Merge pull request #8776 from alexbruy/gdal_tests

[processing] cover more GDAL algorithms with unittests

Author: alexbruy

python/plugins/processing/algs/gdal/polygonize.py

@@ -111,7 +111,9 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
         if outFormat:
             arguments.append('-f {}'.format(outFormat))
 
-        arguments.append(GdalUtils.ogrLayerName(output))
+        layerName = GdalUtils.ogrLayerName(output)
+        if layerName:
+            arguments.append(layerName)
         arguments.append(self.parameterAsString(parameters, self.FIELD, context))
 
         commands = []

python/plugins/processing/tests/GdalAlgorithmsTest.py

@@ -61,6 +61,8 @@
 from processing.algs.gdal.rearrange_bands import rearrange_bands
 from processing.algs.gdal.gdaladdo import gdaladdo
 from processing.algs.gdal.sieve import sieve
+from processing.algs.gdal.gdal2xyz import gdal2xyz
+from processing.algs.gdal.polygonize import polygonize
 
 from processing.tools.system import isWindows
 
@@ -2514,6 +2516,88 @@ def testSieve(self):
                  source + ' ' +
                  outsource])
 
+    def testGdal2Xyz(self):
+        context = QgsProcessingContext()
+        feedback = QgsProcessingFeedback()
+        source = os.path.join(testDataPath, 'dem.tif')
+
+        with tempfile.TemporaryDirectory() as outdir:
+            outsource = outdir + '/check.csv'
+            alg = gdal2xyz()
+            alg.initAlgorithm()
+
+            # defaults
+            self.assertEqual(
+                alg.getConsoleCommands({'INPUT': source,
+                                        'BAND': 1,
+                                        'CSV': False,
+                                        'OUTPUT': outsource}, context, feedback),
+                ['gdal2xyz.py',
+                 '-band 1 ' +
+                 source + ' ' +
+                 outsource])
+
+            # csv output
+            self.assertEqual(
+                alg.getConsoleCommands({'INPUT': source,
+                                        'BAND': 1,
+                                        'CSV': True,
+                                        'OUTPUT': outsource}, context, feedback),
+                ['gdal2xyz.py',
+                 '-band 1 -csv ' +
+                 source + ' ' +
+                 outsource])
+
+    def testGdalPolygonize(self):
+        context = QgsProcessingContext()
+        feedback = QgsProcessingFeedback()
+        source = os.path.join(testDataPath, 'dem.tif')
+
+        with tempfile.TemporaryDirectory() as outdir:
+            outsource = outdir + '/check.shp'
+            alg = polygonize()
+            alg.initAlgorithm()
+
+            # defaults
+            self.assertEqual(
+                alg.getConsoleCommands({'INPUT': source,
+                                        'BAND': 1,
+                                        'FIELD': 'DN',
+                                        'EIGHT_CONNECTEDNESS': False,
+                                        'OUTPUT': outsource}, context, feedback),
+                ['gdal_polygonize.py',
+                 source + ' ' +
+                 outsource + ' ' +
+                 '-b 1 -f "ESRI Shapefile" DN'
+                 ])
+
+            # 8 connectedness
+            self.assertEqual(
+                alg.getConsoleCommands({'INPUT': source,
+                                        'BAND': 1,
+                                        'FIELD': 'DN',
+                                        'EIGHT_CONNECTEDNESS': True,
+                                        'OUTPUT': outsource}, context, feedback),
+                ['gdal_polygonize.py',
+                 source + ' ' +
+                 outsource + ' ' +
+                 '-8 -b 1 -f "ESRI Shapefile" DN'
+                 ])
+
+            # custom output format
+            outsource = outdir + '/check.gpkg'
+            self.assertEqual(
+                alg.getConsoleCommands({'INPUT': source,
+                                        'BAND': 1,
+                                        'FIELD': 'DN',
+                                        'EIGHT_CONNECTEDNESS': False,
+                                        'OUTPUT': outsource}, context, feedback),
+                ['gdal_polygonize.py',
+                 source + ' ' +
+                 outsource + ' ' +
+                 '-b 1 -f "GPKG" DN'
+                 ])
+
 
 class TestGdalOgrToPostGis(unittest.TestCase):
 

python/plugins/processing/tests/testdata/gdal_algorithm_tests.yaml

@@ -168,20 +168,6 @@ tests:
           - 'Band 1 Block=373x5 Type=Float32, ColorInterp=Gray'
           - '  NoData Value=-99999'
 
-# Disabled as gdal2xyz.py is not available on Travis
-#  - algorithm: gdal:gdal2xyz
-#    name: gdal2xyz
-#    params:
-#      BAND: 1
-#      CSV: false
-#      INPUT:
-#        name: dem.tif
-#        type: raster
-#    results:
-#      OUTPUT:
-#        name: expected/gdal/xyz.csv
-#        type: file
-
   - algorithm: gdal:tileindex
     name: Tile index (gdaltindex)
     params:
@@ -349,41 +335,6 @@ tests:
         hash: fff4a08498e93494f3f2cf1a9074451e6fd68341849aedc9e2c45e6a
         type: rasterhash
 
-# Disabled as gdal_poligonize.py is not available on Travis
-#  - algorithm: gdal:polygonize
-#    name: Polygonize
-#    params:
-#      BAND: 1
-#      EIGHT_CONNECTEDNESS: false
-#      FIELD: DN
-#      INPUT:
-#        name: dem.tif
-#        type: raster
-#    results:
-#      OUTPUT:
-#        name: expected/gdal/polygonize.gml
-#        type: vector
-
-# Disabled as gdal_proximity.py is not available on Travis
-#  - algorithm: gdal:proximity
-#    name: Proximity
-#    params:
-#      BAND: 1
-#      DATA_TYPE: 5
-#      INPUT:
-#        name: dem.tif
-#        type: raster
-#      MAX_DISTANCE: 0.0
-#      NODATA: 0.0
-#      OPTIONS: ''
-#      REPLACE: 0.0
-#      UNITS: 1
-#      VALUES: '90'
-#    results:
-#      OUTPUT:
-#        hash: 32802271d1ce083ca14078bfefaef6300ae8809af11f6a4270583d0c
-#        type: rasterhash
-
   - algorithm: gdal:rasterize
     name: Test (gdal:rasterize)
     params: