[GRASS-dev] [GRASS GIS] #3852: PyGRASS GridModule silently ignores when module has no output defined

[GRASS GIS]

#3852: PyGRASS GridModule silently ignores when module has no output defined
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 Reporter:  martinl      |      Owner:  grass-dev@…
     Type:  defect       |     Status:  new
 Priority:  normal       |  Milestone:  7.6.2
Component:  PyGRASS      |    Version:  unspecified
 Keywords:  GridModule   |        CPU:  Unspecified
 Platform:  Unspecified  |
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 For modules like G7:r.mapcalc PyGRASS !GridModule class fails to work. No
 output is patched since the module has no output option defined.

 {{{
 from grass.pygrass.modules import Module
 from grass.pygrass.modules.grid import GridModule
 from grass.pygrass.utils import findmaps
 from grass.pygrass.gis import Mapset

 Module('g.region', n=1000, s=0, e=1000, w=0, res=1)

 grd = GridModule('r.mapcalc',
                  width=250, height=250, overlap=0,
                  processes=4, split=False,
                  expression='out = 1')
 grd.run()

 print (findmaps('raster', 'out', mapset=str(Mapset())))
 }}}

 Prints

 {{{
  100%
  100%
  100%
  100%
  100%
  100%
  100%
  100%
  100%
  100%
  100%
  100%
  100%
  100%
  100%
  100%
 []
 }}}

 -> no raster map created. The !GridModule should fail at least when no
 output option is defined.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3852>
GRASS GIS <https://grass.osgeo.org>