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Tests.py
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Tests.py
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# -*- coding:utf-8 -*-
"""
/***************************************************************************
AutoFields
A QGIS plugin
Automatic attribute updates when creating or modifying vector features
-------------------
begin : 2016-05-22
copyright : (C) 2016 by Germán Carrillo (GeoTux)
email : gcarrillo@linuxmail.org
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
import os.path
import unittest
from qgis.core import ( QgsApplication, QgsMapLayerRegistry, QgsVectorLayer,
QgsField, QgsFeature, QgsGeometry, QgsPoint )
from PyQt4.QtCore import QSettings, QVariant
from AutoFieldManager import AutoFieldManager
from MessageManager import MessageManager
class AutoFieldsTests( unittest.TestCase ):
@classmethod
def setUpClass( self ):
self.msg = MessageManager( 'debug', None )
self.msg.show( "Info! SetUp started", 'info', True )
#Initialize QGIS app
app = QgsApplication([], True)
QgsApplication.setPrefixPath("/usr", True)
QgsApplication.initQgis()
#Configure QSettings (organization and application name)
self.settings = QSettings("GeoTux", "QGIS-Plugin-Test")
#Load layer, add field f1, and add layer to Registry
baseDir = os.path.dirname( os.path.realpath( __file__ ) )
self.layerPath = os.path.join( baseDir, 'test_data', 'test_points.shp' )
self.layer = QgsVectorLayer( self.layerPath, 'puntos', 'ogr' )
self.layer.dataProvider().addAttributes([QgsField('f1', QVariant.Double)])
self.layer.updateFields()
QgsMapLayerRegistry.instance().addMapLayer( self.layer )
#Instantiate AutoFieldManager
self.autoFieldManager = AutoFieldManager( self.msg, None, '/AutoFieldsTest', 'GeoTux', 'QGIS-Plugin-Test' )
def readStoredSettings( self, layer, fieldName ):
""" Helper function to get a dictionary of stored QSettings for an AutoField """
dictTmpProperties = {}
autoFieldId = self.autoFieldManager.buildAutoFieldId( layer, fieldName )
self.settings.beginGroup('/AutoFieldsTest/data/' + autoFieldId)
dictTmpProperties['layer'] = self.settings.value( "layer", "", type=str )
dictTmpProperties['field'] = self.settings.value( "field", u"", type=unicode )
dictTmpProperties['expression'] = self.settings.value( "expression", u"", type=unicode )
dictTmpProperties['layer2'] = self.settings.value( "layer2", "", type=str )
dictTmpProperties['field2'] = self.settings.value( "field2", "", type=str )
dictTmpProperties['enabled'] = self.settings.value( "enabled", False, type=bool )
self.settings.endGroup()
return dictTmpProperties
def test01CreateEnabledAutoField( self ):
""" QSettings should be properly stored, AutoField should be enabled """
self.msg.show( "Info! Test 1 started", 'info', True )
self.autoFieldManager.createAutoField(
layer=self.layer,
fieldName=u'f1',
expression=u'$x'
)
dictTmpProperties = self.readStoredSettings( self.layer, u'f1' )
dictExpectedProperties = {
'layer':self.layerPath,
'field':u'f1',
'expression':u'$x',
'layer2':"",
'field2':"",
'enabled':True
}
self.assertEqual( dictTmpProperties, dictExpectedProperties )
def test02AvoidTwoAutoFieldsOnSameField( self ):
""" AutoField should not be created if another one already exists on the same field."""
self.msg.show( "Info! Test 2 started", 'info', True )
res = self.autoFieldManager.createAutoField(
layer=self.layer,
fieldName=u'f1',
expression=u'$y'
)
self.assertFalse( res )
def test03EditAutoFieldLayer( self ):
""" AutoField value should be updated if a feature is added.
