[processing][grass] Fix v.what.rast data type, add test

Author: nyalldawson

python/plugins/processing/algs/grass7/ext/v_what_rast.py

@@ -36,4 +36,4 @@ def processOutputs(alg, parameters, context, feedback):
     fileName = alg.parameterAsOutputLayer(parameters, 'output', context)
     grassName = alg.exportedLayers['map']
     dataType = 'auto'
-    alg.exportVectorLayer(grassName, fileName, dataType)
+    alg.exportVectorLayer(grassName, fileName, dataType=dataType)

python/plugins/processing/tests/testdata/custom/grass7/sample_points.cpg

@@ -0,0 +1 @@
+UTF-8

python/plugins/processing/tests/testdata/custom/grass7/sample_points.dbf

@@ -0,0 +1 @@
+GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]

python/plugins/processing/tests/testdata/custom/grass7/sample_points.prj

@@ -0,0 +1 @@
+GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]

python/plugins/processing/tests/testdata/custom/grass7/sample_points.qpj

@@ -0,0 +1 @@
+GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]