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Pixel.rb
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Pixel.rb
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#! /usr/local/bin/ruby -w
require 'RMagick'
require 'test/unit'
require 'test/unit/ui/console/testrunner'
class Pixel_UT < Test::Unit::TestCase
def setup
@pixel = Magick::Pixel.from_color('brown')
end
def test_hash
hash = nil
assert_nothing_raised { hash = @pixel.hash}
assert_not_nil(hash)
assert_equal(-761981696, hash)
p = Magick::Pixel.new
assert_equal(0, p.hash)
p = Magick::Pixel.from_color('red')
assert_equal(-8388608, p.hash)
# Pixel.hash sacrifices the last bit of the opacity channel
p = Magick::Pixel.new(0, 0, 0, 72)
p2 = Magick::Pixel.new(0, 0, 0, 73)
assert_not_equal(p, p2)
assert_equal(p.hash, p2.hash)
end
def test_eql?
p = @pixel
assert(@pixel.eql?(p))
p = Magick::Pixel.new
assert(!@pixel.eql?(p))
end
def test_fcmp
red = Magick::Pixel.from_color('red')
blue = Magick::Pixel.from_color('blue')
assert_nothing_raised { red.fcmp(red) }
assert(red.fcmp(red))
assert(! red.fcmp(blue) )
assert_nothing_raised { red.fcmp(blue, 10) }
assert_nothing_raised { red.fcmp(blue, 10, Magick::RGBColorspace) }
assert_raises(TypeError) { red.fcmp(blue, 'x') }
assert_raises(TypeError) { red.fcmp(blue, 10, 'x') }
end
end