Note: It cannot handle the case when writing directly to the provider,
as QGIS doesn't have a SIGNAL for that.
self.layer.dataProvider().addFeatures( [ tmpFeature ] )
"""
self.msg.show( "Info! Test 3 started", 'info', True )
tmpFeature = QgsFeature( self.layer.pendingFields() )
tmpFeature.setGeometry( QgsGeometry.fromPoint( QgsPoint(-74.4, 4.5) ) )
# Either 1:
self.layer.startEditing()
self.layer.addFeature( tmpFeature )
self.layer.commitChanges()
# Or 2:
#with edit( self.layer ):
# self.layer.addFeature( tmpFeature )
addedFeature = self.layer.getFeatures().next()
self.assertEquals( addedFeature['f1'], -74.4 )
def test04ChangeAttributeValue( self ):
""" AutoField value should be updated if another AutoField value is changed """
self.msg.show( "Info! Test 4 started", 'info', True )
self.autoFieldManager.createAutoField(
layer=self.layer,
fieldName=u'modified',
expression=u'\'now: \' + to_string("f1")'
)
self.layer.startEditing()
self.layer.changeAttributeValue( 0, self.layer.fieldNameIndex( u'id' ), 1 )
self.layer.commitChanges()
feature = self.layer.getFeatures().next()
self.assertEquals( feature['modified'], 'now: -74.4' )
def test05FieldRemovedThenDisableAutoField( self ):
""" AutoField should be disabled if its base field is removed """
self.msg.show( "Info! Test 5 started", 'info', True )
fieldIndex = self.layer.fieldNameIndex( u'f1' )
self.layer.startEditing()
self.layer.deleteAttribute( fieldIndex )
self.layer.commitChanges()
dictTmpProperties = self.readStoredSettings( self.layer, u'f1' )
self.assertFalse( dictTmpProperties['enabled'] )
def test06MissingFieldAddedThenEnableAutoField( self ):
""" AutoField should be enabled if missing field is added """
self.msg.show( "Info! Test 6 started", 'info', True )
self.layer.startEditing()
self.layer.addAttribute( QgsField( 'f1', QVariant.Double, len=10, prec=2 ) )
self.layer.commitChanges()
dictTmpProperties = self.readStoredSettings( self.layer, u'f1' )
self.assertTrue( dictTmpProperties['enabled'] )
def test07LayerRemovedThenDisableAutoField( self ):
""" AutoField should be disabled if its base layer is removed """
self.msg.show( "Info! Test 7 started", 'info', True )
QgsMapLayerRegistry.instance().removeMapLayer( self.layer.id() )
# removeMapLayer deletes the underlying object, so create it again
self.layer = QgsVectorLayer( self.layerPath, 'puntos', 'ogr' )
dictTmpProperties = self.readStoredSettings( self.layer, u'f1' )
self.assertFalse( dictTmpProperties['enabled'] )
def test08MissingLayerAddedThenEnableAutoField( self ):
""" AutoField should be enabled if missing layer is added """
self.msg.show( "Info! Test 8 started", 'info', True )
# test07 deletes the layer object, so create it again
self.layer = QgsVectorLayer( self.layerPath, 'puntos', 'ogr' )
QgsMapLayerRegistry.instance().addMapLayer( self.layer )
dictTmpProperties = self.readStoredSettings( self.layer, u'f1' )
self.assertTrue( dictTmpProperties['enabled'] )
def test09RemoveAutoField( self ):
""" QSettings should be deleted for the removed AutoField """
self.msg.show( "Info! Test 9 started", 'info', True )
# test07 deletes the layer object, so create it again
self.layer = QgsVectorLayer( self.layerPath, 'puntos', 'ogr' )
autoFieldId = self.autoFieldManager.buildAutoFieldId( self.layer, u'f1')
self.autoFieldManager.removeAutoField( autoFieldId )
dictTmpProperties = self.readStoredSettings( self.layer, u'f1' )
self.assertEqual( dictTmpProperties, {'layer':"",'field':"",'expression':"",'layer2':"",'field2':"",'enabled':False} )
@classmethod
def tearDownClass( self ):
self.msg.show( "Info! TearDown started", 'info', True )
# test07 deletes the layer object, so create it again
self.layer = QgsVectorLayer( self.layerPath, 'puntos', 'ogr' )
#Remove AutoField modified
autoFieldId = self.autoFieldManager.buildAutoFieldId( self.layer, u'modified' )
self.autoFieldManager.removeAutoField( autoFieldId )
#Delete field f1
fieldIndex = self.layer.fieldNameIndex('f1')
self.layer.dataProvider().deleteAttributes( [fieldIndex] )
self.layer.updateFields()
#Delete features from test layer
fIds = self.layer.allFeatureIds()
self.layer.dataProvider().deleteFeatures( fIds )
#Remove layer from Registry
QgsMapLayerRegistry.instance().removeMapLayer( self.layer.id() )
self.msg.show( "Info! TearDown finished", 'info', True )
QgsApplication.exitQgis()
if __name__ == "__main__":
unittest.main()