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import unittest
import pgmagick
from pgmagick import Blob, Image, Geometry, Color, LineJoin, StorageType, FilterTypes
from pgmagick import ChannelType
from pgmagick import gminfo
if gminfo.library == 'ImageMagick':
from pgmagick import DistortImageMethod, SparseColorMethod
libgm_version = [int(v) for v in pgmagick.gminfo().version.split('.')]
class TestImage(unittest.TestCase):
def test_noarg_init(self):
im = Image()
self.assertEqual(type(im), Image)
def test_fromfile_init_error(self):
self.assertRaises(RuntimeError, Image, "xXxX.jpg")
def test_size_and_color_init(self):
im = Image(Geometry(300, 200), Color('transparent'))
size = im.size()
self.assertEqual(300, size.width())
self.assertEqual(200, size.height())
def test_stroke_linejoin(self):
im = Image(Geometry(300, 200), Color('transparent'))
im.strokeLineJoin(LineJoin.MiterJoin)
im.strokeLineJoin(LineJoin.RoundJoin)
im.strokeLineJoin(LineJoin.BevelJoin)
def getpixels_test_template(self, use_const):
img = Image(Geometry(300, 200), Color('transparent'))
getPixelsMethod = img.getConstPixels if use_const else img.getPixels
pixels = getPixelsMethod(40, 50, 10, 10)
self.assertEqual(10 * 10, len(pixels))
with self.assertRaises(IndexError):
pixels[2000]
colorMax = Color.scaleDoubleToQuantum(1.0)
self.assertEqual(0, pixels[0].red)
self.assertEqual(0, pixels[0].blue)
self.assertEqual(0, pixels[0].green)
self.assertEqual(colorMax, pixels[0].opacity)
return pixels
def test_image_getpixels(self):
self.getpixels_test_template(use_const=False)
def test_image_getconstpixels(self):
pixels = self.getpixels_test_template(use_const=True)
# either throw AttributeError (write to readonly field)
# or at least don't update original data (elements returned by indexing are cloned)
try:
pixels[0].red = 50
self.assertEqual(pixels[0].red, 0)
except AttributeError:
pass
def test_image_setpixels(self):
img = Image(Geometry(300, 200), Color('transparent'))
pixels = img.setPixels(40, 50, 5, 5)
for pixel in pixels:
pixel.red = 50
img.syncPixels()
for pixel in img.getPixels(40, 50, 5, 5):
self.assertEqual(50, pixel.red)
def test_image_init_storagetype(self):
data = ["0" for i in range(10000)]
img = Image(100, 100, "RGB", StorageType.CharPixel, "".join(data))
del(img)
def test_image_init_RGBA_XWD_header(self):
data = b"\0\0\0\0\4\0\0\0" + 92 * b"\0"
img = Image(5, 5, "RGBA", StorageType.CharPixel, data)
self.assertEqual(5, img.size().height())
self.assertEqual(5, img.size().width())
@unittest.skip("do not know how to use haldClut method")
def test_haldClut(self):
img = Image()
if hasattr(img, "haldClut"):
clutimg = Image(Geometry(512, 512), Color('transparent'))
img.haldClut(clutimg)
@unittest.skipIf(libgm_version < [1, 3, 21], "not support gm version: %s" % str(libgm_version))
def test_extent(self):
im = Image(Geometry(300, 200), Color('transparent'))
g = Geometry(10, 10)
im.extent(g)
@unittest.skipIf(libgm_version < [1, 3, 19], "not support gm version: %s" % str(libgm_version))
def test_image_thumbnail(self):
im = Image(Geometry(300, 200), Color('transparent'))
g = Geometry(150, 100)
im.thumbnail(g)
@unittest.skipIf(libgm_version < [1, 3, 22], "not support gm version: %s" % str(libgm_version))
def test_image_resize(self):
im = Image(Geometry(300, 200), Color('transparent'))
g = Geometry(150, 100)
ft = FilterTypes.BlackmanFilter
blur = 0.5
im.resize(g, ft, blur)
im.resize(g, ft)
im.resize(g)
def test_color_histogram(self):
redColor = Color('red')
im = Image(Geometry(30, 20), redColor)
histogram = im.colorHistogram()
self.assertEqual(1, len(histogram))
# test in, __getitem__
self.assertIn(redColor, histogram)
self.assertEqual(30 * 20, histogram[redColor])
# iteration example
for packet in histogram:
color, count = packet.key(), packet.data()
self.assertEqual(redColor, color)
self.assertEqual(30 * 20, count)
class TestIMImage(unittest.TestCase):
def setUp(self):
self.img = Image()
self.is_imagemagick = False
if gminfo.library == 'ImageMagick':
self.is_imagemagick = True
def test_adaptiveBlur(self):
if self.is_imagemagick:
self.img.adaptiveBlur()
def test_distort(self):
if self.is_imagemagick:
self.img.distort(DistortImageMethod.ScaleRotateTranslateDistortion,
1, 1.0, True)
def test_inverseFourierTransform(self):
if self.is_imagemagick:
phase = Image()
self.img.inverseFourierTransform(phase)
def test_sigmoidalContrast(self):
if self.is_imagemagick:
self.img.sigmoidalContrast(2, 2.)
def test_splice(self):
if self.is_imagemagick:
self.img.splice(Geometry(100, 100))
def test_sparseColor(self):
if self.is_imagemagick:
self.img.sparseColor(ChannelType.RedChannel,
SparseColorMethod.PolynomialColorInterpolate,
1, 1.)
def test_exif_profile(self):
if self.is_imagemagick:
ret = self.img.exifProfile()
self.assertEqual(type(ret), type(pgmagick._pgmagick.Blob()))
def test_virtualPixelMethod(self):
if self.is_imagemagick:
ret = self.img.virtualPixelMethod()
self.assertEqual(type(ret),
type(pgmagick._pgmagick.VirtualPixelMethod()))
class TestImageWithBlob(unittest.TestCase):
def test_fromblob(self):
with open('../example/X.jpg', 'rb') as f:
data = f.read()
self.assertEqual(True, type(data) in (bytes, str))
b = Blob(data)
img = Image(b)
img.write('X2.jpg')
self.assertEqual(type(img), Image)
unittest.main()
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