1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
import pytest
from pybind11_tests import Matrix, ConstructorStats
with pytest.suppress(ImportError):
import numpy as np
@pytest.requires_numpy
def test_to_python():
m = Matrix(5, 5)
assert m[2, 3] == 0
m[2, 3] = 4
assert m[2, 3] == 4
m2 = np.array(m, copy=False)
assert m2.shape == (5, 5)
assert abs(m2).sum() == 4
assert m2[2, 3] == 4
m2[2, 3] = 5
assert m2[2, 3] == 5
cstats = ConstructorStats.get(Matrix)
assert cstats.alive() == 1
del m
assert cstats.alive() == 1
del m2 # holds an m reference
assert cstats.alive() == 0
assert cstats.values() == ["5x5 matrix"]
assert cstats.copy_constructions == 0
# assert cstats.move_constructions >= 0 # Don't invoke any
assert cstats.copy_assignments == 0
assert cstats.move_assignments == 0
@pytest.requires_numpy
def test_from_python():
with pytest.raises(RuntimeError) as excinfo:
Matrix(np.array([1, 2, 3])) # trying to assign a 1D array
assert str(excinfo.value) == "Incompatible buffer format!"
m3 = np.array([[1, 2, 3], [4, 5, 6]]).astype(np.float32)
m4 = Matrix(m3)
for i in range(m4.rows()):
for j in range(m4.cols()):
assert m3[i, j] == m4[i, j]
cstats = ConstructorStats.get(Matrix)
assert cstats.alive() == 1
del m3, m4
assert cstats.alive() == 0
assert cstats.values() == ["2x3 matrix"]
assert cstats.copy_constructions == 0
# assert cstats.move_constructions >= 0 # Don't invoke any
assert cstats.copy_assignments == 0
assert cstats.move_assignments == 0
|
