Inzynierka/Lib/site-packages/pandas/tests/arrays/sparse/test_libsparse.py
2023-06-02 12:51:02 +02:00

553 lines
19 KiB
Python

import operator
import numpy as np
import pytest
import pandas._libs.sparse as splib
import pandas.util._test_decorators as td
from pandas import Series
import pandas._testing as tm
from pandas.core.arrays.sparse import (
BlockIndex,
IntIndex,
make_sparse_index,
)
TEST_LENGTH = 20
plain_case = [
[0, 7, 15],
[3, 5, 5],
[2, 9, 14],
[2, 3, 5],
[2, 9, 15],
[1, 3, 4],
]
delete_blocks = [
[0, 5],
[4, 4],
[1],
[4],
[1],
[3],
]
split_blocks = [
[0],
[10],
[0, 5],
[3, 7],
[0, 5],
[3, 5],
]
skip_block = [
[10],
[5],
[0, 12],
[5, 3],
[12],
[3],
]
no_intersect = [
[0, 10],
[4, 6],
[5, 17],
[4, 2],
[],
[],
]
one_empty = [
[0],
[5],
[],
[],
[],
[],
]
both_empty = [ # type: ignore[var-annotated]
[],
[],
[],
[],
[],
[],
]
CASES = [plain_case, delete_blocks, split_blocks, skip_block, no_intersect, one_empty]
IDS = [
"plain_case",
"delete_blocks",
"split_blocks",
"skip_block",
"no_intersect",
"one_empty",
]
class TestSparseIndexUnion:
@pytest.mark.parametrize(
"xloc, xlen, yloc, ylen, eloc, elen",
[
[[0], [5], [5], [4], [0], [9]],
[[0, 10], [5, 5], [2, 17], [5, 2], [0, 10, 17], [7, 5, 2]],
[[1], [5], [3], [5], [1], [7]],
[[2, 10], [4, 4], [4], [8], [2], [12]],
[[0, 5], [3, 5], [0], [7], [0], [10]],
[[2, 10], [4, 4], [4, 13], [8, 4], [2], [15]],
[[2], [15], [4, 9, 14], [3, 2, 2], [2], [15]],
[[0, 10], [3, 3], [5, 15], [2, 2], [0, 5, 10, 15], [3, 2, 3, 2]],
],
)
def test_index_make_union(self, xloc, xlen, yloc, ylen, eloc, elen):
# Case 1
# x: ----
# y: ----
# r: --------
# Case 2
# x: ----- -----
# y: ----- --
# Case 3
# x: ------
# y: -------
# r: ----------
# Case 4
# x: ------ -----
# y: -------
# r: -------------
# Case 5
# x: --- -----
# y: -------
# r: -------------
# Case 6
# x: ------ -----
# y: ------- ---
# r: -------------
# Case 7
# x: ----------------------
# y: ---- ---- ---
# r: ----------------------
# Case 8
# x: ---- ---
# y: --- ---
xindex = BlockIndex(TEST_LENGTH, xloc, xlen)
yindex = BlockIndex(TEST_LENGTH, yloc, ylen)
bresult = xindex.make_union(yindex)
assert isinstance(bresult, BlockIndex)
tm.assert_numpy_array_equal(bresult.blocs, np.array(eloc, dtype=np.int32))
tm.assert_numpy_array_equal(bresult.blengths, np.array(elen, dtype=np.int32))
ixindex = xindex.to_int_index()
iyindex = yindex.to_int_index()
iresult = ixindex.make_union(iyindex)
assert isinstance(iresult, IntIndex)
tm.assert_numpy_array_equal(iresult.indices, bresult.to_int_index().indices)
def test_int_index_make_union(self):
a = IntIndex(5, np.array([0, 3, 4], dtype=np.int32))
b = IntIndex(5, np.array([0, 2], dtype=np.int32))
res = a.make_union(b)
exp = IntIndex(5, np.array([0, 2, 3, 4], np.int32))
assert res.equals(exp)
a = IntIndex(5, np.array([], dtype=np.int32))
b = IntIndex(5, np.array([0, 2], dtype=np.int32))
res = a.make_union(b)
exp = IntIndex(5, np.array([0, 2], np.int32))
assert res.equals(exp)
a = IntIndex(5, np.array([], dtype=np.int32))
b = IntIndex(5, np.array([], dtype=np.int32))
res = a.make_union(b)
exp = IntIndex(5, np.array([], np.int32))
