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# Copyright (C) 2025 Ruby-GNOME Project Team
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
require "stringio"
class TestRenderNode < Test::Unit::TestCase
def setup
width = 1
height = 1
rgba = Gdk::RGBA.new(1.0, 0.0, 0.0, 1.0)
bounds = Graphene::Rect.new(0, 0, width, height)
@node = Gsk::ColorNode.new(rgba, bounds)
@surface = Cairo::ImageSurface.new(:ARGB32, width, height)
@context = Cairo::Context.new(@surface)
end
def test_draw
@node.draw(@context)
argbs = @surface.data.unpack("L*").collect do |argb|
# [alpha (8 bits), red (8 bits), green (8 bits), blue (8 bits)]
lower_8_bits_mask = (1 << 8) - 1
[
argb >> 24,
(argb >> 16) & lower_8_bits_mask,
(argb >> 8) & lower_8_bits_mask,
argb & lower_8_bits_mask,
]
end
assert_equal([[255, 255, 0, 0]],
argbs)
end
end
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