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https://github.com/python-pillow/Pillow.git
synced 2024-09-21 11:28:58 +03:00
more verbose testing, checking for g4 compression
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parent
35ce34a5fa
commit
03dcb5c557
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@ -63,24 +63,21 @@ def _assert_noerr(im):
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"""Helper tests that assert basic sanity about the g4 tiff reading"""
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"""Helper tests that assert basic sanity about the g4 tiff reading"""
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#1 bit
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#1 bit
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assert_equal(im.mode, "1")
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assert_equal(im.mode, "1")
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# Does the data actually load
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# Does the data actually load
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assert_no_exception(lambda: im.load())
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assert_no_exception(lambda: im.load())
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assert_no_exception(lambda: im.getdata())
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assert_no_exception(lambda: im.getdata())
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try:
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assert_equal(im._compression, 'group4')
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except:
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print "No _compression"
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print (dir(im))
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# can we write it back out, in a different form.
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# can we write it back out, in a different form.
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out = tempfile("temp.png")
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out = tempfile("temp.png")
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assert_no_exception(lambda: im.save(out))
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assert_no_exception(lambda: im.save(out))
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def _compare_images(img, ref):
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"""Compares the image to the reference, using 1000 sampled points"""
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imgdata = img.getdata()
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refdata = ref.getdata()
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assert_equal(len(imgdata), len(refdata))
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randitems = random.sample(range(len(imgdata)), 1000)
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assert_equal([imgdata[i] for i in randitems],
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[refdata[i] for i in randitems])
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def test_g4_tiff():
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def test_g4_tiff():
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"""Test the ordinary file path load path"""
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"""Test the ordinary file path load path"""
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@ -95,7 +92,7 @@ def test_g4_large():
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im = Image.open(file)
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im = Image.open(file)
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_assert_noerr(im)
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_assert_noerr(im)
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def test_g4_tiff_string():
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def test_g4_tiff_file():
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"""Testing the string load path"""
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"""Testing the string load path"""
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file = "Tests/images/lena_g4_500.tif"
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file = "Tests/images/lena_g4_500.tif"
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@ -118,7 +115,7 @@ def test_g4_tiff_stringio():
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assert_equal(im.size, (500,500))
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assert_equal(im.size, (500,500))
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_assert_noerr(im)
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_assert_noerr(im)
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def xtest_g4_tiff_fail(): # UNDONE fails badly, unknown reason
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def test_g4_tiff_fail(): # UNDONE fails badly, unknown reason
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"""The 128x128 lena image fails for some reason. Investigating"""
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"""The 128x128 lena image fails for some reason. Investigating"""
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Image.DEBUG = True
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Image.DEBUG = True
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@ -138,14 +135,21 @@ def test_g4_eq_png():
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def test_g4_write():
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def test_g4_write():
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"""Checking to see that the saved image is the same as what we wrote"""
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"""Checking to see that the saved image is the same as what we wrote"""
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Image.DEBUG = True
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file = "Tests/images/lena_g4_500.tif"
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file = "Tests/images/lena_g4_500.tif"
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orig = Image.open(file)
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orig = Image.open(file)
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out = "temp.tif"
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out = "temp.tif"
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rot = orig.transpose(Image.ROTATE_90)
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rot = orig.transpose(Image.ROTATE_90)
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assert_equal(rot.size,(500,500))
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rot.save(out)
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rot.save(out)
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reread = Image.open(out)
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reread = Image.open(out)
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assert_equal(reread.size,(500,500))
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_assert_noerr(reread)
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assert_image_equal(reread, rot)
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assert_image_equal(reread, rot)
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assert_false(orig.tobytes() == reread.tobytes())
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assert_false(orig.tobytes() == reread.tobytes())
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Image.DEBUG = False
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