Add a leakcheck test for CRL.get_revoked
diff --git a/leakcheck/crypto.py b/leakcheck/crypto.py
index 6a9af92..d534c57 100644
--- a/leakcheck/crypto.py
+++ b/leakcheck/crypto.py
@@ -2,9 +2,10 @@
 # See LICENSE for details.
 
 import sys
+import datetime
 
 from OpenSSL.crypto import (
-    FILETYPE_PEM, TYPE_DSA, Error, PKey, X509, load_privatekey)
+    FILETYPE_PEM, TYPE_DSA, Error, PKey, X509, load_privatekey, CRL, Revoked)
 
 
 
@@ -101,6 +102,27 @@
                 pass
 
 
+
+class Checker_CRL_get_revoked(BaseChecker):
+    """
+    Leak checks for L{CRL.get_revoked}.
+    """
+    def check_get_revoked(self):
+        """
+        Create a CRL object with 1000 Revoked objects, then call the
+        get_revoked method repeatedly.
+        """
+        crl = CRL()
+        for serial in xrange(1000):
+            revoked = Revoked()
+            revoked.set_serial(str(serial))
+            revoked.set_rev_date(datetime.datetime.utcnow().strftime('%Y%m%d%H%M%SZ'))
+            crl.add_revoked(revoked)
+        for i in xrange(self.iterations):
+            crl.get_revoked()
+
+
+
 def vmsize():
     return [x for x in file('/proc/self/status').readlines() if 'VmSize' in x]