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Add unit tests for QgsDataItemProviderRegistry

(cherry picked from commit 0b17db6)
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nyalldawson committed Oct 27, 2018
1 parent 4cd82a2 commit 7f0859729edebb15a64e1a87478fb9f037b5acd8
Showing with 80 additions and 0 deletions.
  1. +1 −0 tests/src/python/CMakeLists.txt
  2. +79 −0 tests/src/python/test_qgsdataitemproviderregistry.py
@@ -34,6 +34,7 @@ ADD_PYTHON_TEST(PyQgsCoordinateTransformContext test_qgscoordinatetransformconte
ADD_PYTHON_TEST(PyQgsDefaultValue test_qgsdefaultvalue.py)
ADD_PYTHON_TEST(PyQgsXmlUtils test_qgsxmlutils.py)
ADD_PYTHON_TEST(PyQgsCoordinateTransform test_qgscoordinatetransform.py)
ADD_PYTHON_TEST(PyQgsDataItemProviderRegistry test_qgsdataitemproviderregistry.py)
ADD_PYTHON_TEST(PyQgsDateTimeEdit test_qgsdatetimeedit.py)
ADD_PYTHON_TEST(PyQgsDateTimeStatisticalSummary test_qgsdatetimestatisticalsummary.py)
ADD_PYTHON_TEST(PyQgsDelimitedTextProvider test_qgsdelimitedtextprovider.py)
@@ -0,0 +1,79 @@
# -*- coding: utf-8 -*-
"""QGIS Unit tests for QgsDataItemProviderRegistry
.. 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__ = '27/10/2018'
__copyright__ = 'Copyright 2018, 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 (QgsApplication,
QgsDataItemProvider,
QgsDataProvider,
QgsDataItemProviderRegistry)
from qgis.testing import start_app, unittest

app = start_app()


class TestProvider(QgsDataItemProvider):

def __init__(self, name):
super().__init__()
self._name = name

def name(self):
return self._name

def capabilities(self):
return QgsDataProvider.File

def createDataItem(self, path, parent):
return None


class TestQgsDataItemProviderRegistry(unittest.TestCase):

def testAppRegistry(self):
# ensure there is an application instance
self.assertIsNotNone(QgsApplication.dataItemProviderRegistry())

def testRegistry(self):
registry = QgsDataItemProviderRegistry()
initial_providers = registry.providers()
self.assertTrue(initial_providers) # we expect a bunch of default providers
self.assertTrue([p.name() for p in initial_providers if p.name() == 'GDAL'])

# add a new provider
p1 = TestProvider('p1')
registry.addProvider(p1)
self.assertIn(p1, registry.providers())

p2 = TestProvider('p2')
registry.addProvider(p2)
self.assertIn(p1, registry.providers())
self.assertIn(p2, registry.providers())

registry.removeProvider(None)
p3 = TestProvider('p3')
# not in registry yet
registry.removeProvider(p3)

registry.removeProvider(p1)
self.assertNotIn('p1', [p.name() for p in registry.providers()])
self.assertIn(p2, registry.providers())

registry.removeProvider(p2)
self.assertNotIn('p2', [p.name() for p in registry.providers()])
self.assertEqual(registry.providers(), initial_providers)


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

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