mirror of
https://github.com/django/django.git
synced 2024-12-29 04:26:28 +00:00
356 lines
14 KiB
Python
356 lines
14 KiB
Python
import os
|
|
import re
|
|
from datetime import datetime
|
|
from pathlib import Path
|
|
|
|
from django.contrib.gis.gdal import DataSource, Envelope, GDALException, OGRGeometry
|
|
from django.contrib.gis.gdal.field import OFTDateTime, OFTInteger, OFTReal, OFTString
|
|
from django.contrib.gis.geos import GEOSGeometry
|
|
from django.test import SimpleTestCase
|
|
|
|
from ..test_data import TEST_DATA, TestDS, get_ds_file
|
|
|
|
wgs_84_wkt = (
|
|
'GEOGCS["GCS_WGS_1984",DATUM["WGS_1984",SPHEROID["WGS_1984",'
|
|
'6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",'
|
|
"0.017453292519943295]]"
|
|
)
|
|
# Using a regex because of small differences depending on GDAL versions.
|
|
wgs_84_wkt_regex = r'^GEOGCS\["(GCS_)?WGS[ _](19)?84".*$'
|
|
|
|
datetime_format = "%Y-%m-%dT%H:%M:%S"
|
|
|
|
# List of acceptable data sources.
|
|
ds_list = (
|
|
TestDS(
|
|
"test_point",
|
|
nfeat=5,
|
|
nfld=3,
|
|
geom="POINT",
|
|
gtype=1,
|
|
driver="ESRI Shapefile",
|
|
fields={"dbl": OFTReal, "int": OFTInteger, "str": OFTString},
|
|
extent=(-1.35011, 0.166623, -0.524093, 0.824508), # Got extent from QGIS
|
|
srs_wkt=wgs_84_wkt,
|
|
field_values={
|
|
"dbl": [float(i) for i in range(1, 6)],
|
|
"int": list(range(1, 6)),
|
|
"str": [str(i) for i in range(1, 6)],
|
|
},
|
|
fids=range(5),
|
|
),
|
|
TestDS(
|
|
"test_vrt",
|
|
ext="vrt",
|
|
nfeat=3,
|
|
nfld=3,
|
|
geom="POINT",
|
|
gtype="Point25D",
|
|
driver="OGR_VRT",
|
|
fields={
|
|
"POINT_X": OFTString,
|
|
"POINT_Y": OFTString,
|
|
"NUM": OFTString,
|
|
}, # VRT uses CSV, which all types are OFTString.
|
|
extent=(1.0, 2.0, 100.0, 523.5), # Min/Max from CSV
|
|
field_values={
|
|
"POINT_X": ["1.0", "5.0", "100.0"],
|
|
"POINT_Y": ["2.0", "23.0", "523.5"],
|
|
"NUM": ["5", "17", "23"],
|
|
},
|
|
fids=range(1, 4),
|
|
),
|
|
TestDS(
|
|
"test_poly",
|
|
nfeat=3,
|
|
nfld=3,
|
|
geom="POLYGON",
|
|
gtype=3,
|
|
driver="ESRI Shapefile",
|
|
fields={"float": OFTReal, "int": OFTInteger, "str": OFTString},
|
|
extent=(-1.01513, -0.558245, 0.161876, 0.839637), # Got extent from QGIS
|
|
srs_wkt=wgs_84_wkt,
|
|
),
|
|
TestDS(
|
|
"has_nulls",
|
|
nfeat=3,
|
|
nfld=6,
|
|
geom="POLYGON",
|
|
gtype=3,
|
|
driver="GeoJSON",
|
|
ext="geojson",
|
|
fields={
|
|
"uuid": OFTString,
|
|
"name": OFTString,
|
|
"num": OFTReal,
|
|
"integer": OFTInteger,
|
|
"datetime": OFTDateTime,
|
|
"boolean": OFTInteger,
|
|
},
|
|
extent=(-75.274200, 39.846504, -74.959717, 40.119040), # Got extent from QGIS
|
|
field_values={
|
|
"uuid": [
|
|
"1378c26f-cbe6-44b0-929f-eb330d4991f5",
|
|
"fa2ba67c-a135-4338-b924-a9622b5d869f",
|
|
"4494c1f3-55ab-4256-b365-12115cb388d5",
|
|
],
|
|
"name": ["Philadelphia", None, "north"],
|
|
"num": [1.001, None, 0.0],
|
|
"integer": [5, None, 8],
|
|
"boolean": [True, None, False],
|
|
"datetime": [
|
|
datetime.strptime("1994-08-14T11:32:14", datetime_format),
|
|
None,
|
|
datetime.strptime("2018-11-29T03:02:52", datetime_format),
|
|
],
|
|
},
|
|
fids=range(3),
|
|
),
|
|
)
|
|
|
|
bad_ds = (TestDS("foo"),)
|
|
|
|
|
|
class DataSourceTest(SimpleTestCase):
|
|
def test01_valid_shp(self):
|
|
"Testing valid SHP Data Source files."