assert res.equals(exp)
a = IntIndex(5, np.array([0, 1, 2, 3, 4], dtype=np.int32))
b = IntIndex(5, np.array([0, 1, 2, 3, 4], dtype=np.int32))
res = a.make_union(b)
exp = IntIndex(5, np.array([0, 1, 2, 3, 4], np.int32))
assert res.equals(exp)
a = IntIndex(5, np.array([0, 1], dtype=np.int32))
b = IntIndex(4, np.array([0, 1], dtype=np.int32))
msg = "Indices must reference same underlying length"
with pytest.raises(ValueError, match=msg):
a.make_union(b)
class TestSparseIndexIntersect:
@td.skip_if_windows
@pytest.mark.parametrize("xloc, xlen, yloc, ylen, eloc, elen", CASES, ids=IDS)
def test_intersect(self, xloc, xlen, yloc, ylen, eloc, elen):
xindex = BlockIndex(TEST_LENGTH, xloc, xlen)
yindex = BlockIndex(TEST_LENGTH, yloc, ylen)
expected = BlockIndex(TEST_LENGTH, eloc, elen)
longer_index = BlockIndex(TEST_LENGTH + 1, yloc, ylen)
result = xindex.intersect(yindex)
assert result.equals(expected)
result = xindex.to_int_index().intersect(yindex.to_int_index())
assert result.equals(expected.to_int_index())
msg = "Indices must reference same underlying length"
with pytest.raises(Exception, match=msg):
xindex.intersect(longer_index)
with pytest.raises(Exception, match=msg):
xindex.to_int_index().intersect(longer_index.to_int_index())
def test_intersect_empty(self):
xindex = IntIndex(4, np.array([], dtype=np.int32))
yindex = IntIndex(4, np.array([2, 3], dtype=np.int32))
assert xindex.intersect(yindex).equals(xindex)
assert yindex.intersect(xindex).equals(xindex)
xindex = xindex.to_block_index()
yindex = yindex.to_block_index()
assert xindex.intersect(yindex).equals(xindex)
assert yindex.intersect(xindex).equals(xindex)
@pytest.mark.parametrize(
"case",
[
IntIndex(5, np.array([1, 2], dtype=np.int32)), # type: ignore[arg-type]
IntIndex(5, np.array([0, 2, 4], dtype=np.int32)), # type: ignore[arg-type]
IntIndex(0, np.array([], dtype=np.int32)), # type: ignore[arg-type]
IntIndex(5, np.array([], dtype=np.int32)), # type: ignore[arg-type]
],
)
def test_intersect_identical(self, case):
assert case.intersect(case).equals(case)
case = case.to_block_index()
assert case.intersect(case).equals(case)
class TestSparseIndexCommon:
def test_int_internal(self):
idx = make_sparse_index(4, np.array([2, 3], dtype=np.int32), kind="integer")
assert isinstance(idx, IntIndex)
assert idx.npoints == 2
tm.assert_numpy_array_equal(idx.indices, np.array([2, 3], dtype=np.int32))
idx = make_sparse_index(4, np.array([], dtype=np.int32), kind="integer")
assert isinstance(idx, IntIndex)
assert idx.npoints == 0
tm.assert_numpy_array_equal(idx.indices, np.array([], dtype=np.int32))
idx = make_sparse_index(
4, np.array([0, 1, 2, 3], dtype=np.int32), kind="integer"
)
assert isinstance(idx, IntIndex)
assert idx.npoints == 4
tm.assert_numpy_array_equal(idx.indices, np.array([0, 1, 2, 3], dtype=np.int32))
def test_block_internal(self):
idx = make_sparse_index(4, np.array([2, 3], dtype=np.int32), kind="block")
assert isinstance(idx, BlockIndex)
assert idx.npoints == 2
tm.assert_numpy_array_equal(idx.blocs, np.array([2], dtype=np.int32))
tm.assert_numpy_array_equal(idx.blengths, np.array([2], dtype=np.int32))
