BIND 10 #859: Search cache for lowest reachable delegation

[BIND 10 Development]

#859: Search cache for lowest reachable delegation
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                   Reporter:         |                 Owner:  zhanglikun
  vorner                             |                Status:  reviewing
                       Type:         |             Milestone:
  defect                             |  Sprint-20110503
                   Priority:  major  |            Resolution:
                  Component:         |             Sensitive:  0
  Unclassified                       |           Sub-Project:  DNS
                   Keywords:         |  Estimated Difficulty:  0.0
            Defect Severity:  N/A    |           Total Hours:  0
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Changes (by vorner):

 * owner:  vorner => zhanglikun


Comment:

 Hello

 About the `foundAddress`, actually, it was needed. The break would jump
 out of the internal for cycle, containing directly by the if. Anyway,
 current version doesn't need it, since there's a return.

 The mock class was removed.

 I split if off into a separate function (I noticed it's complicated enough
 to deserve it's own function anyway, but I named it simply
 `deepestDelegation`) and it is tested. But I left the original test there
 as well and added a comment that explains the way the test works. Is it OK
 now?

 Thanks

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Ticket URL: <http://bind10.isc.org/ticket/859#comment:4>
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