Refactor how net/data/verify_certificate_chain_unittest/*

net/data/verify_certificate_chain_unittest/target-signed-with-md5/generate-chains.py

Index: net/data/verify_certificate_chain_unittest/target-signed-with-md5/generate-chains.py
diff --git a/net/data/verify_certificate_chain_unittest/generate-target-signed-with-md5.py b/net/data/verify_certificate_chain_unittest/target-signed-with-md5/generate-chains.py
similarity index 61%
rename from net/data/verify_certificate_chain_unittest/generate-target-signed-with-md5.py
rename to net/data/verify_certificate_chain_unittest/target-signed-with-md5/generate-chains.py
index 6b9adc0e865b0984eeeb45261cab0263fe5a1710..0a4d747846cbdd7c190ca14ac14eecc9467a1df5 100755
--- a/net/data/verify_certificate_chain_unittest/generate-target-signed-with-md5.py
+++ b/net/data/verify_certificate_chain_unittest/target-signed-with-md5/generate-chains.py
@@ -6,6 +6,9 @@
 """Certificate chain with an intermediate that uses MD5 to sign the target
 certificate. This is expected to fail because MD5 is too weak."""
 
+import sys
+sys.path += ['..']
+
 import common
 
 # Self-signed root certificate (used as trust anchor).
@@ -18,16 +21,5 @@ intermediate = common.create_intermediate_certificate('Intermediate', root)
 target = common.create_end_entity_certificate('Target', intermediate)
 target.set_signature_hash('md5')
 
-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: Unacceptable signature algorithm
-ERROR: VerifySignedData failed
-
-"""
-
-common.write_test_file(__doc__, chain, trusted, time, key_purpose,
-                       verify_result, errors)
+chain = [target, intermediate, root]
+common.write_chain(__doc__, chain, 'chain.pem')