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from __future__ import print_function
from pytest import mark, raises
from wand.api import library
from wand.image import Image
def expire(image):
"""Expire image's sequence cache."""
image.sequence.instances = []
def test_length(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
assert len(img.sequence) == 4
def test_validate_position_error(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
with raises(TypeError):
img.sequence.validate_position(0.001)
def test_validate_slice_error(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
with raises(ValueError):
img.sequence.validate_slice(slice(0, 10, 3))
def test_getitem(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
size = img.size
assert size == img.sequence[img.sequence.current_index].size
assert img.sequence[0].size == (32, 32)
assert img.sequence[1].size == (16, 16)
assert img.sequence[2].size == (32, 32)
assert img.sequence[3].size == (16, 16)
with raises(IndexError):
img.sequence[4]
assert img.sequence[-1].size == (16, 16)
assert img.sequence[-2].size == (32, 32)
assert img.sequence[-3].size == (16, 16)
assert img.sequence[-4].size == (32, 32)
with raises(IndexError):
img.sequence[-5]
assert img.size == size
def test_setitem(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as imga:
with Image(filename=str(fx_asset.joinpath('google.ico'))) as imgg:
imga.sequence[2] = imgg
assert len(imga.sequence) == 4
assert imga.sequence[2].size == (16, 16)
expire(imga)
assert imga.sequence[2].size == (16, 16)
with raises(TypeError):
imga.sequence[3] = 0xDEADBEEF
def test_delitem(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
detached = img.sequence[0]
del img.sequence[0]
assert len(img.sequence) == 3
assert img.sequence[0] is not detached
assert img.sequence[0].size == (16, 16)
expire(img)
assert len(img.sequence) == 3
assert img.sequence[0] is not detached
assert img.sequence[0].size == (16, 16)
assert img.sequence[1].size == (32, 32)
assert img.sequence[2].size == (16, 16)
def test_delitem_not_loaded(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
del img.sequence[1]
assert len(img.sequence) == 3
slices = {
'to_end': slice(2, None, None),
'from_first': slice(None, 2, None),
'from_back': slice(-2, None, None),
'to_back': slice(None, -2, None),
'middle': slice(1, 3, None),
'from_overflow': slice(10, None, None),
'to_overflow': slice(None, 10, None)
}
slice_items = list(sorted(slices.items(), key=lambda k: k[0]))
@mark.parametrize(('slice_name', 'slice_'), slice_items)
def test_getitem_slice(slice_name, slice_, fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
assert list(img.sequence[slice_]) == list(img.sequence)[slice_]
@mark.parametrize(('slice_name', 'slice_'), slice_items)
def test_setitem_slice(slice_name, slice_, fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as imga:
instances = list(imga.sequence)
with Image(filename=str(fx_asset.joinpath('github.ico'))) as imgg:
instances[slice_] = imgg.sequence
imga.sequence[slice_] = imgg.sequence
assert instances == list(imga.sequence)
expire(imga)
assert instances == list(imga.sequence)
@mark.parametrize(('slice_name', 'slice_'), slice_items)
def test_delitem_slice(slice_name, slice_, fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
instances = list(img.sequence)
del instances[slice_]
del img.sequence[slice_]
assert list(img.sequence) == instances
expire(img)
assert list(img.sequence) == instances
def test_iterator(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
container_size = img.sequence[img.sequence.current_index].size
actual = []
expected = [(32, 32), (16, 16), (32, 32), (16, 16)]
for i in img.sequence:
actual.append(i.size)
assert img.size == container_size
assert actual == expected
def test_append(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as imga:
with Image(filename=str(fx_asset.joinpath('google.ico'))) as imgg:
imga.sequence.append(imgg)
assert imga.sequence[4] == imgg.sequence[0]
expire(imga)
assert imga.sequence[4] == imgg.sequence[0]
assert len(imga.sequence) == 5
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as imga:
with Image(filename=str(fx_asset.joinpath('github.ico'))) as imgg:
imga.sequence.append(imgg)
assert imga.sequence[4] == imgg.sequence[0]
expire(imga)
assert imga.sequence[4] == imgg.sequence[0]
assert len(imga.sequence) == 5
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as imga:
with Image(filename=str(fx_asset.joinpath('github.ico'))) as imgg:
imga.sequence.append(imgg.sequence[1])
assert imga.sequence[4] == imgg.sequence[1]
expire(imga)
assert imga.sequence[4] == imgg.sequence[1]
assert len(imga.sequence) == 5
def test_insert(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as imga:
instances = [imga.sequence[i] for i in range(2, 4)]
assert len(imga.sequence) == 4
with Image(filename=str(fx_asset.joinpath('github.ico'))) as imgg:
imga.sequence.insert(2, imgg)
assert imga.sequence[2] == imgg.sequence[0]
assert len(imga.sequence) == 5
for i, instance in enumerate(instances):
assert instance == imga.sequence[3 + i]
expire(imga)
assert imga.sequence[2] == imgg.sequence[0]
for i, instance in enumerate(instances):
assert instance == imga.sequence[3 + i]
