pocketpy/tests/83_array2d.py

from array2d import array2d

# test error args for __init__
try:
    a = array2d(0, 0)
    exit(0)
except ValueError:
    pass

# test callable constructor
a = array2d(2, 4, default=lambda: 0)

assert a.width == a.n_cols == 2
assert a.height == a.n_rows == 4
assert a.numel == 8

# test is_valid
assert a.is_valid(0, 0)
assert a.is_valid(1, 3)
assert not a.is_valid(2, 0)
assert not a.is_valid(0, 4)
assert not a.is_valid(-1, 0)
assert not a.is_valid(0, -1)

# test get
assert a.get(0, 0) == 0
assert a.get(1, 3) == 0
assert a.get(2, 0) is None
assert a.get(0, 4, default='S') == 'S'

# test __getitem__
assert a[0, 0] == 0
assert a[1, 3] == 0
try:
    a[2, 0]
    exit(1)
except IndexError:
    pass

# test __setitem__
a[0, 0] = 5
assert a[0, 0] == 5
a[1, 3] = 6
assert a[1, 3] == 6
try:
    a[0, -1] = 7
    exit(1)
except IndexError:
    pass

# test __iter__
a_list = [[5, 0], [0, 0], [0, 0], [0, 6]]
assert a_list == a.tolist()

# test __len__
assert len(a) == 4

# test __eq__
x = array2d(2, 4, default=0)
b = array2d(2, 4, default=0)
assert x == b

b[0, 0] = 1
assert x != b

# test __repr__
assert repr(a) == f'array2d(2, 4)'

# test map
c = a.map(lambda x: x + 1)
assert c.tolist() == [[6, 1], [1, 1], [1, 1], [1, 7]]
assert a.tolist() == [[5, 0], [0, 0], [0, 0], [0, 6]]
assert c.width == c.n_cols == 2
assert c.height == c.n_rows == 4
assert c.numel == 8

# test copy
d = c.copy()
assert d == c and d is not c

# test fill_
d.fill_(-3)
assert d == array2d(2, 4, default=-3)

# test apply_
d.apply_(lambda x: x + 3)
assert d == array2d(2, 4, default=0)

# test copy_
a.copy_(d)
assert a == d and a is not d
x = array2d(4, 4, default=0)
x.copy_(d)
assert x == d and x is not d
x.copy_(['a']*d.numel)
assert x == array2d(d.width, d.height, default='a')

# test subclass array2d
class A(array2d):
    def __init__(self):
        super().__init__(2, 4, default=0)

assert A().width == 2
assert A().height == 4
assert A().numel == 8
assert A().get(0, 0, default=2) == 0

# test alive_neighbors
a = array2d(3, 3, default=0)
a[1, 1] = 1
"""     moore    von_neumann
0 0 0   1 1 1    0 1 0
0 1 0   1 0 1    1 0 1
0 0 0   1 1 1    0 1 0
"""
moore_result = array2d(3, 3, default=1)
moore_result[1, 1] = 0

von_neumann_result = array2d(3, 3, default=0)
von_neumann_result[0, 1] = von_neumann_result[1, 0] = von_neumann_result[1, 2] = von_neumann_result[2, 1] = 1
a.count_neighbors(0, 'moore') == moore_result
a.count_neighbors(0, 'von_neumann') == von_neumann_result

# test slice get
a = array2d(5, 5, default=0)
b = array2d(3, 2, default=1)

assert a[1:4, 1:4] == array2d(3, 3, default=0)
assert a[1:4, 1:3] == array2d(3, 2, default=0)
assert a[1:4, 1:3] != b
a[1:4, 1:3] = b
assert a[1:4, 1:3] == b
"""
0 0 0 0 0
0 1 1 1 0
0 1 1 1 0
0 0 0 0 0
0 0 0 0 0
"""
assert a.count(1) == 3*2

assert a.find_bounding_rect(1) == (1, 1, 3, 2)
assert a.find_bounding_rect(0) == (0, 0, 5, 5)
assert a.find_bounding_rect(2) == None