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# -*- coding: utf-8 -*-
"""
***************************************************************************
SagaAlgorithmsTests.py
---------------------
Date : September 2017
Copyright : (C) 2017 by Alexander Bruy
Email : alexander dot bruy at gmail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
__author__ = 'Alexander Bruy'
__date__ = 'September 2017'
__copyright__ = '(C) 2017, Alexander Bruy'
import os
import nose2
import shutil
import tempfile
from qgis.core import (QgsProcessingParameterNumber,
QgsProcessingParameterDefinition,
QgsVectorLayer,
QgsApplication,
QgsFeature,
QgsGeometry,
QgsPointXY,
QgsProcessingContext,
QgsProject,
QgsProcessingFeedback,
QgsProcessingFeatureSourceDefinition)
from qgis.testing import start_app, unittest
from processing.algs.saga.SagaParameters import Parameters, SagaImageOutputParam
import AlgorithmsTestBase
class TestSagaAlgorithms(unittest.TestCase, AlgorithmsTestBase.AlgorithmsTest):
@classmethod
def setUpClass(cls):
start_app()
from processing.core.Processing import Processing
Processing.initialize()
cls.cleanup_paths = []
cls.temp_dir = tempfile.mkdtemp()
cls.cleanup_paths.append(cls.temp_dir)
@classmethod
def tearDownClass(cls):
from processing.core.Processing import Processing
Processing.deinitialize()
for path in cls.cleanup_paths:
shutil.rmtree(path)
def test_definition_file(self):
return 'saga_algorithm_tests.yaml'
def test_is_parameter_line(self):
# Test determining whether a line is a parameter line
self.assertFalse(Parameters.is_parameter_line(''))
self.assertFalse(Parameters.is_parameter_line('xxxxxxxxx'))
self.assertTrue(Parameters.is_parameter_line('QgsProcessingParameterNumber|R_PERCTL_MIN|Percentiles Range for RED max|QgsProcessingParameterNumber.Integer|1|False|1|99'))
self.assertTrue(Parameters.is_parameter_line('*QgsProcessingParameterNumber|R_PERCTL_MIN|Percentiles Range for RED max|QgsProcessingParameterNumber.Integer|1|False|1|99'))
self.assertTrue(Parameters.is_parameter_line('SagaImageOutput|RGB|Output RGB'))
def test_param_line(self):
# Test creating a parameter from a description line
param = Parameters.create_parameter_from_line('QgsProcessingParameterNumber|R_PERCTL_MIN|Percentiles Range for RED max|QgsProcessingParameterNumber.Integer|1|False|1|99')
self.assertIsInstance(param, QgsProcessingParameterNumber)
self.assertEqual(param.name(), 'R_PERCTL_MIN')
self.assertEqual(param.description(), 'Percentiles Range for RED max')
self.assertEqual(param.dataType(), QgsProcessingParameterNumber.Integer)
self.assertFalse(param.flags() & QgsProcessingParameterDefinition.FlagOptional)
self.assertEqual(param.minimum(), 1)
self.assertEqual(param.maximum(), 99)
# Test SagaImageOutputParam line
param = Parameters.create_parameter_from_line('SagaImageOutput|RGB|Output RGB')
self.assertIsInstance(param, SagaImageOutputParam)
self.assertEqual(param.name(), 'RGB')
self.assertEqual(param.description(), 'Output RGB')
self.assertEqual(param.defaultFileExtension(), 'tif')
self.assertEqual(param.supportedOutputRasterLayerExtensions(), ['tif'])
def test_non_ascii_output(self):
# create a memory layer and add to project and context
layer = QgsVectorLayer("Point?crs=epsg:3857&field=fldtxt:string&field=fldint:integer",
"testmem", "memory")
self.assertTrue(layer.isValid())
pr = layer.dataProvider()
f = QgsFeature()
f.setAttributes(["test", 123])
f.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(100, 200)))
f2 = QgsFeature()
f2.setAttributes(["test2", 457])
f2.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(110, 200)))
self.assertTrue(pr.addFeatures([f, f2]))
self.assertEqual(layer.featureCount(), 2)
QgsProject.instance().addMapLayer(layer)
context = QgsProcessingContext()
context.setProject(QgsProject.instance())
alg = QgsApplication.processingRegistry().createAlgorithmById('saga:fixeddistancebuffer')
self.assertIsNotNone(alg)
temp_file = os.path.join(self.temp_dir, 'non_ascii_ñññ.shp')
parameters = {'SHAPES': 'testmem',
'DIST_FIELD_DEFAULT': 5,
'NZONES': 1,
'DARC': 5,
'DISSOLVE': False,
'POLY_INNER': False,
'BUFFER': temp_file}
feedback = QgsProcessingFeedback()
results, ok = alg.run(parameters, context, feedback)
self.assertTrue(ok)
self.assertTrue(os.path.exists(temp_file))
# make sure that layer has correct features
res = QgsVectorLayer(temp_file, 'res')
self.assertTrue(res.isValid())
self.assertEqual(res.featureCount(), 2)
QgsProject.instance().removeMapLayer(layer)
if __name__ == '__main__':
nose2.main()
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