mirror of
https://github.com/django/django.git
synced 2024-12-30 21:16:26 +00:00
305 lines
11 KiB
Python
305 lines
11 KiB
Python
from unittest import skipUnless
|
|
|
|
from django.contrib.gis.db.models import fields
|
|
from django.contrib.gis.geos import MultiPolygon, Polygon
|
|
from django.core.exceptions import ImproperlyConfigured
|
|
from django.db import connection, migrations, models
|
|
from django.db.migrations.migration import Migration
|
|
from django.db.migrations.state import ProjectState
|
|
from django.test import TransactionTestCase, skipIfDBFeature, skipUnlessDBFeature
|
|
|
|
try:
|
|
GeometryColumns = connection.ops.geometry_columns()
|
|
HAS_GEOMETRY_COLUMNS = True
|
|
except NotImplementedError:
|
|
HAS_GEOMETRY_COLUMNS = False
|
|
|
|
|
|
class OperationTestCase(TransactionTestCase):
|
|
available_apps = ["gis_tests.gis_migrations"]
|
|
get_opclass_query = """
|
|
SELECT opcname, c.relname FROM pg_opclass AS oc
|
|
JOIN pg_index as i on oc.oid = ANY(i.indclass)
|
|
JOIN pg_class as c on c.oid = i.indexrelid
|
|
WHERE c.relname = %s
|
|
"""
|
|
|
|
def tearDown(self):
|
|
# Delete table after testing
|
|
if hasattr(self, "current_state"):
|
|
self.apply_operations(
|
|
"gis", self.current_state, [migrations.DeleteModel("Neighborhood")]
|
|
)
|
|
super().tearDown()
|
|
|
|
@property
|
|
def has_spatial_indexes(self):
|
|
if connection.ops.mysql:
|
|
with connection.cursor() as cursor:
|
|
return connection.introspection.supports_spatial_index(
|
|
cursor, "gis_neighborhood"
|
|
)
|
|
return True
|
|
|
|
def get_table_description(self, table):
|
|
with connection.cursor() as cursor:
|
|
return connection.introspection.get_table_description(cursor, table)
|
|
|
|
def assertColumnExists(self, table, column):
|
|
self.assertIn(column, [c.name for c in self.get_table_description(table)])
|
|
|
|
def assertColumnNotExists(self, table, column):
|
|
self.assertNotIn(column, [c.name for c in self.get_table_description(table)])
|
|
|
|
def apply_operations(self, app_label, project_state, operations):
|
|
migration = Migration("name", app_label)
|
|
migration.operations = operations
|
|
with connection.schema_editor() as editor:
|
|
return migration.apply(project_state, editor)
|
|
|
|
def set_up_test_model(self, force_raster_creation=False):
|
|
test_fields = [
|
|
("id", models.AutoField(primary_key=True)),
|
|
("name", models.CharField(max_length=100, unique=True)),
|
|
("geom", fields.MultiPolygonField(srid=4326)),
|
|
]
|
|
if connection.features.supports_raster or force_raster_creation:
|
|
test_fields += [("rast", fields.RasterField(srid=4326, null=True))]
|
|
operations = [migrations.CreateModel("Neighborhood", test_fields)]
|
|
self.current_state = self.apply_operations("gis", ProjectState(), operations)
|
|
|
|
def assertGeometryColumnsCount(self, expected_count):
|
|
self.assertEqual(
|
|
GeometryColumns.objects.filter(
|
|
**{
|
|
"%s__iexact" % GeometryColumns.table_name_col(): "gis_neighborhood",
|
|
}
|
|
).count(),
|
|
expected_count,
|
|
)
|
|
|
|
def assertSpatialIndexExists(self, table, column, raster=False):
|
|
with connection.cursor() as cursor:
|
|
constraints = connection.introspection.get_constraints(cursor, table)
|
|
if raster:
|
|
self.assertTrue(
|
|
any(
|
|
"st_convexhull(%s)" % column in c["definition"]
|
|
for c in constraints.values()
|
|
if c["definition"] is not None
|
|
)
|
|
)
|
|
else:
|
|
self.assertIn([column], [c["columns"] for c in constraints.values()])
|
|
|
|
def alter_gis_model(
|
|
self,
|
|
migration_class,
|
|
model_name,
|
|
field_name,
|
|
blank=False,
|
|
field_class=None,
|
|
field_class_kwargs=None,
|
|
):
|
|
args = [model_name, field_name]
|
|
if field_class:
|
|
field_class_kwargs = field_class_kwargs or {"srid": 4326, "blank": blank}
|
|
args.append(field_class(**field_class_kwargs))
|
|
operation = migration_class(*args)
|
|
old_state = self.current_state.clone()
|
|
operation.state_forwards("gis", self.current_state)
|
|
with connection.schema_editor() as editor:
|
|
operation.database_forwards("gis", editor, old_state, self.current_state)
|
|
|
|
|
|
class OperationTests(OperationTestCase):
|
|
def setUp(self):
|
|
super().setUp()
|
|
self.set_up_test_model()
|
|
|
|
def test_add_geom_field(self):
|
|
"""
|
|
Test the AddField operation with a geometry-enabled column.
