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Add test for DBManager's PostGIS connector and plugin

Only enabled when ENABLE_PGTEST is set
Includes test for dbname-less URI (#10600 and #16625 and #16626)

The test relies on default libpq accessed database containing
one raster table, but makes no effort to create such database yet.
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strk committed Jun 6, 2017
1 parent 72f95e6 commit 37387989911adc2a7a47849bc5dc0655f1ac9544
@@ -8,3 +8,10 @@ PLUGIN_INSTALL(db_manager db_plugins/postgis/icons ${ICON_FILES})

ADD_SUBDIRECTORY(plugins)

IF(ENABLE_TESTS)
INCLUDE(UsePythonTest)
IF (ENABLE_PGTEST)
ADD_PYTHON_TEST(dbmanager-postgis-connector connector_test.py)
ADD_PYTHON_TEST(dbmanager-postgis-plugin plugin_test.py)
ENDIF (ENABLE_PGTEST)
ENDIF(ENABLE_TESTS)
@@ -0,0 +1,76 @@
# -*- coding: utf-8 -*-

"""
***************************************************************************
connector_test.py
---------------------
Date : May 2017
Copyright : (C) 2017, Sandro Santilli
Email : strk at kbt dot io
***************************************************************************
* *
* 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__ = 'Sandro Santilli'
__date__ = 'May 2017'
__copyright__ = '(C) 2017, Sandro Santilli'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'

import os
import qgis
from qgis.testing import start_app, unittest
from qgis.core import QgsDataSourceUri
from qgis.utils import iface

start_app()

from db_manager.db_plugins.postgis.connector import PostGisDBConnector


class TestDBManagerPostgisConnector(unittest.TestCase):

#def setUpClass():

def _getUser(self, connector):
r = connector._execute(None, "SELECT USER")
val = connector._fetchone(r)[0]
connector._close_cursor(r)
return val

def _getDatabase(self, connector):
r = connector._execute(None, "SELECT current_database()")
val = connector._fetchone(r)[0]
connector._close_cursor(r)
return val

# See https://issues.qgis.org/issues/16625
# and https://issues.qgis.org/issues/10600
def test_dbnameLessURI(self):
c = PostGisDBConnector(QgsDataSourceUri())
self.assertIsInstance(c, PostGisDBConnector)
uri = c.uri()

# No username was passed, so we expect it to be taken
# from PGUSER or USER environment variables
expected_user = os.environ.get('PGUSER') or os.environ.get('USER')
actual_user = self._getUser(c)
self.assertEqual(actual_user, expected_user)

# No database was passed, so we expect it to be taken
# from PGDATABASE or expected user
expected_db = os.environ.get('PGDATABASE') or expected_user
actual_db = self._getDatabase(c)
self.assertEqual(actual_db, expected_db)

# TODO: add service-only test (requires a ~/.pg_service.conf file)


if __name__ == '__main__':
unittest.main()
@@ -0,0 +1,83 @@
# -*- coding: utf-8 -*-

"""
***************************************************************************
plugin_test.py
---------------------
Date : May 2017
Copyright : (C) 2017, Sandro Santilli
Email : strk at kbt dot io
***************************************************************************
* *
* 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__ = 'Sandro Santilli'
__date__ = 'May 2017'
__copyright__ = '(C) 2017, Sandro Santilli'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'

import os
import re
import qgis
from qgis.testing import start_app, unittest
from qgis.core import QgsDataSourceUri
from qgis.utils import iface
from qgis.PyQt.QtCore import QObject

start_app()

from db_manager.db_plugins.postgis.plugin import PostGisDBPlugin, PGRasterTable
from db_manager.db_plugins.postgis.plugin import PGDatabase
from db_manager.db_plugins.plugin import Table
from db_manager.db_plugins.postgis.connector import PostGisDBConnector


class TestDBManagerPostgisPlugin(unittest.TestCase):

# See https://issues.qgis.org/issues/16625
# and https://issues.qgis.org/issues/10600

def test_rasterTable(self):

#testdb = os.environ.get('QGIS_PGTEST_DB') or 'qgis_test'
#os.environ['PGDATABASE'] = testdb

obj = QObject() # needs to be kept alive
database = PGDatabase(obj, QgsDataSourceUri())
self.assertIsInstance(database, PGDatabase)

uri = database.uri()
self.assertEqual(uri.host(), '')
self.assertEqual(uri.username(), '')
expected_user = os.environ.get('PGUSER') or os.environ.get('USER')
expected_dbname = os.environ.get('PGDATABASE') or expected_user
self.assertEqual(uri.database(), expected_dbname)

tables = database.tables()
raster_tables_count = 0
for tab in tables:
if tab.type == Table.RasterType:
raster_tables_count += 1
gdalUri = tab.gdalUri()
m = re.search(' dbname=([^ ]*) ', gdalUri)
self.assertTrue(m)
actual_dbname = m.group(1)
self.assertEqual(actual_dbname, expected_dbname)
#print(tab.type)
#print(tab.quotedName())
#print(tab)

# We need to make sure a database is created with at
# least one raster table !
self.assertEqual(raster_tables_count, 1)


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

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