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Extract postgres specific from vectorfilewriter test
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# -*- coding: utf-8 -*- | |||
"""QGIS Unit tests for QgsVectorFileWriter with a PostGres database. | |||
.. note:: 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. | |||
""" | |||
from builtins import next | |||
from builtins import str | |||
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__author__ = 'Julien Cabieces' | |||
__date__ = '22/03/2021' | |||
__copyright__ = 'Copyright 2021, The QGIS Project' | |||
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import qgis # NOQA | |||
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from qgis.core import (QgsVectorLayer, | |||
QgsCoordinateReferenceSystem, | |||
QgsVectorFileWriter) | |||
from qgis.PyQt.QtCore import QVariant, QDir | |||
import os | |||
from qgis.testing import start_app, unittest | |||
from utilities import unitTestDataPath | |||
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TEST_DATA_DIR = unitTestDataPath() | |||
start_app() | |||
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class TestQgsVectorFileWriterPG(unittest.TestCase): | |||
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def testWriteWithBoolField(self): | |||
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# init connection string | |||
dbconn = 'service=qgis_test' | |||
if 'QGIS_PGTEST_DB' in os.environ: | |||
dbconn = os.environ['QGIS_PGTEST_DB'] | |||
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# create a vector layer | |||
vl = QgsVectorLayer('{} table="qgis_test"."boolean_table" sql='.format(dbconn), "testbool", "postgres") | |||
self.assertTrue(vl.isValid()) | |||
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# check that 1 of its fields is a bool | |||
fields = vl.fields() | |||
self.assertEqual(fields.at(fields.indexFromName('fld1')).type(), QVariant.Bool) | |||
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# write a gpkg package with a bool field | |||
crs = QgsCoordinateReferenceSystem('EPSG:4326') | |||
filename = os.path.join(str(QDir.tempPath()), 'with_bool_field') | |||
rc, errmsg = QgsVectorFileWriter.writeAsVectorFormat(vl, | |||
filename, | |||
'utf-8', | |||
crs, | |||
'GPKG') | |||
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self.assertEqual(rc, QgsVectorFileWriter.NoError) | |||
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# open the resulting geopackage | |||
vl = QgsVectorLayer(filename + '.gpkg', '', 'ogr') | |||
self.assertTrue(vl.isValid()) | |||
fields = vl.fields() | |||
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# test type of converted field | |||
idx = fields.indexFromName('fld1') | |||
self.assertEqual(fields.at(idx).type(), QVariant.Bool) | |||
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# test values | |||
self.assertEqual(vl.getFeature(1).attributes()[idx], 1) | |||
self.assertEqual(vl.getFeature(2).attributes()[idx], 0) | |||
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del vl | |||
os.unlink(filename + '.gpkg') | |||
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if __name__ == '__main__': | |||
unittest.main() |