def test_construction_from_file(self):
"""Image(path) constructor produces correct attribute values"""
# exercise ---------------------
partname = PackURI('/ppt/media/image1.jpeg')
image = Image.new(partname, test_image_path)
# verify -----------------------
assert_that(image.ext, is_(equal_to('jpeg')))
assert_that(image.content_type, is_(equal_to('image/jpeg')))
assert_that(len(image._blob), is_(equal_to(3277)))
assert_that(image._desc, is_(equal_to('python-icon.jpeg')))
def test_construction_from_file(self):
"""Image(path) constructor produces correct attribute values"""
# exercise ---------------------
partname = PackURI('/ppt/media/image1.jpeg')
image = Image.new(partname, test_image_path)
# verify -----------------------
assert image.ext == 'jpeg'
assert image.content_type == 'image/jpeg'
assert len(image._blob) == 3277
assert image._desc == 'python-icon.jpeg'
def test_construction_from_file(self):
"""Image(path) constructor produces correct attribute values"""
# exercise ---------------------
partname = PackURI('/ppt/media/image1.jpeg')
image = Image.new(partname, test_image_path)
# verify -----------------------
assert image.ext == 'jpeg'
assert image.content_type == 'image/jpeg'
assert len(image._blob) == 3277
assert image._desc == 'python-icon.jpeg'
def test_construction_from_stream(self):
"""Image(stream) construction produces correct attribute values"""
# exercise ---------------------
partname = PackURI('/ppt/media/image1.jpeg')
with open(test_image_path, 'rb') as f:
stream = StringIO(f.read())
image = Image.new(partname, stream)
# verify -----------------------
assert image.ext == 'jpg'
assert image.content_type == 'image/jpeg'
assert len(image._blob) == 3277
assert image._desc == 'image.jpg'
def test_construction_from_stream(self):
"""Image(stream) construction produces correct attribute values"""
# exercise ---------------------
partname = PackURI('/ppt/media/image1.jpeg')
with open(test_image_path, 'rb') as f:
stream = StringIO(f.read())
image = Image.new(partname, stream)
# verify -----------------------
assert_that(image.ext, is_(equal_to('jpg')))
assert_that(image.content_type, is_(equal_to('image/jpeg')))
assert_that(len(image._blob), is_(equal_to(3277)))
assert_that(image._desc, is_(equal_to('image.jpg')))
def test__scale_calculates_correct_dimensions(self):
"""Image._scale() calculates correct dimensions"""
# setup ------------------------
test_cases = (((None, None), (Px(204), Px(204))), ((1000, None),
(1000, 1000)),
((None, 3000), (3000, 3000)), ((3337, 9999), (3337,
9999)))
partname = PackURI('/ppt/media/image1.png')
image = Image.new(partname, test_image_path)
# verify -----------------------
for params, expected in test_cases:
width, height = params
assert image._scale(width, height) == expected
def test__scale_calculates_correct_dimensions(self):
"""Image._scale() calculates correct dimensions"""
# setup ------------------------
test_cases = (
((None, None), (Px(204), Px(204))),
((1000, None), (1000, 1000)),
((None, 3000), (3000, 3000)),
((3337, 9999), (3337, 9999)))
partname = PackURI('/ppt/media/image1.png')
image = Image.new(partname, test_image_path)
# verify -----------------------
for params, expected in test_cases:
width, height = params
assert_that(image._scale(width, height), is_(equal_to(expected)))
def test__size_returns_image_native_pixel_dimensions(self):
"""Image._size is width, height tuple of image pixel dimensions"""
partname = PackURI('/ppt/media/image1.png')
image = Image.new(partname, test_image_path)
assert image._size == (204, 204)
def test_construction_from_file_raises_on_bad_path(self):
"""Image(path) constructor raises on bad path"""
partname = PackURI('/ppt/media/image1.jpeg')
with self.assertRaises(IOError):
Image.new(partname, 'foobar27.png')
def test__size_returns_image_native_pixel_dimensions(self):
"""Image._size is width, height tuple of image pixel dimensions"""
partname = PackURI('/ppt/media/image1.png')
image = Image.new(partname, test_image_path)
assert_that(image._size, is_(equal_to((204, 204))))
def test_construction_from_file_raises_on_bad_path(self):
"""Image(path) constructor raises on bad path"""
partname = PackURI('/ppt/media/image1.jpeg')
with self.assertRaises(IOError):
Image.new(partname, 'foobar27.png')
