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RSpec.describe Magick::Image, '#filter' do
it 'works' do
image = described_class.new(100, 100)
expect { image.filter }.not_to raise_error
expect(image.filter).to be_instance_of(Magick::FilterType)
expect(image.filter).to eq(Magick::UndefinedFilter)
expect { image.filter = Magick::PointFilter }.not_to raise_error
expect(image.filter).to eq(Magick::PointFilter)
Magick::FilterType.values do |filter|
expect { image.filter = filter }.not_to raise_error
end
expect { image.filter = 2 }.to raise_error(TypeError)
end
end
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