|
|
|
|
for source in ds_list:
|
|
# Loading up the data source
|
|
ds = DataSource(source.ds)
|
|
|
|
# The layer count is what's expected (only 1 layer in a SHP file).
|
|
self.assertEqual(1, len(ds))
|
|
|
|
# Making sure GetName works
|
|
self.assertEqual(source.ds, ds.name)
|
|
|
|
# Making sure the driver name matches up
|
|
self.assertEqual(source.driver, str(ds.driver))
|
|
|
|
# Making sure indexing works
|
|
msg = "Index out of range when accessing layers in a datasource: %s."
|
|
with self.assertRaisesMessage(IndexError, msg % len(ds)):
|
|
ds.__getitem__(len(ds))
|
|
|
|
with self.assertRaisesMessage(
|
|
IndexError, "Invalid OGR layer name given: invalid."
|
|
):
|
|
ds.__getitem__("invalid")
|
|
|
|
def test_ds_input_pathlib(self):
|
|
test_shp = Path(get_ds_file("test_point", "shp"))
|
|
ds = DataSource(test_shp)
|
|
self.assertEqual(len(ds), 1)
|
|
|
|
def test02_invalid_shp(self):
|
|
"Testing invalid SHP files for the Data Source."
|
|
for source in bad_ds:
|
|
with self.assertRaises(GDALException):
|
|
DataSource(source.ds)
|
|
|
|
def test03a_layers(self):
|
|
"Testing Data Source Layers."
|
|
for source in ds_list:
|
|
ds = DataSource(source.ds)
|
|
|
|
# Incrementing through each layer, this tests DataSource.__iter__
|
|
for layer in ds:
|
|
self.assertEqual(layer.name, source.name)
|
|
self.assertEqual(str(layer), source.name)
|
|
# Making sure we get the number of features we expect
|
|
self.assertEqual(len(layer), source.nfeat)
|
|
|
|
# Making sure we get the number of fields we expect
|
|
self.assertEqual(source.nfld, layer.num_fields)
|
|
self.assertEqual(source.nfld, len(layer.fields))
|
|
|
|
# Testing the layer's extent (an Envelope), and its properties
|
|
self.assertIsInstance(layer.extent, Envelope)
|
|
self.assertAlmostEqual(source.extent[0], layer.extent.min_x, 5)
|
|
self.assertAlmostEqual(source.extent[1], layer.extent.min_y, 5)
|
|
self.assertAlmostEqual(source.extent[2], layer.extent.max_x, 5)
|
|
self.assertAlmostEqual(source.extent[3], layer.extent.max_y, 5)
|
|
|
|
# Now checking the field names.
|
|
flds = layer.fields
|
|
for f in flds:
|
|
self.assertIn(f, source.fields)
|
|
|
|
# Negative FIDs are not allowed.
|
|
with self.assertRaisesMessage(
|
|
IndexError, "Negative indices are not allowed on OGR Layers."
