[MacPorts] #69866: Built-in tests should not run pre-test and post-test blocks

[MacPorts]

#69866: Built-in tests should not run pre-test and post-test blocks
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  Reporter:  ryandesign  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  base        |    Version:  2.9.3
Resolution:              |   Keywords:
      Port:              |
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Comment (by ryandesign):

 The fact that it happens in CI is sufficient justification to fix it.

 And, great: moving the built-in tests to a separate phase will not only
 fix the CI test failures but will also provide the official interface to
 run the built-in tests and eliminate the need for a hack.

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Ticket URL: <https://trac.macports.org/ticket/69866#comment:2>
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