Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/incorrect-trust-anchor/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/incorrect-trust-anchor/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/generate-incorrect-trust-anchor.py b/net/data/verify_certificate_chain_unittest/incorrect-trust-anchor/generate-chains.py
similarity index 64%
rename from net/data/verify_certificate_chain_unittest/generate-incorrect-trust-anchor.py
rename to net/data/verify_certificate_chain_unittest/incorrect-trust-anchor/generate-chains.py
index 1d6eb5b028f94e761a572a6d804c06b3c4499376..33482964e1e7de522e9d7bb193f71cfffd224f9b 100755
--- a/net/data/verify_certificate_chain_unittest/generate-incorrect-trust-anchor.py
+++ b/net/data/verify_certificate_chain_unittest/incorrect-trust-anchor/generate-chains.py
@@ -7,6 +7,9 @@
 incorrect (neither subject nor signature matches). Verification is expected to
 fail."""
 
+import sys
+sys.path += ['..']
+
 import common
 
 # Self-signed root certificate, which is NOT saved as the trust anchor.
@@ -22,17 +25,5 @@ target = common.create_end_entity_certificate('Target', intermediate)
 # anchor.
 bogus_root = common.create_self_signed_root_certificate('BogusRoot')
 
-chain = [target, intermediate]
-trusted = common.TrustAnchor(bogus_root, constrained=False)
-time = common.DEFAULT_TIME
-key_purpose = common.DEFAULT_KEY_PURPOSE
-verify_result = False
-errors = """----- Certificate i=1 (CN=Intermediate) -----
-ERROR: Signature verification failed
-ERROR: VerifySignedData failed
-ERROR: subject does not match issuer
-
-"""
-
-common.write_test_file(__doc__, chain, trusted, time, key_purpose,
-                       verify_result, errors)
+chain = [target, intermediate, bogus_root]
+common.write_chain(__doc__, chain, 'chain.pem')