idx = make_sparse_index(4, np.array([], dtype=np.int32), kind="block")
assert isinstance(idx, BlockIndex)
assert idx.npoints == 0
tm.assert_numpy_array_equal(idx.blocs, np.array([], dtype=np.int32))
tm.assert_numpy_array_equal(idx.blengths, np.array([], dtype=np.int32))
idx = make_sparse_index(4, np.array([0, 1, 2, 3], dtype=np.int32), kind="block")
assert isinstance(idx, BlockIndex)
assert idx.npoints == 4
tm.assert_numpy_array_equal(idx.blocs, np.array([0], dtype=np.int32))
tm.assert_numpy_array_equal(idx.blengths, np.array([4], dtype=np.int32))
idx = make_sparse_index(4, np.array([0, 2, 3], dtype=np.int32), kind="block")
assert isinstance(idx, BlockIndex)
assert idx.npoints == 3
tm.assert_numpy_array_equal(idx.blocs, np.array([0, 2], dtype=np.int32))
tm.assert_numpy_array_equal(idx.blengths, np.array([1, 2], dtype=np.int32))
@pytest.mark.parametrize("kind", ["integer", "block"])
def test_lookup(self, kind):
idx = make_sparse_index(4, np.array([2, 3], dtype=np.int32), kind=kind)
assert idx.lookup(-1) == -1
assert idx.lookup(0) == -1
assert idx.lookup(1) == -1
assert idx.lookup(2) == 0
assert idx.lookup(3) == 1
assert idx.lookup(4) == -1
idx = make_sparse_index(4, np.array([], dtype=np.int32), kind=kind)
for i in range(-1, 5):
assert idx.lookup(i) == -1
idx = make_sparse_index(4, np.array([0, 1, 2, 3], dtype=np.int32), kind=kind)
assert idx.lookup(-1) == -1
assert idx.lookup(0) == 0
assert idx.lookup(1) == 1
assert idx.lookup(2) == 2
assert idx.lookup(3) == 3
assert idx.lookup(4) == -1
idx = make_sparse_index(4, np.array([0, 2, 3], dtype=np.int32), kind=kind)
assert idx.lookup(-1) == -1
assert idx.lookup(0) == 0
assert idx.lookup(1) == -1
assert idx.lookup(2) == 1
assert idx.lookup(3) == 2
assert idx.lookup(4) == -1
@pytest.mark.parametrize("kind", ["integer", "block"])
def test_lookup_array(self, kind):
idx = make_sparse_index(4, np.array([2, 3], dtype=np.int32), kind=kind)
res = idx.lookup_array(np.array([-1, 0, 2], dtype=np.int32))
exp = np.array([-1, -1, 0], dtype=np.int32)
tm.assert_numpy_array_equal(res, exp)
res = idx.lookup_array(np.array([4, 2, 1, 3], dtype=np.int32))
exp = np.array([-1, 0, -1, 1], dtype=np.int32)
tm.assert_numpy_array_equal(res, exp)
idx = make_sparse_index(4, np.array([], dtype=np.int32), kind=kind)
res = idx.lookup_array(np.array([-1, 0, 2, 4], dtype=np.int32))
exp = np.array([-1, -1, -1, -1], dtype=np.int32)
tm.assert_numpy_array_equal(res, exp)
idx = make_sparse_index(4, np.array([0, 1, 2, 3], dtype=np.int32), kind=kind)
res = idx.lookup_array(np.array([-1, 0, 2], dtype=np.int32))
exp = np.array([-1, 0, 2], dtype=np.int32)
tm.assert_numpy_array_equal(res, exp)
res = idx.lookup_array(np.array([4, 2, 1, 3], dtype=np.int32))
exp = np.array([-1, 2, 1, 3], dtype=np.int32)
tm.assert_numpy_array_equal(res, exp)
idx = make_sparse_index(4, np.array([0, 2, 3], dtype=np.int32), kind=kind)
res = idx.lookup_array(np.array([2, 1, 3, 0], dtype=np.int32))
exp = np.array([1, -1, 2, 0], dtype=np.int32)
tm.assert_numpy_array_equal(res, exp)
res = idx.lookup_array(np.array([1, 4, 2, 5], dtype=np.int32))
exp = np.array([-1, -1, 1, -1], dtype=np.int32)
