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Add some tests for QgsCRSCache

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nyalldawson committed Jun 6, 2016
1 parent 0c6e289 commit 787d206bedff7fd908e832f1f5f34592e19f7dba
Showing with 94 additions and 0 deletions.
  1. +1 −0 tests/src/python/CMakeLists.txt
  2. +93 −0 tests/src/python/test_qgscrscache.py
@@ -33,6 +33,7 @@ ADD_PYTHON_TEST(PyQgsComposerView test_qgscomposerview.py)
ADD_PYTHON_TEST(PyQgsComposition test_qgscomposition.py)
ADD_PYTHON_TEST(PyQgsConditionalStyle test_qgsconditionalstyle.py)
ADD_PYTHON_TEST(PyQgsCoordinateTransform test_qgscoordinatetransform.py)
ADD_PYTHON_TEST(PyQgsCRSCache test_qgscrscache.py)
ADD_PYTHON_TEST(PyQgsDateTimeStatisticalSummary test_qgsdatetimestatisticalsummary.py)
ADD_PYTHON_TEST(PyQgsDelimitedTextProvider test_qgsdelimitedtextprovider.py)
ADD_PYTHON_TEST(PyQgsDistanceArea test_qgsdistancearea.py)
@@ -0,0 +1,93 @@
# -*- coding: utf-8 -*-
"""QGIS Unit tests for QgsCRSCache.
.. 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.
"""
__author__ = 'Nyall Dawson'
__date__ = '06/06/2016'
__copyright__ = 'Copyright 2016, The QGIS Project'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'

import qgis # NOQA

from qgis.core import (QgsCRSCache,
QgsCoordinateReferenceSystem,
QGis,
QgsUnitTypes
)

from qgis.testing import start_app, unittest
from qgis.PyQt.QtCore import QLocale

# Convenience instances in case you may need them
# not used in this test

start_app()


class TestQgsCRSCache(unittest.TestCase):

def testInstance(self):
""" test retrieving global instance """
self.assertTrue(QgsCRSCache.instance())

def testcrsByOgcWmsCrs(self):
""" test retrieving CRS from cache using Ogc WMS definition """

crs = QgsCRSCache.instance().crsByOgcWmsCrs('EPSG:4326')
self.assertTrue(crs.isValid())
self.assertEqual(crs.authid(), 'EPSG:4326')
# a second time, so crs is fetched from cache
crs = QgsCRSCache.instance().crsByOgcWmsCrs('EPSG:4326')
self.assertTrue(crs.isValid())
self.assertEqual(crs.authid(), 'EPSG:4326')

# invalid
crs = QgsCRSCache.instance().crsByOgcWmsCrs('i am not a CRS')
self.assertFalse(crs.isValid())
# a second time, so invalid crs is fetched from cache
crs = QgsCRSCache.instance().crsByOgcWmsCrs('i am not a CRS')
self.assertFalse(crs.isValid())

def testcrsByEpsgId(self):
""" test retrieving CRS from cache using EPSG id """

crs = QgsCRSCache.instance().crsByEpsgId(3111)
self.assertTrue(crs.isValid())
self.assertEqual(crs.authid(), 'EPSG:3111')
# a second time, so crs is fetched from cache
crs = QgsCRSCache.instance().crsByEpsgId(3111)
self.assertTrue(crs.isValid())
self.assertEqual(crs.authid(), 'EPSG:3111')

# invalid
crs = QgsCRSCache.instance().crsByEpsgId(-9999)
self.assertFalse(crs.isValid())
# a second time, so invalid crs is fetched from cache
crs = QgsCRSCache.instance().crsByEpsgId(-9999)
self.assertFalse(crs.isValid())

def testcrsByProj4(self):
""" test retrieving CRS from cache using proj4 """

crs = QgsCRSCache.instance().crsByProj4('+proj=utm +zone=55 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs ')
self.assertTrue(crs.isValid())
self.assertEqual(crs.authid(), 'EPSG:28355')
# a second time, so crs is fetched from cache
crs = QgsCRSCache.instance().crsByProj4('+proj=utm +zone=55 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs ')
self.assertTrue(crs.isValid())
self.assertEqual(crs.authid(), 'EPSG:28355')

# invalid
crs = QgsCRSCache.instance().crsByProj4('asdasdasd')
self.assertFalse(crs.isValid())
# a second time, so invalid crs is fetched from cache
crs = QgsCRSCache.instance().crsByProj4('asdasdasd')
self.assertFalse(crs.isValid())

if __name__ == '__main__':
unittest.main()

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