|
|
"""
|
|
self.alter_gis_model(
|
|
migrations.AddField, "Neighborhood", "path", False, fields.LineStringField
|
|
)
|
|
self.assertColumnExists("gis_neighborhood", "path")
|
|
|
|
# Test GeometryColumns when available
|
|
if HAS_GEOMETRY_COLUMNS:
|
|
self.assertGeometryColumnsCount(2)
|
|
|
|
# Test spatial indices when available
|
|
if self.has_spatial_indexes:
|
|
self.assertSpatialIndexExists("gis_neighborhood", "path")
|
|
|
|
@skipUnless(HAS_GEOMETRY_COLUMNS, "Backend doesn't support GeometryColumns.")
|
|
def test_geom_col_name(self):
|
|
self.assertEqual(
|
|
GeometryColumns.geom_col_name(),
|
|
"column_name" if connection.ops.oracle else "f_geometry_column",
|
|
)
|
|
|
|
@skipUnlessDBFeature("supports_raster")
|
|
def test_add_raster_field(self):
|
|
"""
|
|
Test the AddField operation with a raster-enabled column.
|
|
"""
|
|
self.alter_gis_model(
|
|
migrations.AddField, "Neighborhood", "heatmap", False, fields.RasterField
|
|
)
|
|
self.assertColumnExists("gis_neighborhood", "heatmap")
|
|
|
|
# Test spatial indices when available
|
|
if self.has_spatial_indexes:
|
|
self.assertSpatialIndexExists("gis_neighborhood", "heatmap", raster=True)
|
|
|
|
def test_add_blank_geom_field(self):
|
|
"""
|
|
Should be able to add a GeometryField with blank=True.
|
|
"""
|
|
self.alter_gis_model(
|
|
migrations.AddField, "Neighborhood", "path", True, fields.LineStringField
|
|
)
|
|
self.assertColumnExists("gis_neighborhood", "path")
|
|
|
|
# Test GeometryColumns when available
|
|
if HAS_GEOMETRY_COLUMNS:
|
|
self.assertGeometryColumnsCount(2)
|
|
|
|
# Test spatial indices when available
|
|
if self.has_spatial_indexes:
|
|
self.assertSpatialIndexExists("gis_neighborhood", "path")
|
|
|
|
@skipUnlessDBFeature("supports_raster")
|
|
def test_add_blank_raster_field(self):
|
|
"""
|
|
Should be able to add a RasterField with blank=True.
|
|
"""
|
|
self.alter_gis_model(
|
|
migrations.AddField, "Neighborhood", "heatmap", True, fields.RasterField
|
|
)
|
|
self.assertColumnExists("gis_neighborhood", "heatmap")
|
|
|
|
# Test spatial indices when available
|
|
if self.has_spatial_indexes:
|
|
self.assertSpatialIndexExists("gis_neighborhood", "heatmap", raster=True)
|
|
|
|
def test_remove_geom_field(self):
|
|
"""
|
|
Test the RemoveField operation with a geometry-enabled column.
|
|
"""
|
|
self.alter_gis_model(migrations.RemoveField, "Neighborhood", "geom")
|
|
self.assertColumnNotExists("gis_neighborhood", "geom")
|
|
|
|
# Test GeometryColumns when available
|
|
if HAS_GEOMETRY_COLUMNS:
|
|
self.assertGeometryColumnsCount(0)
|
|
|
|
@skipUnlessDBFeature("supports_raster")
|
|
def test_remove_raster_field(self):
|
|
"""
|
|
Test the RemoveField operation with a raster-enabled column.