tm.assert_numpy_array_equal(res, exp)
@pytest.mark.parametrize(
"idx, expected",
[
[0, -1],
[5, 0],
[7, 2],
[8, -1],
[9, -1],
[10, -1],
[11, -1],
[12, 3],
[17, 8],
[18, -1],
],
)
def test_lookup_basics(self, idx, expected):
bindex = BlockIndex(20, [5, 12], [3, 6])
assert bindex.lookup(idx) == expected
iindex = bindex.to_int_index()
assert iindex.lookup(idx) == expected
class TestBlockIndex:
def test_block_internal(self):
idx = make_sparse_index(4, np.array([2, 3], dtype=np.int32), kind="block")
assert isinstance(idx, BlockIndex)
assert idx.npoints == 2
tm.assert_numpy_array_equal(idx.blocs, np.array([2], dtype=np.int32))
tm.assert_numpy_array_equal(idx.blengths, np.array([2], dtype=np.int32))
idx = make_sparse_index(4, np.array([], dtype=np.int32), kind="block")
assert isinstance(idx, BlockIndex)
assert idx.npoints == 0
tm.assert_numpy_array_equal(idx.blocs, np.array([], dtype=np.int32))
tm.assert_numpy_array_equal(idx.blengths, np.array([], dtype=np.int32))
idx = make_sparse_index(4, np.array([0, 1, 2, 3], dtype=np.int32), kind="block")
assert isinstance(idx, BlockIndex)
assert idx.npoints == 4
tm.assert_numpy_array_equal(idx.blocs, np.array([0], dtype=np.int32))
tm.assert_numpy_array_equal(idx.blengths, np.array([4], dtype=np.int32))
idx = make_sparse_index(4, np.array([0, 2, 3], dtype=np.int32), kind="block")
assert isinstance(idx, BlockIndex)
assert idx.npoints == 3
tm.assert_numpy_array_equal(idx.blocs, np.array([0, 2], dtype=np.int32))
tm.assert_numpy_array_equal(idx.blengths, np.array([1, 2], dtype=np.int32))
@pytest.mark.parametrize("i", [5, 10, 100, 101])
def test_make_block_boundary(self, i):
idx = make_sparse_index(i, np.arange(0, i, 2, dtype=np.int32), kind="block")
exp = np.arange(0, i, 2, dtype=np.int32)
tm.assert_numpy_array_equal(idx.blocs, exp)
tm.assert_numpy_array_equal(idx.blengths, np.ones(len(exp), dtype=np.int32))
def test_equals(self):
index = BlockIndex(10, [0, 4], [2, 5])
assert index.equals(index)
assert not index.equals(BlockIndex(10, [0, 4], [2, 6]))
def test_check_integrity(self):
locs = []
lengths = []
# 0-length OK
BlockIndex(0, locs, lengths)
# also OK even though empty
BlockIndex(1, locs, lengths)
msg = "Block 0 extends beyond end"
with pytest.raises(ValueError, match=msg):
BlockIndex(10, [5], [10])
msg = "Block 0 overlaps"
with pytest.raises(ValueError, match=msg):
BlockIndex(10, [2, 5], [5, 3])
def test_to_int_index(self):
locs = [0, 10]
lengths = [4, 6]
exp_inds = [0, 1, 2, 3, 10, 11, 12, 13, 14, 15]
block = BlockIndex(20, locs, lengths)
dense = block.to_int_index()
tm.assert_numpy_array_equal(dense.indices, np.array(exp_inds, dtype=np.int32))
def test_to_block_index(self):
index = BlockIndex(10, [0, 5], [4, 5])
assert index.to_block_index() is index
class TestIntIndex:
def test_check_integrity(self):
# Too many indices than specified in self.length
msg = "Too many indices"
with pytest.raises(ValueError, match=msg):
IntIndex(length=1, indices=[1, 2, 3])
# No index can be negative.
msg = "No index can be less than zero"
with pytest.raises(ValueError, match=msg):
IntIndex(length=5, indices=[1, -2, 3])
