def test_process_image_width():
ctx = Context()
ctx.image_max_width = 200
ctx.image_extras = '{width="10cm"}'
image._process_image_width(ctx)
assert ctx.image_extras == '{width="100mm"}'
def test_process_image_width_no_width_given():
ctx = Context()
ctx.image_max_width = 100
ctx.image_extras = ''
image._process_image_width(ctx)
assert ctx.image_extras == '{width="100mm"}'