|
|
"""
|
|
self.alter_gis_model(migrations.RemoveField, "Neighborhood", "rast")
|
|
self.assertColumnNotExists("gis_neighborhood", "rast")
|
|
|
|
def test_create_model_spatial_index(self):
|
|
if not self.has_spatial_indexes:
|
|
self.skipTest("No support for Spatial indexes")
|
|
|
|
self.assertSpatialIndexExists("gis_neighborhood", "geom")
|
|
|
|
if connection.features.supports_raster:
|
|
self.assertSpatialIndexExists("gis_neighborhood", "rast", raster=True)
|
|
|
|
@skipUnlessDBFeature("supports_3d_storage")
|
|
def test_add_3d_field_opclass(self):
|
|
if not connection.ops.postgis:
|
|
self.skipTest("PostGIS-specific test.")
|
|
|
|
self.alter_gis_model(
|
|
migrations.AddField,
|
|
"Neighborhood",
|
|
"point3d",
|
|
field_class=fields.PointField,
|
|
field_class_kwargs={"dim": 3},
|
|
)
|
|
self.assertColumnExists("gis_neighborhood", "point3d")
|
|
self.assertSpatialIndexExists("gis_neighborhood", "point3d")
|
|
|
|
with connection.cursor() as cursor:
|
|
index_name = "gis_neighborhood_point3d_113bc868_id"
|
|
cursor.execute(self.get_opclass_query, [index_name])
|
|
self.assertEqual(
|
|
cursor.fetchall(),
|
|
[("gist_geometry_ops_nd", index_name)],
|
|
)
|
|
|
|
@skipUnlessDBFeature("can_alter_geometry_field", "supports_3d_storage")
|
|
def test_alter_geom_field_dim(self):
|
|
Neighborhood = self.current_state.apps.get_model("gis", "Neighborhood")
|
|
p1 = Polygon(((0, 0), (0, 1), (1, 1), (1, 0), (0, 0)))
|
|
Neighborhood.objects.create(name="TestDim", geom=MultiPolygon(p1, p1))
|
|
# Add 3rd dimension.
|
|
self.alter_gis_model(
|
|
migrations.AlterField,
|
|
"Neighborhood",
|
|
"geom",
|
|
False,
|
|
fields.MultiPolygonField,
|
|
field_class_kwargs={"srid": 4326, "dim": 3},
|
|
)
|
|
self.assertTrue(Neighborhood.objects.first().geom.hasz)
|
|
# Rewind to 2 dimensions.
|
|
self.alter_gis_model(
|
|
migrations.AlterField,
|
|
"Neighborhood",
|
|
"geom",
|
|
False,
|
|
fields.MultiPolygonField,
|
|
field_class_kwargs={"srid": 4326, "dim": 2},
|
|
)
|
|
self.assertFalse(Neighborhood.objects.first().geom.hasz)
|
|
|
|
@skipUnlessDBFeature(
|
|
"supports_column_check_constraints", "can_introspect_check_constraints"
|
|
)
|
|
def test_add_check_constraint(self):
|
|
Neighborhood = self.current_state.apps.get_model("gis", "Neighborhood")
|
|
poly = Polygon(((0, 0), (0, 1), (1, 1), (1, 0), (0, 0)))
|
|
constraint = models.CheckConstraint(
|
|
check=models.Q(geom=poly),
|
|
name="geom_within_constraint",
|
|
)
|
|
Neighborhood._meta.constraints = [constraint]
|
|
with connection.schema_editor() as editor:
|
|
editor.add_constraint(Neighborhood, constraint)
|
|
with connection.cursor() as cursor:
|
|
constraints = connection.introspection.get_constraints(
|
|
cursor,
|
|
Neighborhood._meta.db_table,
|
|
)
|
|
self.assertIn("geom_within_constraint", constraints)
|
|
|
|
|
|
@skipIfDBFeature("supports_raster")
|
|
class NoRasterSupportTests(OperationTestCase):
|
|
def test_create_raster_model_on_db_without_raster_support(self):
|
|
msg = "Raster fields require backends with raster support."
|
|
with self.assertRaisesMessage(ImproperlyConfigured, msg):
|
|
self.set_up_test_model(force_raster_creation=True)
|
|
|
|
def test_add_raster_field_on_db_without_raster_support(self):
|
|
msg = "Raster fields require backends with raster support."
|
|
with self.assertRaisesMessage(ImproperlyConfigured, msg):
|
|
self.set_up_test_model()
|
|
self.alter_gis_model(
|
|
migrations.AddField,
|
|
"Neighborhood",
|
|
"heatmap",
|
|
False,
|
|
fields.RasterField,
|
|
)
|