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# encoding: ASCII-8BIT
# frozen_string_literal: true
require 'spec_helper'
# See PDF Reference, Sixth Edition (1.7) pp51-60 for details
RSpec.describe PDF::Core, '.pdf_object' do
it "converts Ruby's nil to PDF null" do
expect(described_class.pdf_object(nil)).to eq 'null'
end
it 'converts Ruby booleans to PDF booleans' do
expect(described_class.pdf_object(true)).to eq 'true'
expect(described_class.pdf_object(false)).to eq 'false'
end
describe 'numbers' do
it 'converts a n integer to PDF number' do
expect(described_class.pdf_object(42)).to eq '42'
end
it 'rounds a float to five significant digits' do
expect(described_class.pdf_object(1.214117421)).to eq '1.21412'
end
it 'produces no trailing zeroes' do
expect(described_class.pdf_object(1.200000001)).to eq '1.2'
end
end
it 'drops trailing fraction zeros from numbers' do
expect(described_class.pdf_object(42.0)).to eq '42'
# numbers are rounded to four decimal places
expect(described_class.pdf_object(1.200000)).to eq '1.2'
end
it 'converts a Ruby time object to a PDF timestamp' do
t = Time.now
expect(described_class.pdf_object(t))
.to eq "#{t.strftime('(D:%Y%m%d%H%M%S%z').chop.chop}'00')"
end
it 'converts a Ruby string to PDF string when inside a content stream' do
s = 'I can has a string'
expect(PDF::Inspector.parse(described_class.pdf_object(s, true))).to eq s
end
it 'converts a Ruby string to a UTF-16 PDF string when outside of ' \
'a content stream' do
s = 'I can has a string'
s_utf16 = "\xFE\xFF#{s.unpack('U*').pack('n*')}"
parsed_s = PDF::Inspector.parse(described_class.pdf_object(s, false))
expect(parsed_s).to eq s_utf16
end
it 'converts a Ruby string with characters outside the BMP to its ' \
'UTF-16 representation with a BOM' do
# U+10192 ROMAN SEMUNCIA SIGN
semuncia = [65_938].pack('U')
expect(described_class.pdf_object(semuncia, false).upcase)
.to eq '<FEFFD800DD92>'
end
it 'passes through bytes regardless of content stream status for ' \
'ByteString' do
expect(
described_class.pdf_object(PDF::Core::ByteString.new("\xDE\xAD\xBE\xEF"))
.upcase,
).to eq '<DEADBEEF>'
end
it 'escapes parens when converting from Ruby string to PDF' do
s = 'I )(can has a string'
expect(PDF::Inspector.parse(described_class.pdf_object(s, true))).to eq s
end
it 'handles ruby escaped parens when converting to PDF string' do
s = 'I can \\)( has string'
expect(PDF::Inspector.parse(described_class.pdf_object(s, true))).to eq s
end
it 'escapes various strings correctly when converting a LiteralString' do
ls = PDF::Core::LiteralString.new('abc')
expect(described_class.pdf_object(ls)).to eq '(abc)'
ls = PDF::Core::LiteralString.new("abc\x0Dde") # should escape \r
expect(described_class.pdf_object(ls)).to eq "(abc\x5Crde)"
ls = PDF::Core::LiteralString.new('abc(de') # should escape \(
expect(described_class.pdf_object(ls)).to eq "(abc\x5C(de)"
ls = PDF::Core::LiteralString.new('abc)de') # should escape \)
expect(described_class.pdf_object(ls)).to eq "(abc\x5C)de)"
ls = PDF::Core::LiteralString.new("abc\x5Cde") # should escape \\
expect(described_class.pdf_object(ls)).to eq "(abc\x5C\x5Cde)"
expect(described_class.pdf_object(ls).size).to eq 9
end
it 'escapes strings correctly when converting a LiteralString that is ' \
'not utf-8' do
data = "\x43\xaf\xc9\x7f\xef\xf\xe6\xa8\xcb\x5c\xaf\xd0"
ls = PDF::Core::LiteralString.new(data)
expect(described_class.pdf_object(ls))
.to eq "(\x43\xaf\xc9\x7f\xef\xf\xe6\xa8\xcb\x5c\x5c\xaf\xd0)"
end
it 'converts a Ruby symbol to PDF name' do
expect(described_class.pdf_object(:my_symbol)).to eq '/my_symbol'
expect(
described_class.pdf_object(:'A;Name_With-Various***Characters?'),
).to eq '/A;Name_With-Various***Characters?'
