[processing] tests for SAGA provider and related fixes

python/plugins/processing/algs/saga/SagaAlgorithm.py

@@ -152,14 +152,25 @@ def processAlgorithm(self, parameters, context, feedback):
                 if param.name() not in parameters or parameters[param.name()] is None:
                     continue
 
-                if parameters[param.name()].source().lower().endswith('sdat'):
-                    self.exportedLayers[param.name()] = parameters[param.name()].source()[:-4] + 'sgrd'
-                if parameters[param.name()].source().lower().endswith('sgrd'):
-                    self.exportedLayers[param.name()] = parameters[param.name()].source()
+                if isinstance(parameters[param.name()], str):
+                    if parameters[param.name()].lower().endswith('sdat'):
+                        self.exportedLayers[param.name()] = parameters[param.name()][:-4] + 'sgrd'
+                    if parameters[param.name()].lower().endswith('sgrd'):
+                        self.exportedLayers[param.name()] = parameters[param.name()]
+                    else:
+                        layer = self.parameterAsRasterLayer(parameters, param.name(), context)
+                        exportCommand = self.exportRasterLayer(param.name(), layer)
+                        if exportCommand is not None:
+                            commands.append(exportCommand)
                 else:
-                    exportCommand = self.exportRasterLayer(param.name(), parameters[param.name()])
-                    if exportCommand is not None:
-                        commands.append(exportCommand)
+                    if parameters[param.name()].source().lower().endswith('sdat'):
+                        self.exportedLayers[param.name()] = parameters[param.name()].source()[:-4] + 'sgrd'
+                    if parameters[param.name()].source().lower().endswith('sgrd'):
+                        self.exportedLayers[param.name()] = parameters[param.name()].source()
+                    else:
+                        exportCommand = self.exportRasterLayer(param.name(), parameters[param.name()])
+                        if exportCommand is not None:
+                            commands.append(exportCommand)
             elif isinstance(param, QgsProcessingParameterFeatureSource):
                 if param.name() not in parameters or parameters[param.name()] is None:
                     continue

python/plugins/processing/algs/saga/description/ShapesBufferFixed.txt

@@ -2,8 +2,8 @@ Shapes Buffer (Fixed distance)|Shapes Buffer
 shapes_tools
 QgsProcessingParameterFeatureSource|SHAPES|Shapes|-1|None|False
 QgsProcessingParameterNumber|DIST_FIELD_DEFAULT|Buffer distance|QgsProcessingParameterNumber.Double|100.0|False|0.0|None
-QgsProcessingParameterNumber|NZONES|Number of Buffer Zones|QgsProcessingParameterNumber.Double|1.0|False|1.0|None
+QgsProcessingParameterNumber|NZONES|Number of Buffer Zones|QgsProcessingParameterNumber.Int|1|False|1|None
 QgsProcessingParameterNumber|DARC|Arc Vertex Distance [Degree]|QgsProcessingParameterNumber.Double|5.0|False|0.01|45.0
-QgsProcessingParameterBoolean|DISSOLVE       |Dissolve Buffers|True
-QgsProcessingParameterBoolean|POLY_INNER       |Inner Buffer|False
-QgsProcessingParameterVectorDestination|BUFFER|Buffer
+QgsProcessingParameterBoolean|DISSOLVE|Dissolve Buffers|True
+QgsProcessingParameterBoolean|POLY_INNER|Inner Buffer|False
+QgsProcessingParameterVectorDestination|BUFFER|Buffer

python/plugins/processing/core/parameters.py

@@ -667,7 +667,7 @@ def getParameterFromString(s):
                     params[5] = True if params[5].lower() == 'true' else False
             elif clazz == QgsProcessingParameterNumber:
                 if len(params) > 2:
-                    params[2] = QgsProcessingParameterNumber.Integer if params[2].lower().endswith('integer') else QgsProcessingParameterNumber.Double
+                    params[2] = QgsProcessingParameterNumber.Integer if params[2].lower().endswith('int') else QgsProcessingParameterNumber.Double
                 if len(params) > 3:
                     params[3] = float(params[3].strip()) if params[3] is not None else 0
                 if len(params) > 4:

