[ET Trac] [Einstein Toolkit] #1280: include warning in "No files created in test directory" test system output if no extensions were registered

[Einstein Toolkit]

#1280: include warning in "No files created in test directory" test system output
if no extensions were registered
-------------------------+--------------------------------------------------
 Reporter:  rhaas        |       Owner:     
     Type:  enhancement  |      Status:  new
 Priority:  minor        |   Milestone:     
Component:  Cactus       |     Version:     
 Keywords:  test system  |  
-------------------------+--------------------------------------------------
 The test system finds out about which files to compile by merging all
 EXTENSIONS options from all thorns. If none are registered it just reports
 "no files were generated" since no files match the patterns. It might be
 useful to include a hint "Did you add file extensions in any test.ccl
 file?" in the test system output. This issue can arise if for example only
 some tests are transferred to a cluster or one inserts test cases into a
 source tree from a formaline tarball (to verify if that particular code
 would still pass the test). The tests then appear to all pass since 0 out
 of 0 files compare identical.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1280>
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