[GHC] #11980: Testsuite: run each test in its own /tmp directory, after copying required files

[GHC]

#11980: Testsuite: run each test in its own /tmp directory, after copying required
files
-------------------------------------+-------------------------------------
        Reporter:  thomie            |                Owner:  thomie
            Type:  task              |               Status:  patch
        Priority:  normal            |            Milestone:  8.2.1
       Component:  Test Suite        |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D1187
       Wiki Page:                    |
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Comment (by Thomas Miedema <thomasmiedema@…>):

 In [changeset:"3f3dc23ea64573a12e2f4bfdaaa3aa536ad3188d/ghc" 3f3dc23/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="3f3dc23ea64573a12e2f4bfdaaa3aa536ad3188d"
 Testsuite: run tests in /tmp after copying required files

 Major change to the testsuite driver.

 For each TEST:
    * create a directory `<testdir>` inside `/tmp`.

    * link/copy all source files that the test needs into `<testdir>`.

    * run the test inside `<testdir>`.

    * delete `<testdir>`

 Extra files are (temporarily) tracked in
 `testsuite/driver/extra_files.py`, but can also be specified using the
 `extra_files` setup function.

 Differential Revision: https://phabricator.haskell.org/D1187

 Reviewed by: Rufflewind, bgamari

 Trac: #11980
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11980#comment:2>
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