python/plugins/processing/tests/AlgorithmsTestBase.py

@@ -188,7 +188,10 @@ def load_result_param(self, param):
         elif param['type'] == 'rasterhash':
             outdir = tempfile.mkdtemp()
             self.cleanup_paths.append(outdir)
-            basename = 'raster.tif'
+            if self.test_definition_file().lower().startswith('saga'):
+                basename = 'raster.sdat'
+            else:
+                basename = 'raster.tif'
             filepath = os.path.join(outdir, basename)
             return filepath
 

python/plugins/processing/tests/testdata/expected/saga/buffer_polys.mshp

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<SAGA_METADATA>
+  <HISTORY saga-version="2.3.1">
+    <MODULE library="shapes_tools" id="18" name="Shapes Buffer">
+      <OPTION type="table_field" id="DIST_FIELD" name="Buffer Distance" index="-1">&lt;not set&gt;</OPTION>
+      <OPTION type="double" id="DIST_FIELD_DEFAULT" name="Default">0.500000</OPTION>
+      <OPTION type="boolean" id="DISSOLVE" name="Dissolve Buffers">FALSE</OPTION>
+      <OPTION type="integer" id="NZONES" name="Number of Buffer Zones">1</OPTION>
+      <OPTION type="boolean" id="POLY_INNER" name="Inner Buffer">FALSE</OPTION>
+      <OPTION type="double" id="DARC" name="Arc Vertex Distance [Degree]">5.000000</OPTION>
+      <INPUT type="shapes" id="SHAPES" name="Shapes">
+        <FILE>/tmp/processing_bc2b178d0edf4b61beb3fbfde63b4e0a/c3630530c5804e2aa806438066037680/SHAPES.shp</FILE>
+      </INPUT>
+      <OUTPUT type="shapes" id="BUFFER" name="Buffer">SHAPES [Buffer]</OUTPUT>
+    </MODULE>
+  </HISTORY>
+  <SOURCE>
+    <FILE></FILE>
+    <DATABASE>
+      <FIELDS>
+        <FIELD TYPE="STRING">fid</FIELD>
+        <FIELD TYPE="STRING">name</FIELD>
+        <FIELD TYPE="LONGINT">intval</FIELD>
+        <FIELD TYPE="DOUBLE">floatval</FIELD>
+      </FIELDS>
+    </DATABASE>
+    <PROJECTION>
+      <OGC_WKT>GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]</OGC_WKT>
+      <PROJ4>+proj=longlat +a=6378137.000000 +b=6356752.314245 +no_defs</PROJ4>
+      <EPSG>-1</EPSG>
+    </PROJECTION>
+  </SOURCE>
+  <DESCRIPTION></DESCRIPTION>
+</SAGA_METADATA>

python/plugins/processing/tests/testdata/expected/saga/buffer_polys.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/saga_algorithm_tests.yaml

@@ -2,3 +2,29 @@
 
 tests:
 
+  - algorithm: saga:invertgrid
+    name: Raster tools - Invert grid
+    params:
+      GRID:
+        name: dem.tif
+        type: raster
+    results:
+      INVERSE:
+        hash: 8e3947b878a00f70ce837fba962f6be6d3f0c8eae2d614099b015f1e
+        type: rasterhash
+
+  - algorithm: saga:fixeddistancebuffer
+    name: Vector general - Fixed distance buffer (polygon)
+    params:
+      DARC: 5.0
+      DISSOLVE: false
+      DIST_FIELD_DEFAULT: 0.5
+      NZONES: 1
+      POLY_INNER: false
+      SHAPES:
+        name: polys.gml
+        type: vector
+    results:
+      BUFFER:
+        name: expected/saga/buffer_polys.shp
+        type: vector