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elpasonyalldawson
elpaso
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nyalldawson
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Unit tests for transform context project<->layer sync
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‎tests/src/python/test_qgsproject.py‎

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@@ -19,6 +19,7 @@
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import qgis # NOQA
2020

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from qgis.core import (QgsProject,
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QgsCoordinateTransformContext,
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QgsProjectDirtyBlocker,
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QgsApplication,
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QgsUnitTypes,
@@ -1190,6 +1191,16 @@ def testColorScheme(self):
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del p
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self.assertEqual(len(spy), 0)
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def testTransformContextSignalIsEmitted(self):
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"""Test that when a project transform context changes a transformContextChanged signal is emitted"""
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p = QgsProject()
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spy = QSignalSpy(p.transformContextChanged)
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ctx = QgsCoordinateTransformContext()
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ctx.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857), 1234, 1235)
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p.setTransformContext(ctx)
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self.assertEqual(len(spy), 1)
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if __name__ == '__main__':
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unittest.main()

‎tests/src/python/test_qgsrasterlayer.py‎

Lines changed: 61 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -47,7 +47,10 @@
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QgsSingleBandPseudoColorRenderer,
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QgsLimitedRandomColorRamp,
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QgsGradientColorRamp,
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QgsHueSaturationFilter)
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QgsHueSaturationFilter,
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QgsCoordinateTransformContext,
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QgsCoordinateReferenceSystem
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)
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from utilities import unitTestDataPath
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from qgis.testing import start_app, unittest
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from qgis.testing.mocked import get_iface
@@ -1030,6 +1033,62 @@ def layerToSld(self, layer, properties={}):
10301033
return dom, root, errorMessage
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10321035

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class TestQgsRasterLayerTransformContext(unittest.TestCase):
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def setUp(self):
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"""Prepare tc"""
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super(TestQgsRasterLayerTransformContext, self).setUp()
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self.ctx = QgsCoordinateTransformContext()
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self.ctx.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857), 1234, 1235)
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self.rpath = os.path.join(unitTestDataPath(), 'landsat.tif')
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def testTransformContextIsSetInCtor(self):
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"""Test transform context can be set from ctor"""
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rl = QgsRasterLayer(self.rpath, 'raster')
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self.assertFalse(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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options = QgsRasterLayer.LayerOptions(transformContext=self.ctx)
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rl = QgsRasterLayer(self.rpath, 'raster', 'gdal', options)
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self.assertTrue(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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def testTransformContextInheritsFromProject(self):
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"""Test that when a layer is added to a project it inherits its context"""
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rl = QgsRasterLayer(self.rpath, 'raster')
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self.assertFalse(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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p = QgsProject()
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self.assertFalse(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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p.setTransformContext(self.ctx)
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self.assertTrue(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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p.addMapLayers([rl])
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self.assertTrue(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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def testTransformContextIsSyncedFromProject(self):
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"""Test that when a layer is synced when project context changes"""
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rl = QgsRasterLayer(self.rpath, 'raster')
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self.assertFalse(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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p = QgsProject()
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self.assertFalse(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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p.setTransformContext(self.ctx)
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self.assertTrue(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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1080+
p.addMapLayers([rl])
1081+
self.assertTrue(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
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1083+
# Now change the project context
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tc2 = QgsCoordinateTransformContext()
1085+
p.setTransformContext(tc2)
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self.assertFalse(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
1087+
self.assertFalse(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
1088+
p.setTransformContext(self.ctx)
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self.assertTrue(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
1090+
self.assertTrue(rl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
1091+
1092+
10331093
if __name__ == '__main__':
10341094
unittest.main()
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rule

‎tests/src/python/test_qgsvectorlayer.py‎

Lines changed: 65 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -22,6 +22,7 @@
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from qgis.core import (QgsWkbTypes,
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QgsAction,
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QgsCoordinateTransformContext,
2526
QgsDataProvider,
2627
QgsDefaultValue,
2728
QgsEditorWidgetSetup,
@@ -3167,6 +3168,70 @@ def testMaximumValue(self):
31673168
pass
31683169

31693170

3171+
class TestQgsVectorLayerTransformContext(unittest.TestCase):
3172+
3173+
def setUp(self):
3174+
"""Prepare tc"""
3175+
super(TestQgsVectorLayerTransformContext, self).setUp()
3176+
self.ctx = QgsCoordinateTransformContext()
3177+
self.ctx.addSourceDestinationDatumTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857), 1234, 1235)
3178+
3179+
def testTransformContextIsSetInCtor(self):
3180+
"""Test transform context can be set from ctor"""
3181+
3182+
vl = QgsVectorLayer(
3183+
'Point?crs=epsg:4326&field=pk:integer&field=cnt:integer&field=name:string(0)&field=name2:string(0)&field=num_char:string&key=pk',
3184+
'test', 'memory')
3185+
self.assertFalse(vl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3186+
3187+
options = QgsVectorLayer.LayerOptions(self.ctx)
3188+
vl = QgsVectorLayer(
3189+
'Point?crs=epsg:4326&field=pk:integer&field=cnt:integer&field=name:string(0)&field=name2:string(0)&field=num_char:string&key=pk',
3190+
'test', 'memory', options)
3191+
self.assertTrue(vl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3192+
3193+
def testTransformContextInheritsFromProject(self):
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"""Test that when a layer is added to a project it inherits its context"""
3195+
3196+
vl = QgsVectorLayer(
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'Point?crs=epsg:4326&field=pk:integer&field=cnt:integer&field=name:string(0)&field=name2:string(0)&field=num_char:string&key=pk',
3198+
'test', 'memory')
3199+
self.assertFalse(vl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3200+
3201+
p = QgsProject()
3202+
self.assertFalse(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3203+
p.setTransformContext(self.ctx)
3204+
self.assertTrue(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3205+
3206+
p.addMapLayers([vl])
3207+
self.assertTrue(vl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3208+
3209+
def testTransformContextIsSyncedFromProject(self):
3210+
"""Test that when a layer is synced when project context changes"""
3211+
3212+
vl = QgsVectorLayer(
3213+
'Point?crs=epsg:4326&field=pk:integer&field=cnt:integer&field=name:string(0)&field=name2:string(0)&field=num_char:string&key=pk',
3214+
'test', 'memory')
3215+
self.assertFalse(vl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3216+
3217+
p = QgsProject()
3218+
self.assertFalse(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3219+
p.setTransformContext(self.ctx)
3220+
self.assertTrue(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3221+
3222+
p.addMapLayers([vl])
3223+
self.assertTrue(vl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3224+
3225+
# Now change the project context
3226+
tc2 = QgsCoordinateTransformContext()
3227+
p.setTransformContext(tc2)
3228+
self.assertFalse(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3229+
self.assertFalse(vl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3230+
p.setTransformContext(self.ctx)
3231+
self.assertTrue(p.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3232+
self.assertTrue(vl.transformContext().hasTransform(QgsCoordinateReferenceSystem(4326), QgsCoordinateReferenceSystem(3857)))
3233+
3234+
31703235
# TODO:
31713236
# - fetch rect: feat with changed geometry: 1. in rect, 2. out of rect
31723237
# - more join tests

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