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import numpy as np
import pytest
import shapely
from shapely import LinearRing, LineString, MultiLineString, Point, Polygon
from shapely.tests.common import all_types, all_types_z, empty_point, ignore_invalid
all_non_empty_types = np.array(all_types + all_types_z)[
~shapely.is_empty(all_types + all_types_z)
]
# TODO add all_types_m and all_types_zm once tranform supports M coordinates
@pytest.mark.parametrize("geom", all_types + all_types_z)
def test_equality(geom):
assert geom == geom # noqa: PLR0124
transformed = shapely.transform(geom, lambda x: x, include_z=True)
if (
shapely.geos_version < (3, 9, 0)
and isinstance(geom, Point)
and geom.is_empty
and not geom.has_z
):
# the transformed empty 2D point has become 3D on GEOS 3.8
transformed = shapely.force_2d(geom)
assert geom == transformed
assert not (geom != transformed)
@pytest.mark.parametrize(
"left, right",
# automated test cases with transformed coordinate values
[(geom, shapely.transform(geom, lambda x: x + 1)) for geom in all_non_empty_types]
+ [
# (slightly) different coordinate values
(LineString([(0, 0), (1, 1)]), LineString([(0, 0), (1, 2)])),
(LineString([(0, 0), (1, 1)]), LineString([(0, 0), (1, 1 + 1e-12)])),
# different coordinate order
(LineString([(0, 0), (1, 1)]), LineString([(1, 1), (0, 0)])),
# different number of coordinates (but spatially equal)
(LineString([(0, 0), (1, 1)]), LineString([(0, 0), (1, 1), (1, 1)])),
(LineString([(0, 0), (1, 1)]), LineString([(0, 0), (0.5, 0.5), (1, 1)])),
# different order of sub-geometries
(
MultiLineString([[(1, 1), (2, 2)], [(2, 2), (3, 3)]]),
MultiLineString([[(2, 2), (3, 3)], [(1, 1), (2, 2)]]),
),
# M coordinates (don't work yet with automated cases)
pytest.param(
shapely.from_wkt("POINT M (0 0 0)"),
shapely.from_wkt("POINT M (0 0 1)"),
marks=pytest.mark.skipif(
shapely.geos_version < (3, 12, 0), reason="GEOS < 3.12"
),
),
pytest.param(
shapely.from_wkt("POINT ZM (0 0 0 0)"),
shapely.from_wkt("POINT ZM (0 0 0 1)"),
marks=pytest.mark.skipif(
shapely.geos_version < (3, 12, 0), reason="GEOS < 3.12"
),
),
],
)
def test_equality_false(left, right):
assert left != right
assert not (left == right)
with ignore_invalid():
cases1 = [
(LineString([(0, 1), (2, np.nan)]), LineString([(0, 1), (2, np.nan)])),
(
LineString([(0, 1), (np.nan, np.nan)]),
LineString([(0, 1), (np.nan, np.nan)]),
),
(LineString([(np.nan, 1), (2, 3)]), LineString([(np.nan, 1), (2, 3)])),
(LineString([(0, np.nan), (2, 3)]), LineString([(0, np.nan), (2, 3)])),
(
LineString([(np.nan, np.nan), (np.nan, np.nan)]),
LineString([(np.nan, np.nan), (np.nan, np.nan)]),
),
# NaN as explicit Z coordinate
# TODO: if first z is NaN -> considered as 2D -> tested below explicitly
# (
# LineString([(0, 1, np.nan), (2, 3, np.nan)]),
# LineString([(0, 1, np.nan), (2, 3, np.nan)]),
# ),
(
LineString([(0, 1, 2), (2, 3, np.nan)]),
LineString([(0, 1, 2), (2, 3, np.nan)]),
),
# (
# LineString([(0, 1, np.nan), (2, 3, 4)]),
# LineString([(0, 1, np.nan), (2, 3, 4)]),
# ),
]
@pytest.mark.parametrize("left, right", cases1)
def test_equality_with_nan(left, right):
assert left == right
assert not (left != right)
with ignore_invalid():
cases2 = [
(
LineString([(0, 1, np.nan), (2, 3, np.nan)]),
LineString([(0, 1, np.nan), (2, 3, np.nan)]),
),
(
LineString([(0, 1, np.nan), (2, 3, 4)]),
LineString([(0, 1, np.nan), (2, 3, 4)]),
),
]
@pytest.mark.parametrize("left, right", cases2)
def test_equality_with_nan_z(left, right):
assert left == right
assert not (left != right)
with ignore_invalid():
cases3 = [
(LineString([(0, np.nan), (2, 3)]), LineString([(0, 1), (2, 3)])),
(LineString([(0, 1), (2, np.nan)]), LineString([(0, 1), (2, 3)])),
(LineString([(0, 1, np.nan), (2, 3, 4)]), LineString([(0, 1, 2), (2, 3, 4)])),
(LineString([(0, 1, 2), (2, 3, np.nan)]), LineString([(0, 1, 2), (2, 3, 4)])),
pytest.param(
shapely.from_wkt("POINT M (0 0 0)"),
shapely.from_wkt("POINT M (0 0 NaN)"),
marks=pytest.mark.skipif(
shapely.geos_version < (3, 12, 0), reason="GEOS < 3.12"
),
),
pytest.param(
shapely.from_wkt("POINT ZM (0 0 0 0)"),
