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test_package.py
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# encoding: utf-8
"""
Test suite for pptx.package module
"""
from __future__ import absolute_import, print_function
import pytest
from pptx.opc.constants import RELATIONSHIP_TYPE as RT
from pptx.opc.package import Part, _Relationship
from pptx.opc.packuri import PackURI
from pptx.package import _ImageParts, Package
from pptx.parts.coreprops import CoreProperties
from pptx.parts.image import Image, ImagePart
from pptx.parts.presentation import PresentationPart
from .unitutil.file import absjoin
from .unitutil.mock import (
class_mock, instance_mock, method_mock, property_mock
)
class DescribePackage(object):
def it_loads_default_template_when_opened_with_no_path(self):
prs = Package.open().presentation
assert prs is not None
slide_masters = prs.slide_masters
assert slide_masters is not None
assert len(slide_masters) == 1
slide_layouts = slide_masters[0].slide_layouts
assert slide_layouts is not None
assert len(slide_layouts) == 11
def it_provides_ref_to_package_presentation_part(self):
pkg = Package.open()
assert isinstance(pkg.presentation, PresentationPart)
def it_provides_access_to_its_core_properties_part(self):
pkg = Package.open()
assert isinstance(pkg.core_properties, CoreProperties)
def it_can_get_or_add_an_image_part(self, image_part_fixture):
package, image_file, image_part_ = image_part_fixture
image_part = package.get_or_add_image_part(image_file)
package._image_parts.get_or_add_image_part.assert_called_once_with(
image_file
)
assert image_part is image_part_
def it_can_save_itself_to_a_pptx_file(self, temp_pptx_path):
"""
Package.save produces a .pptx with plausible contents
"""
# setup ------------------------
pkg = Package.open()
# exercise ---------------------
pkg.save(temp_pptx_path)
# verify -----------------------
pkg = Package.open(temp_pptx_path)
prs = pkg.presentation
assert prs is not None
slide_masters = prs.slide_masters
assert slide_masters is not None
assert len(slide_masters) == 1
slide_layouts = slide_masters[0].slide_layouts
assert slide_layouts is not None
assert len(slide_layouts) == 11
def it_knows_the_next_available_image_partname(self, next_fixture):
package, ext, expected_value = next_fixture
partname = package.next_image_partname(ext)
assert partname == expected_value
# fixtures ---------------------------------------------
@pytest.fixture
def image_part_fixture(self, _image_parts_, image_part_):
package = Package()
image_file = 'foobar.png'
package._image_parts.get_or_add_image_part.return_value = image_part_
return package, image_file, image_part_
@pytest.fixture(params=[
((3, 4, 2), 1),
((4, 2, 1), 3),
((2, 3, 1), 4),
])
def next_fixture(self, request, iter_parts_):
idxs, idx = request.param
package = Package()
package.iter_parts.return_value = self.i_image_parts(request, idxs)
ext = 'foo'
expected_value = '/ppt/media/image%d.%s' % (idx, ext)
return package, ext, expected_value
@pytest.fixture
def temp_pptx_path(self, tmpdir):
return absjoin(str(tmpdir), 'test-pptx.pptx')
# fixture components ---------------------------------------------
@pytest.fixture
def image_part_(self, request):
return instance_mock(request, ImagePart)
@pytest.fixture
def _image_parts_(self, request):
return property_mock(request, Package, '_image_parts')
def i_image_parts(self, request, idxs):
def part(idx):
partname = PackURI('/ppt/media/image%d.png' % idx)
return instance_mock(request, Part, partname=partname)
return iter([part(idx) for idx in idxs])
@pytest.fixture
def iter_parts_(self, request):
return property_mock(request, Package, 'iter_parts')
class Describe_ImageParts(object):
def it_can_iterate_over_the_package_image_parts(self, iter_fixture):
image_parts, expected_parts = iter_fixture
assert list(image_parts) == expected_parts
def it_can_get_a_matching_image_part(self, get_fixture):
image_parts, image_file, Image_, image_, image_part_ = get_fixture
image_part = image_parts.get_or_add_image_part(image_file)
Image_.from_file.assert_called_once_with(image_file)
image_parts._find_by_sha1.assert_called_once_with(image_.sha1)
assert image_part is image_part_
def it_can_add_an_image_part(self, add_fixture):
image_parts, image_file, Image_, image_ = add_fixture[:4]
ImagePart_, package_, image_part_ = add_fixture[4:]
image_part = image_parts.get_or_add_image_part(image_file)
Image_.from_file.assert_called_once_with(image_file)
image_parts._find_by_sha1.assert_called_once_with(image_.sha1)
ImagePart_.new.assert_called_once_with(package_, image_)
assert image_part is image_part_
def it_can_find_an_image_part_by_sha1_hash(self, find_fixture):
image_parts, sha1, expected_value = find_fixture
image_part = image_parts._find_by_sha1(sha1)
assert image_part is expected_value
# fixtures ---------------------------------------------
@pytest.fixture
def add_fixture(self, package_, Image_, image_, _find_by_sha1_,
ImagePart_, image_part_):
image_parts = _ImageParts(package_)
image_file = 'foobar.png'
Image_.from_file.return_value = image_
_find_by_sha1_.return_value = None
ImagePart_.new.return_value = image_part_
return (
image_parts, image_file, Image_, image_, ImagePart_, package_,
image_part_
)
@pytest.fixture(params=[True, False])
def find_fixture(self, request, _iter_, image_part_):
image_part_is_present = request.param
image_parts = _ImageParts(None)
_iter_.return_value = iter((image_part_,))
sha1 = 'foobar'
if image_part_is_present:
image_part_.sha1 = 'foobar'
expected_value = image_part_
else:
image_part_.sha1 = 'barfoo'
expected_value = None
return image_parts, sha1, expected_value
@pytest.fixture
def get_fixture(self, Image_, image_, image_part_, _find_by_sha1_):
image_parts = _ImageParts(None)
image_file = 'foobar.png'
Image_.from_file.return_value = image_
_find_by_sha1_.return_value = image_part_
return image_parts, image_file, Image_, image_, image_part_
@pytest.fixture
def iter_fixture(self, request, package_):
def rel(is_external, reltype):
part = instance_mock(request, Part)
return instance_mock(
request, _Relationship, is_external=is_external,
reltype=reltype, target_part=part
)
rels = (
rel(True, RT.IMAGE),
rel(False, RT.SLIDE),
rel(False, RT.IMAGE),
)
package_.iter_rels.return_value = iter(
(rels[0], rels[1], rels[2], rels[2])
)
image_parts = _ImageParts(package_)
expected_parts = [rels[2].target_part]
return image_parts, expected_parts
# fixture components ---------------------------------------------
@pytest.fixture
def _find_by_sha1_(self, request):
return method_mock(request, _ImageParts, '_find_by_sha1')
@pytest.fixture
def Image_(self, request):
return class_mock(request, 'pptx.package.Image')
@pytest.fixture
def image_(self, request):
return instance_mock(request, Image)
@pytest.fixture
def ImagePart_(self, request):
return class_mock(request, 'pptx.package.ImagePart')
@pytest.fixture
def image_part_(self, request):
return instance_mock(request, ImagePart)
@pytest.fixture
def _iter_(self, request):
return method_mock(request, _ImageParts, '__iter__')
@pytest.fixture
def package_(self, request):
return instance_mock(request, Package)