# No index can be negative.
msg = "No index can be less than zero"
with pytest.raises(ValueError, match=msg):
IntIndex(length=5, indices=[1, -2, 3])
# All indices must be less than the length.
msg = "All indices must be less than the length"
with pytest.raises(ValueError, match=msg):
IntIndex(length=5, indices=[1, 2, 5])
with pytest.raises(ValueError, match=msg):
IntIndex(length=5, indices=[1, 2, 6])
# Indices must be strictly ascending.
msg = "Indices must be strictly increasing"
with pytest.raises(ValueError, match=msg):
IntIndex(length=5, indices=[1, 3, 2])
with pytest.raises(ValueError, match=msg):
IntIndex(length=5, indices=[1, 3, 3])
def test_int_internal(self):
idx = make_sparse_index(4, np.array([2, 3], dtype=np.int32), kind="integer")
assert isinstance(idx, IntIndex)
assert idx.npoints == 2
tm.assert_numpy_array_equal(idx.indices, np.array([2, 3], dtype=np.int32))
idx = make_sparse_index(4, np.array([], dtype=np.int32), kind="integer")
assert isinstance(idx, IntIndex)
assert idx.npoints == 0
tm.assert_numpy_array_equal(idx.indices, np.array([], dtype=np.int32))
idx = make_sparse_index(
4, np.array([0, 1, 2, 3], dtype=np.int32), kind="integer"
)
assert isinstance(idx, IntIndex)
assert idx.npoints == 4
tm.assert_numpy_array_equal(idx.indices, np.array([0, 1, 2, 3], dtype=np.int32))
def test_equals(self):
index = IntIndex(10, [0, 1, 2, 3, 4])
assert index.equals(index)
assert not index.equals(IntIndex(10, [0, 1, 2, 3]))
@pytest.mark.parametrize("xloc, xlen, yloc, ylen, eloc, elen", CASES, ids=IDS)
def test_to_block_index(self, xloc, xlen, yloc, ylen, eloc, elen):
xindex = BlockIndex(TEST_LENGTH, xloc, xlen)
yindex = BlockIndex(TEST_LENGTH, yloc, ylen)
# see if survive the round trip
xbindex = xindex.to_int_index().to_block_index()
ybindex = yindex.to_int_index().to_block_index()
assert isinstance(xbindex, BlockIndex)
assert xbindex.equals(xindex)
assert ybindex.equals(yindex)
def test_to_int_index(self):
index = IntIndex(10, [2, 3, 4, 5, 6])
assert index.to_int_index() is index
class TestSparseOperators:
@pytest.mark.parametrize("opname", ["add", "sub", "mul", "truediv", "floordiv"])
@pytest.mark.parametrize("xloc, xlen, yloc, ylen, eloc, elen", CASES, ids=IDS)
def test_op(self, opname, xloc, xlen, yloc, ylen, eloc, elen):
sparse_op = getattr(splib, f"sparse_{opname}_float64")
python_op = getattr(operator, opname)
xindex = BlockIndex(TEST_LENGTH, xloc, xlen)
yindex = BlockIndex(TEST_LENGTH, yloc, ylen)
xdindex = xindex.to_int_index()
ydindex = yindex.to_int_index()
x = np.arange(xindex.npoints) * 10.0 + 1
y = np.arange(yindex.npoints) * 100.0 + 1
xfill = 0
yfill = 2
result_block_vals, rb_index, bfill = sparse_op(
x, xindex, xfill, y, yindex, yfill
)
result_int_vals, ri_index, ifill = sparse_op(
x, xdindex, xfill, y, ydindex, yfill
)
assert rb_index.to_int_index().equals(ri_index)
tm.assert_numpy_array_equal(result_block_vals, result_int_vals)
assert bfill == ifill
# check versus Series...
xseries = Series(x, xdindex.indices)
xseries = xseries.reindex(np.arange(TEST_LENGTH)).fillna(xfill)
yseries = Series(y, ydindex.indices)
yseries = yseries.reindex(np.arange(TEST_LENGTH)).fillna(yfill)
series_result = python_op(xseries, yseries)
series_result = series_result.reindex(ri_index.indices)
tm.assert_numpy_array_equal(result_block_vals, series_result.values)
tm.assert_numpy_array_equal(result_int_vals, series_result.values)