shapely.from_wkt("POINT ZM (0 0 0 NaN)"),
marks=pytest.mark.skipif(
shapely.geos_version < (3, 12, 0), reason="GEOS < 3.12"
),
),
]
@pytest.mark.parametrize("left, right", cases3)
def test_equality_with_nan_false(left, right):
assert left != right
def test_equality_with_nan_z_false():
with ignore_invalid():
left = LineString([(0, 1, np.nan), (2, 3, np.nan)])
right = LineString([(0, 1, np.nan), (2, 3, 4)])
if shapely.geos_version < (3, 10, 0):
# GEOS <= 3.9 fill the NaN with 0, so the z dimension is different
assert left != right
elif shapely.geos_version < (3, 12, 0):
# GEOS 3.10-3.11 ignore NaN for Z also when explicitly created with 3D
# and so the geometries are considered as 2D (and thus z dimension is ignored)
assert left == right
else:
assert left != right
def test_equality_z():
# different dimensionality
geom1 = Point(0, 1)
geom2 = Point(0, 1, 0)
assert geom1 != geom2
# different dimensionality with NaN z
geom2 = Point(0, 1, np.nan)
if shapely.geos_version < (3, 12, 0):
# GEOS 3.10-3.11 ignore NaN for Z also when explicitly created with 3D
# and so the geometries are considered as 2D (and thus z dimension is ignored)
assert geom1 == geom2
else:
assert geom1 != geom2
def test_equality_exact_type():
# geometries with different type but same coord seq are not equal
geom1 = LineString([(0, 0), (1, 1), (0, 1), (0, 0)])
geom2 = LinearRing([(0, 0), (1, 1), (0, 1), (0, 0)])
geom3 = Polygon([(0, 0), (1, 1), (0, 1), (0, 0)])
assert geom1 != geom2
assert geom1 != geom3
assert geom2 != geom3
# empty with different type
geom1 = shapely.from_wkt("POINT EMPTY")
geom2 = shapely.from_wkt("LINESTRING EMPTY")
assert geom1 != geom2
def test_equality_polygon():
# different exterior rings
geom1 = shapely.from_wkt("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))")
geom2 = shapely.from_wkt("POLYGON ((0 0, 10 0, 10 10, 0 15, 0 0))")
assert geom1 != geom2
# different number of holes
geom1 = shapely.from_wkt(
"POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0), (1 1, 2 1, 2 2, 1 1))"
)
geom2 = shapely.from_wkt(
"POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0), (1 1, 2 1, 2 2, 1 1), "
"(3 3, 4 3, 4 4, 3 3))"
)
assert geom1 != geom2
# different order of holes
geom1 = shapely.from_wkt(
"POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0), (3 3, 4 3, 4 4, 3 3), "
"(1 1, 2 1, 2 2, 1 1))"
)
geom2 = shapely.from_wkt(
"POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0), (1 1, 2 1, 2 2, 1 1), "
"(3 3, 4 3, 4 4, 3 3))"
)
assert geom1 != geom2
@pytest.mark.parametrize("geom", all_types)
def test_comparison_notimplemented(geom):
# comparing to a non-geometry class should return NotImplemented in __eq__
# to ensure proper delegation to other (eg to ensure comparison of scalar
# with array works)
# https://github.com/shapely/shapely/issues/1056
assert geom.__eq__(1) is NotImplemented
# with array
arr = np.array([geom, geom], dtype=object)
result = arr == geom
assert isinstance(result, np.ndarray)
assert result.all()
result = geom == arr
assert isinstance(result, np.ndarray)
assert result.all()
result = arr != geom
assert isinstance(result, np.ndarray)
assert not result.any()
result = geom != arr
assert isinstance(result, np.ndarray)
assert not result.any()
def test_comparison_not_supported():
geom1 = Point(1, 1)
geom2 = Point(2, 2)
with pytest.raises(TypeError, match="not supported between instances"):
assert geom1 > geom2
with pytest.raises(TypeError, match="not supported between instances"):
assert geom1 < geom2
with pytest.raises(TypeError, match="not supported between instances"):
assert geom1 >= geom2
with pytest.raises(TypeError, match="not supported between instances"):
assert geom1 <= geom2
@pytest.mark.parametrize(
"geom", all_types + (shapely.points(np.nan, np.nan), empty_point)
)
def test_hash_same_equal(geom):
hash1 = hash(geom)
hash2 = hash(shapely.transform(geom, lambda x: x))
assert hash1 == hash2, geom
@pytest.mark.parametrize("geom", all_non_empty_types)
def test_hash_same_not_equal(geom):
assert hash(geom) != hash(shapely.transform(geom, lambda x: x + 1))
|
