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# -*- coding: utf-8 -*-
"""
***************************************************************************
SagaTest.py
---------------------
Date : March 2013
Copyright : (C) 2013 by Victor Olaya
Email : volayaf 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__ = 'Victor Olaya'
__date__ = 'March 2013'
__copyright__ = '(C) 2013, Victor Olaya'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import os
import unittest
from osgeo import gdal
from osgeo.gdalconst import GA_ReadOnly
import processing
from processing.tools import dataobjects
from processing.tools.system import *
from processing.tests.TestData import points, points2, polygons, polygons2, \
lines, union, table, polygonsGeoJson, raster
class SagaTest(unittest.TestCase):
"""Tests for saga algorithms"""
def test_sagametricconversions(self):
outputs = processing.runalg('saga:metricconversions', raster(), 0,
None)
output = outputs['CONV']
self.assertTrue(os.path.isfile(output))
dataset = gdal.Open(output, GA_ReadOnly)
strhash = hash(str(dataset.ReadAsArray(0).tolist()))
self.assertEqual(strhash, -2137931723)
def test_sagasortgrid(self):
outputs = processing.runalg('saga:sortgrid', raster(), True, None)
output = outputs['OUTPUT']
self.assertTrue(os.path.isfile(output))
dataset = gdal.Open(output, GA_ReadOnly)
strhash = hash(str(dataset.ReadAsArray(0).tolist()))
self.assertEqual(strhash, 1320073153)
def test_SagaVectorAlgorithmWithSelection(self):
layer = processing.getObject(polygons2())
feature = layer.getFeatures().next()
selected = [feature.id()]
layer.setSelectedFeatures(selected)
outputs = processing.runalg('saga:polygoncentroids', polygons2(),
True, None)
layer.setSelectedFeatures([])
output = outputs['CENTROIDS']
layer = dataobjects.getObjectFromUri(output, True)
fields = layer.pendingFields()
expectednames = ['ID', 'POLY_NUM_B', 'POLY_ST_B']
expectedtypes = ['Real', 'Real', 'String']
names = [str(f.name()) for f in fields]
types = [str(f.typeName()) for f in fields]
self.assertEqual(expectednames, names)
self.assertEqual(expectedtypes, types)
features = processing.features(layer)
self.assertEqual(1, len(features))
feature = features.next()
attrs = feature.attributes()
expectedvalues = ['2', '1', 'string a']
values = [str(attr) for attr in attrs]
self.assertEqual(expectedvalues, values)
wkt = 'POINT(270806.69221918 4458924.97720492)'
self.assertEqual(wkt, str(feature.geometry().exportToWkt()))
def test_SagaVectorAlgorithWithUnsupportedInputAndOutputFormat(self):
"""This tests both the exporting to shp and then the format
change in the output layer.
"""
layer = processing.getObject(polygonsGeoJson())
feature = layer.getFeatures().next()
selected = [feature.id()]
layer.setSelectedFeatures(selected)
outputs = processing.runalg('saga:polygoncentroids',
polygonsGeoJson(), True,
getTempFilename('geojson'))
layer.setSelectedFeatures([])
output = outputs['CENTROIDS']
layer = dataobjects.getObjectFromUri(output, True)
fields = layer.pendingFields()
expectednames = ['ID', 'POLY_NUM_A', 'POLY_ST_A']
expectedtypes = ['Real', 'Real', 'String']
names = [str(f.name()) for f in fields]
types = [str(f.typeName()) for f in fields]
self.assertEqual(expectednames, names)
self.assertEqual(expectedtypes, types)
features = processing.features(layer)
self.assertEqual(1, len(features))
feature = features.next()
attrs = feature.attributes()
expectedvalues = ['0', '1.1', 'string a']
values = [str(attr) for attr in attrs]
self.assertEqual(expectedvalues, values)
wkt = 'POINT(270787.49991451 4458955.46775295)'
self.assertEqual(wkt, str(feature.geometry().exportToWkt()))
def test_SagaRasterAlgorithmWithUnsupportedOutputFormat(self):
outputs = processing.runalg('saga:convergenceindex', raster(), 0, 0,
getTempFilename('img'))
output = outputs['RESULT']
self.assertTrue(os.path.isfile(output))
dataset = gdal.Open(output, GA_ReadOnly)
strhash = hash(str(dataset.ReadAsArray(0).tolist()))
self.assertEqual(strhash, 485390137)
def suite():
suite = unittest.makeSuite(SagaTest, 'test')
return suite
def runtests():
result = unittest.TestResult()
testsuite = suite()
testsuite.run(result)
return result
|