|
|
):
|
|
layer.__getitem__(-1)
|
|
with self.assertRaisesMessage(IndexError, "Invalid feature id: 50000."):
|
|
layer.__getitem__(50000)
|
|
|
|
if hasattr(source, "field_values"):
|
|
# Testing `Layer.get_fields` (which uses Layer.__iter__)
|
|
for fld_name, fld_value in source.field_values.items():
|
|
self.assertEqual(fld_value, layer.get_fields(fld_name))
|
|
|
|
# Testing `Layer.__getitem__`.
|
|
for i, fid in enumerate(source.fids):
|
|
feat = layer[fid]
|
|
self.assertEqual(fid, feat.fid)
|
|
# Maybe this should be in the test below, but we might
|
|
# as well test the feature values here while in this
|
|
# loop.
|
|
for fld_name, fld_value in source.field_values.items():
|
|
self.assertEqual(fld_value[i], feat.get(fld_name))
|
|
|
|
msg = (
|
|
"Index out of range when accessing field in a feature: %s."
|
|
)
|
|
with self.assertRaisesMessage(IndexError, msg % len(feat)):
|
|
feat.__getitem__(len(feat))
|
|
|
|
with self.assertRaisesMessage(
|
|
IndexError, "Invalid OFT field name given: invalid."
|
|
):
|
|
feat.__getitem__("invalid")
|
|
|
|
def test03b_layer_slice(self):
|
|
"Test indexing and slicing on Layers."
|
|
# Using the first data-source because the same slice
|
|
# can be used for both the layer and the control values.
|
|
source = ds_list[0]
|
|
ds = DataSource(source.ds)
|
|
|
|
sl = slice(1, 3)
|
|
feats = ds[0][sl]
|
|
|
|
for fld_name in ds[0].fields:
|
|
test_vals = [feat.get(fld_name) for feat in feats]
|
|
control_vals = source.field_values[fld_name][sl]
|
|
self.assertEqual(control_vals, test_vals)
|
|
|
|
def test03c_layer_references(self):
|
|
"""
|
|
Ensure OGR objects keep references to the objects they belong to.
|
|
"""
|
|
source = ds_list[0]
|
|
|
|
# See ticket #9448.
|
|
def get_layer():
|
|
# This DataSource object is not accessible outside this
|
|
# scope. However, a reference should still be kept alive
|
|
# on the `Layer` returned.
|
|
ds = DataSource(source.ds)
|
|
return ds[0]
|
|
|
|
# Making sure we can call OGR routines on the Layer returned.
|
|
lyr = get_layer()
|
|
self.assertEqual(source.nfeat, len(lyr))
|
|
self.assertEqual(source.gtype, lyr.geom_type.num)
|
|
|
|
# Same issue for Feature/Field objects, see #18640
|
|
self.assertEqual(str(lyr[0]["str"]), "1")
|
|
|
|
def test04_features(self):
|
|
"Testing Data Source Features."
|
|
for source in ds_list:
|
|
ds = DataSource(source.ds)
|
|
|
|
# Incrementing through each layer
|
|
for layer in ds:
|
|
# Incrementing through each feature in the layer
|
|
for feat in layer:
|
|
# Making sure the number of fields, and the geometry type
|
|
# are what's expected.
|
|
self.assertEqual(source.nfld, len(list(feat)))
|
|
self.assertEqual(source.gtype, feat.geom_type)
|
|
|
|
# Making sure the fields match to an appropriate OFT type.
|
|
for k, v in source.fields.items():
|
|
# Making sure we get the proper OGR Field instance, using
|
|
# a string value index for the feature.
|
|
self.assertIsInstance(feat[k], v)
|
|
self.assertIsInstance(feat.fields[0], str)
|
|
|
|
# Testing Feature.__iter__
|
|
for fld in feat:
|
|
self.assertIn(fld.name, source.fields)
|
|
|
|
def test05_geometries(self):
|
|
"Testing Geometries from Data Source Features."
