def test_aresize_height(self):
"""
Ensure landscape aresize action thumbnails to height and center-crops.
"""
renderer = LazyThumbRenderer()
mock_img = MockImg(width=2000, height=1000)
mock_Image = Mock()
# aresize 2000x1000 => 1000x800 should thumbnail to 1600x800 and then
# paste into the center of a new image, losing some left/right content.
with patch('lazythumbs.views.Image', mock_Image):
img = renderer.aresize(width=1000, height=800, img=mock_img)
self.assertEqual(mock_img.called, ['resize'])
self.assertEqual(img, mock_Image.new.return_value)
self.assertEqual(mock_Image.new.call_args[1]['size'], (1000, 800))
img.paste.assert_called_once_with(mock_img, (-300, 0))
def test_aresize_width(self):
"""
Ensure landscape aresize action thumbnails to width and center-crops.
"""
renderer = LazyThumbRenderer()
mock_img = MockImg(width=1500, height=1000)
mock_Image = Mock()
# aresize 1500x1000 => 750x400 should thumbnail to 750x500 and then
# paste into the center of a new image, losing some top/bottom content.
with patch('lazythumbs.views.Image', mock_Image):
img = renderer.aresize(width=750, height=400, img=mock_img)
self.assertEqual(mock_img.called, ['resize'])
self.assertEqual(img, mock_Image.new.return_value)
self.assertEqual(mock_Image.new.call_args[1]['size'], (750, 400))
img.paste.assert_called_once_with(mock_img, (0, -50))
def test_aresize_no_crop_small(self):
"""
Ensure aresize_no_crop action does not grow a small image.
"""
renderer = LazyThumbRenderer()
mock_img = MockImg(width=100, height=80)
mock_Image = Mock()
# aresize_no_crop 100x80 => 300x200 should not resize, but should paste
# into the center of a new image, leaving matte background content
# on the sides.
with patch('lazythumbs.views.Image', mock_Image):
img = renderer.aresize(width=300, height=200, img=mock_img)
self.assertEqual(mock_img.called, [])
self.assertEqual(img, mock_Image.new.return_value)
self.assertEqual(mock_Image.new.call_args[1]['size'], (300, 200))
img.paste.assert_called_once_with(mock_img, (100, 60))
def test_aresize_portrait(self):
"""
Ensure aresize action from portrait to landscape shrinks image and
mattes sides.
"""
renderer = LazyThumbRenderer()
mock_img = MockImg(width=1000, height=2000)
mock_Image = Mock()
# aresize 1000x2000 => 600x500 should thumbnail to 250x500 and then
# paste into the center of a new image, leaving matte background
# content on the sides.
with patch('lazythumbs.views.Image', mock_Image):
img = renderer.aresize(width=600, height=500, img=mock_img)
self.assertEqual(mock_img.called, ['resize'])
self.assertEqual(img, mock_Image.new.return_value)
self.assertEqual(mock_Image.new.call_args[1]['size'], (600, 500))
img.paste.assert_called_once_with(mock_img, (175, 0))
