D24006: Remove the usage of "null backend"

[Nikita Sirgienko]

sirgienko added a comment.


  In D24006#546359 <https://phabricator.kde.org/D24006#546359>, @asemke wrote:
  
  > In D24006#533156 <https://phabricator.kde.org/D24006#533156>, @sirgienko wrote:
  >
  > >
  >
  >
  > Even though we have only one single entry to render in testMathRender(), there are multiple render tasks triggered here. We need to understand this. But again, this all seems to be an issue somewhere in MathRender, MathRenderTask and/or WorksheetTest.
  
  
  I see. So, I think, we should revert time of waiting change (from 5 sec to 1 sec) and accept this patch.

REPOSITORY
  R55 Cantor

REVISION DETAIL
  https://phabricator.kde.org/D24006

To: asemke, sirgienko, filipesaraiva
Cc: kde-edu, narvaez, apol
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