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RSpec.describe Magick::Draw, '#annotate' do
it 'works' do
draw = described_class.new
image = Magick::Image.new(10, 10)
draw.annotate(image, 0, 0, 0, 20, 'Hello world')
yield_obj = nil
draw.annotate(image, 100, 100, 20, 20, 'Hello world 2') do |draw2|
yield_obj = draw2
end
expect(yield_obj).to be_instance_of(described_class)
expect do
image = Magick::Image.new(10, 10)
draw.annotate(image, 0, 0, 0, 20, nil)
end.to raise_error(TypeError)
expect { draw.annotate('x', 0, 0, 0, 20, 'Hello world') }.to raise_error(NoMethodError)
end
it 'works with string started with @ (issue 38)', unsupported_before('6.9.0') do
draw = described_class.new
image = Magick::Image.new(10, 10)
expect { draw.annotate(image, 0, 0, 0, 20, '@Hello world') }.not_to raise_error
yield_obj = nil
draw.annotate(image, 100, 100, 20, 20, '@Hello world 2') do |draw2|
yield_obj = draw2
end
expect(yield_obj).to be_instance_of(described_class)
end
it 'accepts an ImageList argument' do
draw = described_class.new
image_list = Magick::ImageList.new
image_list.new_image(10, 10)
expect { draw.annotate(image_list, 0, 0, 0, 20, 'Hello world') }.not_to raise_error
end
it 'does not trigger a buffer overflow' do
draw = described_class.new
expect do
if 1.size == 8
# 64-bit environment can use larger value for Integer and it can cause
# a stack buffer overflow.
image = Magick::Image.new(10, 10)
draw.annotate(image, 2**63, 2**63, 2**62, 2**62, 'Hello world')
end
end.not_to raise_error
end
end
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