Documentation for DetachedMockFactory

[AndreasTu]

Added a new section "Create Mock Objects outside Specifications" in the interaction_based_testing.adoc to document usage of the DetachedMockFactory. Added reference to the new section to AutoAttach.

This fixes #1057

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (dd798eb) 80.44% compared to head (2cbab0a) 80.44%.

❗ Current head 2cbab0a differs from pull request most recent head a0ebad7. Consider uploading reports for the commit a0ebad7 to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1728   +/-   ##
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  Coverage     80.44%   80.44%           
  Complexity     4336     4336           
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  Files           441      441           
  Lines         13529    13529           
  Branches       1705     1705           
=========================================
  Hits          10884    10884           
  Misses         2007     2007           
  Partials        638      638           

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[kriegaex]

@AndreasTu, thanks for taking the initiative here. I am not the type of person who comments in a code review, kinda remote-controlling and micro-managing my peers by telling the exactly which changes I suggest. I would rather opt to commit on top of your changes and collaborate with you that way. Would you mind giving me commit rights in your forked repo? Or would you rather have me create a forked PM, also on top of your changes? I am not a committer here, so the "Allow edits and access to secrets by maintainers" option does not have any effect on me, even though you might have activated it.

What I would change:

• Adjust the wording a bit.
• Provide a more insightful code example, showing users not just how they can use detached mocks, but also why they would want to do that in the first place, when outside of Spring or Guice.

[kriegaex]

Sorry for being slow, @AndreasTu. I had noticed that you added me as a committer on your fork and started working on this PR a couple of days ago, but then was busy otherwise. Just now when trying to push my commit, I realised that I had to rebase first and that in the meantime you had also added an example for using a custom default response. My example is somewhat more verbose, also trying to create a sense of how to use it with a class under test and an injected mock. I also have an example for @AutoAttach. I hope that my changes are not too invasive. I think that your original PR's intent is still intact.

@leonard84, DYT it is OK to quote more code in the Spock manual? I felt like some snippets out of context might not do a proper job at explaining how to use detached mocks.

[leonard84]

looking good, some things to refine