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05ea4be7c3
Method was iterating over ever feature in a layer, including geometries and all attributes for EVERY attribute requested Add test and refactor so only one optimised iteration (eg no geometry, only required attributes) is used
128 lines
5.2 KiB
Python
128 lines
5.2 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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ToolsTest
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---------------------
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Date : July 2017
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Copyright : (C) 2017 by Nyall Dawson
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Email : nyall dot dawson at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Nyall Dawson'
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__date__ = 'July 2016'
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__copyright__ = '(C) 2016, Nyall Dawson'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.testing import start_app, unittest
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from processing.tests.TestData import points2
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from processing.tools import vector
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from qgis.core import (QgsVectorLayer, QgsFeatureRequest)
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from processing.core.ProcessingConfig import ProcessingConfig
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start_app()
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class VectorTest(unittest.TestCase):
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def testFeatures(self):
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ProcessingConfig.initialize()
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test_data = points2()
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test_layer = QgsVectorLayer(test_data, 'test', 'ogr')
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# test with all features
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features = vector.features(test_layer)
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self.assertEqual(len(features), 8)
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self.assertEqual(set([f.id() for f in features]), set([0, 1, 2, 3, 4, 5, 6, 7]))
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# test with selected features
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previous_value = ProcessingConfig.getSetting(ProcessingConfig.USE_SELECTED)
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ProcessingConfig.setSettingValue(ProcessingConfig.USE_SELECTED, True)
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test_layer.selectByIds([2, 4, 6])
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features = vector.features(test_layer)
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self.assertEqual(len(features), 3)
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self.assertEqual(set([f.id() for f in features]), set([2, 4, 6]))
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# selection, but not using selected features
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ProcessingConfig.setSettingValue(ProcessingConfig.USE_SELECTED, False)
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test_layer.selectByIds([2, 4, 6])
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features = vector.features(test_layer)
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self.assertEqual(len(features), 8)
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self.assertEqual(set([f.id() for f in features]), set([0, 1, 2, 3, 4, 5, 6, 7]))
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# using selected features, but no selection
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ProcessingConfig.setSettingValue(ProcessingConfig.USE_SELECTED, True)
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test_layer.removeSelection()
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features = vector.features(test_layer)
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self.assertEqual(len(features), 8)
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self.assertEqual(set([f.id() for f in features]), set([0, 1, 2, 3, 4, 5, 6, 7]))
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# test that feature request is honored
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ProcessingConfig.setSettingValue(ProcessingConfig.USE_SELECTED, False)
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features = vector.features(test_layer, QgsFeatureRequest().setFilterFids([1, 3, 5]))
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self.assertEqual(set([f.id() for f in features]), set([1, 3, 5]))
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# test that feature request is honored when using selections
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ProcessingConfig.setSettingValue(ProcessingConfig.USE_SELECTED, True)
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test_layer.selectByIds([2, 4, 6])
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features = vector.features(test_layer, QgsFeatureRequest().setFlags(QgsFeatureRequest.NoGeometry))
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self.assertTrue(all([not f.hasGeometry() for f in features]))
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features = vector.features(test_layer, QgsFeatureRequest().setFlags(QgsFeatureRequest.NoGeometry))
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self.assertEqual(set([f.id() for f in features]), set([2, 4, 6]))
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ProcessingConfig.setSettingValue(ProcessingConfig.USE_SELECTED, previous_value)
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def testValues(self):
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ProcessingConfig.initialize()
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test_data = points2()
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test_layer = QgsVectorLayer(test_data, 'test', 'ogr')
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# field by index
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res = vector.values(test_layer, 0)
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self.assertEqual(res[0], [1, 2, 3, 4, 5, 6, 7, 8])
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# field by name
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res = vector.values(test_layer, 'id')
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self.assertEqual(res['id'], [1, 2, 3, 4, 5, 6, 7, 8])
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# two fields
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res = vector.values(test_layer, 0, 3)
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self.assertEqual(res[0], [1, 2, 3, 4, 5, 6, 7, 8])
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self.assertEqual(res[3], [2, 1, 0, 2, 1, 0, 0, 0])
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# two fields by name
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res = vector.values(test_layer, 'id', 'id_2')
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self.assertEqual(res['id'], [1, 2, 3, 4, 5, 6, 7, 8])
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self.assertEqual(res['id_2'], [2, 1, 0, 2, 1, 0, 0, 0])
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# two fields by name and index
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res = vector.values(test_layer, 'id', 3)
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self.assertEqual(res['id'], [1, 2, 3, 4, 5, 6, 7, 8])
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self.assertEqual(res[3], [2, 1, 0, 2, 1, 0, 0, 0])
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# test with selected features
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previous_value = ProcessingConfig.getSetting(ProcessingConfig.USE_SELECTED)
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ProcessingConfig.setSettingValue(ProcessingConfig.USE_SELECTED, True)
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test_layer.selectByIds([2, 4, 6])
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res = vector.values(test_layer, 0)
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self.assertEqual(set(res[0]), set([5, 7, 3]))
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ProcessingConfig.setSettingValue(ProcessingConfig.USE_SELECTED, previous_value)
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if __name__ == '__main__':
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unittest.main()
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