-trusted = common.TrustAnchor(root, constrained=False)
-time = common.DEFAULT_TIME
-key_purpose = common.DEFAULT_KEY_PURPOSE
-verify_result = False
-errors = """----- Certificate i=1 (CN=Intermediate2) -----
-ERROR: max_path_length reached
-
-"""
-
-common.write_test_file(__doc__, chain, trusted, time, key_purpose,
-                       verify_result, errors)
+chain = [target, intermediate2, intermediate1, root]
+common.write_chain(__doc__, chain, 'chain.pem')