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# encoding: utf-8
require File.join(File.expand_path(File.dirname(__FILE__)), "spec_helper")
describe "A Reference object" do
it "should produce a PDF reference on #to_s call" do
ref = Prawn::Core::Reference(1,true)
ref.to_s.should == "1 0 R"
end
it "should allow changing generation number" do
ref = Prawn::Core::Reference(1,true)
ref.gen = 1
ref.to_s.should == "1 1 R"
end
it "should generate a valid PDF object for the referenced data" do
ref = Prawn::Core::Reference(2,[1,"foo"])
ref.object.should == "2 0 obj\n#{Prawn::Core::PdfObject([1,"foo"])}\nendobj\n"
end
it "should automatically open a stream when #<< is used" do
ref = Prawn::Core::Reference(1, :Length => 41)
ref << "BT\n/F1 12 Tf\n72 712 Td\n( A stream ) Tj\nET"
ref.object.should == "1 0 obj\n<< /Length 41\n>>\nstream"+
"\nBT\n/F1 12 Tf\n72 712 Td\n( A stream ) Tj\nET" +
"\nendstream\nendobj\n"
end
it "should compress a stream upon request" do
ref = Prawn::Core::Reference(2,{})
ref << "Hi There " * 20
cref = Prawn::Core::Reference(2,{})
cref << "Hi There " * 20
cref.compress_stream
assert cref.stream.size < ref.stream.size,
"compressed stream expected to be smaller than source but wasn't"
cref.data[:Filter].should == :FlateDecode
end
it "should copy the data and stream from another ref on #replace" do
from = Prawn::Core::Reference(3, {:foo => 'bar'})
from << "has a stream too"
to = Prawn::Core::Reference(4, {:foo => 'baz'})
to.replace from
# should preserve identifier but copy data and stream
to.identifier.should == 4
to.data.should == from.data
to.stream.should == from.stream
end
it "should copy a compressed stream from a compressed ref on #replace" do
from = Prawn::Core::Reference(5, {:foo => 'bar'})
from << "has a stream too " * 20
from.compress_stream
to = Prawn::Core::Reference(6, {:foo => 'baz'})
to.replace from
to.identifier.should == 6
to.data.should == from.data
to.stream.should == from.stream
to.compressed?.should == true
end
describe "generated via Prawn::Document" do
it "should return a proper reference on ref!" do
pdf = Prawn::Document.new
pdf.ref!({}).is_a?(Prawn::Core::Reference).should == true
end
it "should return an identifier on ref" do
pdf = Prawn::Document.new
r = pdf.ref({})
r.is_a?(Integer).should == true
end
end
end
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