64 lines
1.9 KiB
Ruby
64 lines
1.9 KiB
Ruby
require "test_helper"
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class APNGInspectorTest < ActiveSupport::TestCase
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def inspect(filename)
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apng = APNGInspector.new("#{Rails.root}/test/files/apng/#{filename}")
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apng.inspect!
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apng
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end
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context "APNG inspector" do
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should "correctly parse normal APNG file" do
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apng = inspect('normal_apng.png')
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assert_equal(3, apng.frames)
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assert_equal(true, apng.animated?)
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assert_equal(false, apng.corrupted?)
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end
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should "recognize 1-frame APNG as animated" do
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apng = inspect('single_frame.png')
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assert_equal(1, apng.frames)
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assert_equal(true, apng.animated?)
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assert_equal(false, apng.corrupted?)
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end
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should "correctly parse normal PNG file" do
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apng = inspect('not_apng.png')
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assert_equal(false, apng.animated?)
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assert_equal(false, apng.corrupted?)
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end
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should "handle empty file" do
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apng = inspect('empty.png')
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assert_equal(false, apng.animated?)
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assert_equal(true, apng.corrupted?)
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end
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should "handle corrupted files" do
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apng = inspect('iend_missing.png')
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assert_equal(false, apng.animated?)
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assert_equal(true, apng.corrupted?)
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apng = inspect('misaligned_chunks.png')
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assert_equal(false, apng.animated?)
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assert_equal(true, apng.corrupted?)
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apng = inspect('broken.png')
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assert_equal(false, apng.animated?)
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assert_equal(true, apng.corrupted?)
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end
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should "handle incorrect acTL chunk" do
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apng = inspect('actl_wronglen.png')
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assert_equal(false, apng.animated?)
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assert_equal(true, apng.corrupted?)
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apng = inspect('actl_zero_frames.png')
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assert_equal(false, apng.animated?)
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assert_equal(true, apng.corrupted?)
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end
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should "handle non-png files" do
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apng = inspect('jpg.png')
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assert_equal(false, apng.animated?)
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assert_equal(true, apng.corrupted?)
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end
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end
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end
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