BIND 10 #1507: Extract the common dummy classes for python (module) tests

[BIND 10 Development]

#1507: Extract the common dummy classes for python (module) tests
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                   Reporter:  jelte  |                 Owner:
                       Type:  task   |                Status:  new
                   Priority:  major  |             Milestone:  Next-Sprint-
                  Component:         |  Proposed
  Unclassified                       |            Resolution:
                   Keywords:         |             Sensitive:  0
            Defect Severity:  N/A    |           Sub-Project:  DNS
Feature Depending on Ticket:         |  Estimated Difficulty:  0
        Add Hours to Ticket:  0      |           Total Hours:  0
                  Internal?:  0      |
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Changes (by jelte):

 * milestone:  New Tasks => Next-Sprint-Proposed


Comment:

 Perhaps it should be a separate tasks, but we repeat a specific pattern
 quite often; we provide a dummy class and then have a test that only
 checks whether a certain method has been called on that class.

 I've been playing around a bit with python, and wrote a little call-
 counting (and optional proxy) class; you can get it at
 http://tjeb.nl/opendir/callcounter.py

 (something like) this would be directly usable as a mock class where we
 currently don't require any specific behaviour (for instance for tests
 where we only check that a certain method is called in a piece of code,
 and said method returns None, or it's return value isn't used). And
 probably be used quite easily as a proxy when necessary.

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Ticket URL: <http://bind10.isc.org/ticket/1507#comment:1>
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