|
|
for source in ds_list:
|
|
ds = DataSource(source.ds)
|
|
|
|
# Incrementing through each layer and feature.
|
|
for layer in ds:
|
|
geoms = layer.get_geoms()
|
|
geos_geoms = layer.get_geoms(geos=True)
|
|
self.assertEqual(len(geoms), len(geos_geoms))
|
|
self.assertEqual(len(geoms), len(layer))
|
|
for feat, geom, geos_geom in zip(layer, geoms, geos_geoms):
|
|
g = feat.geom
|
|
self.assertEqual(geom, g)
|
|
self.assertIsInstance(geos_geom, GEOSGeometry)
|
|
self.assertEqual(g, geos_geom.ogr)
|
|
# Making sure we get the right Geometry name & type
|
|
self.assertEqual(source.geom, g.geom_name)
|
|
self.assertEqual(source.gtype, g.geom_type)
|
|
|
|
# Making sure the SpatialReference is as expected.
|
|
if hasattr(source, "srs_wkt"):
|
|
self.assertIsNotNone(re.match(wgs_84_wkt_regex, g.srs.wkt))
|
|
|
|
def test06_spatial_filter(self):
|
|
"Testing the Layer.spatial_filter property."
|
|
ds = DataSource(get_ds_file("cities", "shp"))
|
|
lyr = ds[0]
|
|
|
|
# When not set, it should be None.
|
|
self.assertIsNone(lyr.spatial_filter)
|
|
|
|
# Must be set a/an OGRGeometry or 4-tuple.
|
|
with self.assertRaises(TypeError):
|
|
lyr._set_spatial_filter("foo")
|
|
|
|
# Setting the spatial filter with a tuple/list with the extent of
|
|
# a buffer centering around Pueblo.
|
|
with self.assertRaises(ValueError):
|
|
lyr._set_spatial_filter(list(range(5)))
|
|
filter_extent = (-105.609252, 37.255001, -103.609252, 39.255001)
|
|
lyr.spatial_filter = (-105.609252, 37.255001, -103.609252, 39.255001)
|
|
self.assertEqual(OGRGeometry.from_bbox(filter_extent), lyr.spatial_filter)
|
|
feats = [feat for feat in lyr]
|
|
self.assertEqual(1, len(feats))
|
|
self.assertEqual("Pueblo", feats[0].get("Name"))
|
|
|
|
# Setting the spatial filter with an OGRGeometry for buffer centering
|
|
# around Houston.
|
|
filter_geom = OGRGeometry(
|
|
"POLYGON((-96.363151 28.763374,-94.363151 28.763374,"
|
|
"-94.363151 30.763374,-96.363151 30.763374,-96.363151 28.763374))"
|
|
)
|
|
lyr.spatial_filter = filter_geom
|
|
self.assertEqual(filter_geom, lyr.spatial_filter)
|
|
feats = [feat for feat in lyr]
|
|
self.assertEqual(1, len(feats))
|
|
self.assertEqual("Houston", feats[0].get("Name"))
|
|
|
|
# Clearing the spatial filter by setting it to None. Now
|
|
# should indicate that there are 3 features in the Layer.
|
|
lyr.spatial_filter = None
|
|
self.assertEqual(3, len(lyr))
|
|
|
|
def test07_integer_overflow(self):
|
|
"Testing that OFTReal fields, treated as OFTInteger, do not overflow."
|
|
# Using *.dbf from Census 2010 TIGER Shapefile for Texas,
|
|
# which has land area ('ALAND10') stored in a Real field
|
|
# with no precision.
|
|
ds = DataSource(os.path.join(TEST_DATA, "texas.dbf"))
|
|
feat = ds[0][0]
|
|
# Reference value obtained using `ogrinfo`.
|
|
self.assertEqual(676586997978, feat.get("ALAND10"))
|
|
|
|
def test_nonexistent_field(self):
|
|
source = ds_list[0]
|
|
ds = DataSource(source.ds)
|
|
msg = "invalid field name: nonexistent"
|
|
with self.assertRaisesMessage(GDALException, msg):
|
|
ds[0].get_fields("nonexistent")
|