sqlite-utils/tests/test_gis.py
Chris Amico ee11274fcb
New spatialite helper methods, closes #79
- db.init_spatialite()
- table.add_geometry_column()
- table.create_spatial_index()

Co-authored-by: Simon Willison <swillison@gmail.com>
2022-02-03 21:55:09 -08:00

83 lines
2.4 KiB
Python

import pytest
from sqlite_utils.utils import find_spatialite
from sqlite_utils.db import Database
from sqlite_utils.utils import sqlite3
pytestmark = [
pytest.mark.skipif(
not find_spatialite(), reason="Could not find SpatiaLite extension"
),
pytest.mark.skipif(
not hasattr(sqlite3.Connection, "enable_load_extension"),
reason="sqlite3.Connection missing enable_load_extension",
),
]
def test_find_spatialite():
spatialite = find_spatialite()
assert spatialite is None or isinstance(spatialite, str)
def test_init_spatialite():
db = Database(memory=True)
spatialite = find_spatialite()
db.init_spatialite(spatialite)
assert "spatial_ref_sys" in db.table_names()
def test_add_geometry_column():
db = Database(memory=True)
spatialite = find_spatialite()
db.init_spatialite(spatialite)
# create a table first
table = db.create_table("locations", {"id": str, "properties": str})
table.add_geometry_column(
column_name="geometry",
geometry_type="Point",
srid=4326,
coord_dimension=2,
)
assert db["geometry_columns"].get(["locations", "geometry"]) == {
"f_table_name": "locations",
"f_geometry_column": "geometry",
"geometry_type": 1, # point
"coord_dimension": 2,
"srid": 4326,
"spatial_index_enabled": 0,
}
def test_create_spatial_index():
db = Database(memory=True)
spatialite = find_spatialite()
assert db.init_spatialite(spatialite)
# create a table, add a geometry column with default values
table = db.create_table("locations", {"id": str, "properties": str})
assert table.add_geometry_column("geometry", "Point")
# index it
assert table.create_spatial_index("geometry")
assert "idx_locations_geometry" in db.table_names()
def test_double_create_spatial_index():
db = Database(memory=True)
spatialite = find_spatialite()
db.init_spatialite(spatialite)
# create a table, add a geometry column with default values
table = db.create_table("locations", {"id": str, "properties": str})
table.add_geometry_column("geometry", "Point")
# index it, return True
assert table.create_spatial_index("geometry")
assert "idx_locations_geometry" in db.table_names()
# call it again, return False
assert not table.create_spatial_index("geometry")