with raises(TypeError):
imga.sequence.insert(0xDEADBEEF)
def test_insert_first(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as imga:
assert len(imga.sequence) == 4
with Image(filename=str(fx_asset.joinpath('github.ico'))) as imgg:
imga.sequence.insert(0, imgg)
assert imga.sequence[0] == imgg.sequence[0]
expire(imga)
assert imga.sequence[0] == imgg.sequence[0]
assert len(imga.sequence) == 5
def test_extend(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as a:
length = len(a.sequence)
with Image(filename=str(fx_asset.joinpath('github.ico'))) as b:
a.sequence.extend(list(b.sequence)[::-1])
assert a.sequence[length] == b.sequence[1]
assert a.sequence[length + 1] == b.sequence[0]
expire(a)
assert a.sequence[length] == b.sequence[1]
assert a.sequence[length + 1] == b.sequence[0]
assert len(a.sequence) == 6
with raises(TypeError):
a.sequence.extend([0xDEADBEEF])
def test_extend_sequence(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as a:
length = len(a.sequence)
with Image(filename=str(fx_asset.joinpath('github.ico'))) as b:
a.sequence.extend(b.sequence)
for i in range(2):
assert a.sequence[length + i] == b.sequence[i]
expire(a)
for i in range(2):
assert a.sequence[length + i] == b.sequence[i]
assert len(a.sequence) == 6
@mark.parametrize('how_many', range(2, 5))
def test_extend_offset(fx_asset, how_many):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as a:
instances = list(a.sequence)
with Image(filename=str(fx_asset.joinpath('github.ico'))) as b:
added = list(b.sequence)[::-1] + [b.sequence[0]] * (how_many - 2)
a.sequence.extend(added, 2)
instances[2:2] = added
assert list(a.sequence) == instances
expire(a)
assert list(a.sequence) == instances
assert len(a.sequence) == 4 + how_many
def test_extend_offset_sequence(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as a:
instances = list(a.sequence)
with Image(filename=str(fx_asset.joinpath('github.ico'))) as b:
a.sequence.extend(b.sequence, 2)
instances[2:2] = list(b.sequence)
assert list(a.sequence) == instances
expire(a)
assert list(a.sequence) == instances
assert len(a.sequence) == 6
def test_extend_first(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as a:
instances = list(a.sequence)
with Image(filename=str(fx_asset.joinpath('github.ico'))) as b:
a.sequence.extend(list(b.sequence)[::-1], 0)
instances[:0] = list(b.sequence)[::-1]
assert list(a.sequence) == instances
expire(a)
assert list(a.sequence) == instances
assert len(a.sequence) == 6
def test_extend_first_sequence(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as a:
instances = list(a.sequence)
with Image(filename=str(fx_asset.joinpath('github.ico'))) as b:
a.sequence.extend(b.sequence, 0)
instances[:0] = list(b.sequence)
assert list(a.sequence) == instances
expire(a)
assert list(a.sequence) == instances
assert len(a.sequence) == 6
def test_container(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
for single in img.sequence:
assert single.container is img
def test_index(fx_asset):
with Image(filename=str(fx_asset.joinpath('nocomments.gif'))) as img:
for i, single in enumerate(img.sequence):
assert single.index == i
del img.sequence[0]
for i, single in enumerate(img.sequence):
assert single.index == i
with Image(filename=str(fx_asset.joinpath('nocomments.gif'))) as img:
del img.sequence[2]
for i, single in enumerate(img.sequence):
assert single.index == i
@mark.parametrize(('cmp_name', 'f'), [
('equals', lambda i: i), # identity
('hash_equals', hash),
('signature_equals', lambda i: i.signature)
])
def test_equals(cmp_name, f, fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as a:
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as b:
assert f(a) == f(b)
assert f(a.sequence[0]) == f(b.sequence[0])
assert f(a) != f(b.sequence[1])
assert f(a.sequence[0]) != f(b.sequence[1])
assert f(a.sequence[1]) == f(b.sequence[1])
def test_clone(fx_asset):
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
with img.sequence[2].clone() as single:
assert single.wand != img.wand
assert len(single.sequence) == 1
assert len(list(single.sequence)) == 1
assert single.size == img.sequence[2].size
def test_changes_reflected_back(fx_asset):
"""Changes on each single image should be reflected back to
the container image.
"""
with Image(filename=str(fx_asset.joinpath('apple.ico'))) as img:
with img.sequence[3] as single:
single.resize(32, 32)
assert single.size == (32, 32)
img.sequence.instances[3] = None # to make new instance
uncommitted = img.sequence[3]
assert uncommitted.size == (16, 16)
img.sequence.instances[3] = None
with img.sequence[3] as committed:
assert committed.size == (32, 32)
def test_delay(fx_asset):
fpath = str(fx_asset.joinpath('nocomments-delay-100.gif'))
with Image(filename=fpath) as img:
for s in img.sequence:
assert s.delay == 100
def test_set_delay(fx_asset):
with Image(filename=str(fx_asset.joinpath('nocomments.gif'))) as img:
with img.sequence[2] as frame:
assert frame.delay == 0
frame.delay = 10
with img.sequence.index_context(2):
assert library.MagickGetImageDelay(img.wand) == 10
with raises(TypeError):
img.sequence[2].delay = 0.0001
with raises(ValueError):
img.sequence[2].delay = -1
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