end
it 'converts a whitespace or delimiter containing Ruby symbol to ' \
'a PDF name' do
expect(described_class.pdf_object(:'my symbol')).to eq '/my#20symbol'
expect(described_class.pdf_object(:'my#symbol')).to eq '/my#23symbol'
expect(described_class.pdf_object(:'my/symbol')).to eq '/my#2Fsymbol'
expect(described_class.pdf_object(:'my(symbol')).to eq '/my#28symbol'
expect(described_class.pdf_object(:'my)symbol')).to eq '/my#29symbol'
expect(described_class.pdf_object(:'my<symbol')).to eq '/my#3Csymbol'
expect(described_class.pdf_object(:'my>symbol')).to eq '/my#3Esymbol'
end
it 'converts a Ruby array to PDF Array when inside a content stream' do
expect(described_class.pdf_object([1, 2, 3])).to eq '[1 2 3]'
expect(
PDF::Inspector.parse(
described_class.pdf_object([[1, 2], :foo, 'Bar'], true),
),
).to eq [[1, 2], :foo, 'Bar']
end
it 'converts a Ruby array to PDF Array when outside a content stream' do
expect(described_class.pdf_object([1, 2, 3])).to eq '[1 2 3]'
bar = "\xFE\xFF\x00B\x00a\x00r"
expect(
PDF::Inspector.parse(
described_class.pdf_object([[1, 2], :foo, 'Bar'], false),
),
).to eq [[1, 2], :foo, bar]
end
it 'converts a Ruby hash to a PDF Dictionary when inside a content stream' do
dict = described_class.pdf_object(
{
:foo => :bar,
'baz' => [1, 2, 3],
:bang => { a: 'what', b: %i[you say] },
},
true,
)
res = PDF::Inspector.parse(dict)
expect(res[:foo]).to eq :bar
expect(res[:baz]).to eq [1, 2, 3]
expect(res[:bang]).to eq(a: 'what', b: %i[you say])
end
it 'converts a Ruby hash to a PDF Dictionary when outside a content stream' do
what = "\xFE\xFF\x00w\x00h\x00a\x00t"
dict = described_class.pdf_object(
{
foo: :bar,
'baz' => [1, 2, 3],
bang: { a: 'what', b: %i[you say] },
},
false,
)
res = PDF::Inspector.parse(dict)
expect(res[:foo]).to eq :bar
expect(res[:baz]).to eq [1, 2, 3]
expect(res[:bang]).to eq(a: what, b: %i[you say])
end
it 'does not allow keys other than strings or symbols for PDF dicts' do
expect { described_class.pdf_object(:foo => :bar, :baz => :bang, 1 => 4) }
.to raise_error(PDF::Core::Errors::FailedObjectConversion)
end
it 'uses stable key order in PDF dicts' do
expect(described_class.pdf_object(a: 1, b: 2)).to eq described_class.pdf_object(b: 2, a: 1)
end
it 'orders entris alphabetically in PDF dicts' do
expect(described_class.pdf_object(b: 2, a: 1)).to eq "<< /a 1\n/b 2\n>>"
end
it 'converts a Prawn::Reference to a PDF indirect object reference' do
ref = PDF::Core::Reference.new(1, true)
expect(described_class.pdf_object(ref)).to eq ref.to_s
end
it 'converts a NameTree::Node to a PDF hash' do
# FIXME: Soft dependency on Prawn::Document exists in Node
node = PDF::Core::NameTree::Node.new(nil, 10)
node.add('hello', 1.0)
node.add('world', 2.0)
data = described_class.pdf_object(node)
res = PDF::Inspector.parse(data)
expect(res).to eq(Names: ['hello', 1.0, 'world', 2.0])
end
end
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