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add some more gifload tests

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This commit is contained in:
John Cupitt 2021-03-28 13:49:34 +01:00
parent b2cfe6a0a0
commit 0054c7dafa
1 changed files with 24 additions and 16 deletions
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40
test/test-suite/test_foreign.py
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@ -811,25 +811,33 @@ class TestForeign:
self.file_loader("gifload", GIF_FILE, gif_valid)
self.buffer_loader("gifload_buffer", GIF_FILE, gif_valid)
# 'n' param added in 8.5
if pyvips.at_least_libvips(8, 5):
x1 = pyvips.Image.new_from_file(GIF_ANIM_FILE)
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=2)
assert x2.height == 2 * x1.height
page_height = x2.get("page-height")
assert page_height == x1.height
# test metadata
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
# our test gif has delay 0 for the first frame set in error
assert x2.get("delay") == [0, 50, 50, 50, 50]
assert x2.get("loop") == 32760
assert x2.get("background") == [255, 255, 255]
# test deprecated fields too
assert x2.get("gif-loop") == 32759
assert x2.get("gif-delay") == 0
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
assert x2.height == 5 * x1.height
# our test gif has delay 0 for the first frame set in error
assert x2.get("delay") == [0, 50, 50, 50, 50]
# test every pixel
x1 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
x2 = pyvips.Image.new_from_file(GIF_ANIM_EXPECTED_PNG_FILE)
assert (x1 - x2).abs().max() == 0
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, page=1, n=-1)
assert x2.height == 4 * x1.height
# test page handling
x1 = pyvips.Image.new_from_file(GIF_ANIM_FILE)
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=2)
assert x2.height == 2 * x1.height
page_height = x2.get("page-height")
assert page_height == x1.height
x1 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
x2 = pyvips.Image.new_from_file(GIF_ANIM_EXPECTED_PNG_FILE)
assert (x1 - x2).abs().max() == 0
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, n=-1)
assert x2.height == 5 * x1.height
x2 = pyvips.Image.new_from_file(GIF_ANIM_FILE, page=1, n=-1)
assert x2.height == 4 * x1.height
@skip_if_no("gifload")
def test_gifload_animation_dispose_background(self):