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require 'cairo'
class PaperTest < Test::Unit::TestCase
def test_parse_paper
a4 = Cairo::Paper::A4
assert_parse(a4, a4)
end
def test_parse_name
assert_parse(:A4, "A4")
assert_parse(:A4_LANDSCAPE, "A4 landscape")
assert_parse(:A4, :A4)
assert_parse(:A4, :a4)
assert_parse(:JAPANESE_POSTCARD, :japanese_postcard)
assert_parse(:JAPANESE_POSTCARD, "japanese-postcard")
assert_parse(:JAPANESE_POSTCARD, "Japanese postcard")
exception = assert_raise(Cairo::Paper::UnknownPaperName) do
Cairo::Paper.parse(:nonexistence)
end
assert_equal(:nonexistence, exception.name)
end
def test_parse_size
assert_parse(paper(100, 200), "100x200")
assert_parse(paper(283.46456664, 566.929134), "100mmx200mm")
assert_parse(paper(284.88188952, 200.9), "100.5mmx200.9")
assert_parse(paper(72, 612.0), "1inx8.5inch")
assert_parse(paper(28.346456664, 24094.488168), "1cmx8.5m")
assert_parse(paper(100, 200), [100, 200])
exception = assert_raise(Cairo::Paper::UnknownUnit) do
Cairo::Paper.parse("100kmx100")
end
assert_equal("km", exception.unit)
end
def test_parse_size_with_name
assert_parse(paper(28.346456664, 24094.488168, nil, "Name"),
"1cmx8.5m#Name")
end
def test_unrecognized_input
assert_nothing_raised do
Cairo::Paper.parse({})
end
exception = assert_raise(Cairo::Paper::UnrecognizedPaperDescription) do
Cairo::Paper.parse({}, true)
end
assert_equal({}, exception.description)
end
def test_unit
paper = parse("1cmx8.5m")
assert_nil(paper.unit)
assert_in_delta(28.346456664, 0.01, paper.width)
assert_in_delta(24094.488168, 0.01, paper.height)
paper.unit = "inch"
assert_equal("inch", paper.unit)
assert_in_delta(0.393700787, 0.01, paper.width)
assert_in_delta(334.645669, 0.01, paper.height)
end
private
def paper(width, height, *rest)
Cairo::Paper.new(width, height, *rest)
end
def parse(paper_description)
Cairo::Paper.parse(paper_description)
end
def assert_parse(expected, paper_description, message=nil)
expected = Cairo::Paper.const_get(expected) if expected.is_a?(Symbol)
actual_paper = parse(paper_description)
assert_equal(expected, actual_paper, message)
end
end
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