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# coding: utf-8
require File.dirname(__FILE__) + "/spec_helper"
describe PDF::Reader::ObjectHash do
it "should have enumerable mixed in" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.map { |ref, obj| obj.class }.size.should eql(57)
end
end
describe PDF::Reader::ObjectHash do
it "should correctly load a PDF from a StringIO object" do
filename = pdf_spec_file("cairo-unicode")
io = StringIO.new(binread(filename))
h = PDF::Reader::ObjectHash.new(io)
h.map { |ref, obj| obj.class }.size.should eql(57)
end
it "should raise an ArgumentError if passed a non filename and non IO" do
filename = pdf_spec_file("cairo-unicode")
lambda {PDF::Reader::ObjectHash.new(10)}.should raise_error(ArgumentError)
end
end
describe PDF::Reader::ObjectHash, "[] method" do
it "should return nil for any invalid hash key" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h[-1].should be_nil
h[nil].should be_nil
h["James"].should be_nil
end
it "should return nil for any hash key that doesn't exist" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h[10000].should be_nil
end
it "should correctly extract an int object using int or string keys" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h[3].should eql(3649)
h["3"].should eql(3649)
h["3james"].should eql(3649)
end
it "should correctly extract an int object using PDF::Reference as a key" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
ref = PDF::Reader::Reference.new(3,0)
h[ref].should eql(3649)
end
end
describe PDF::Reader::ObjectHash, "object method" do
it "should return regular objects unchanged" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.object(-1).should eql(-1)
h.object(nil).should be_nil
h.object("James").should eql("James")
end
it "should translate reference objects into an extracted PDF object" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.object(PDF::Reader::Reference.new(3,0)).should eql(3649)
end
end
describe PDF::Reader::ObjectHash, "deref! method" do
let(:hash) do
PDF::Reader::ObjectHash.new pdf_spec_file("cairo-unicode")
end
it "should return regular objects unchanged" do
hash.deref!(-1).should eql(-1)
hash.deref!(nil).should be_nil
hash.deref!("James").should eql("James")
end
it "should translate reference objects into an extracted PDF object" do
hash.deref!(PDF::Reader::Reference.new(3,0)).should eq 3649
end
it "should recursively dereference references within hashes" do
font_descriptor = hash.deref! PDF::Reader::Reference.new(17, 0)
font_descriptor[:FontFile3].should be_an_instance_of \
PDF::Reader::Stream
end
it "should recursively dereference references within stream hashes" do
font_file = hash.deref! PDF::Reader::Reference.new(15, 0)
font_file.hash[:Length].should eq 2103
end
it "should recursively dereference references within arrays" do
font = hash.deref! PDF::Reader::Reference.new(19, 0)
font[:DescendantFonts][0][:Subtype].should eq :CIDFontType0
end
it "should return a new Hash, not mutate the provided Hash" do
orig_collection = {}
new_collection = hash.deref!(orig_collection)
orig_collection.object_id.should_not == new_collection.object_id
end
it "should return a new Array, not mutate the provided Array" do
orig_collection = []
new_collection = hash.deref!(orig_collection)
orig_collection.object_id.should_not == new_collection.object_id
end
end
describe PDF::Reader::ObjectHash, "fetch method" do
it "should raise IndexError for any invalid hash key when no default is provided" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
lambda { h.fetch(-1) }.should raise_error(IndexError)
lambda { h.fetch(nil) }.should raise_error(IndexError)
lambda { h.fetch("James") }.should raise_error(IndexError)
end
it "should return default for any hash key that doesn't exist when a default is provided" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.fetch(10000, "default").should eql("default")
end
it "should correctly extract an int object using int or string keys" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.fetch(3).should eql(3649)
h.fetch("3").should eql(3649)
h.fetch("3james").should eql(3649)
end
it "should correctly extract an int object using PDF::Reader::Reference keys" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
ref = PDF::Reader::Reference.new(3,0)
h.fetch(ref).should eql(3649)
end
end
describe PDF::Reader::ObjectHash, "each method" do
it "should iterate 57 times when using cairo-unicode PDF" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
count = 0
h.each do
count += 1
end
count.should eql(57)
end
it "should provide a PDF::Reader::Reference to each iteration" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.each do |id, obj|
id.should be_a_kind_of(PDF::Reader::Reference)
obj.should_not be_nil
end
end
end
describe PDF::Reader::ObjectHash, "each_key method" do
it "should iterate 57 times when using cairo-unicode PDF" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
count = 0
h.each_key do
count += 1
end
count.should eql(57)
end
it "should provide a PDF::Reader::Reference to each iteration" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.each_key do |ref|
ref.should be_a_kind_of(PDF::Reader::Reference)
end
end
end
describe PDF::Reader::ObjectHash, "each_value method" do
it "should iterate 57 times when using cairo-unicode PDF" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
count = 0
h.each_value do
count += 1
end
count.should eql(57)
end
end
describe PDF::Reader::ObjectHash, "size method" do
it "should return 57 when using cairo-unicode PDF" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.size.should eql(57)
end
end
describe PDF::Reader::ObjectHash, "empty? method" do
it "should return false when using cairo-unicode PDF" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.empty?.should be_false
end
end
describe PDF::Reader::ObjectHash, "has_key? method" do
it "should return true when called with a valid ID" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.has_key?(1).should be_true
h.has_key?(PDF::Reader::Reference.new(1,0)).should be_true
end
it "should return false when called with an invalid ID" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.has_key?(-1).should be_false
h.has_key?(nil).should be_false
h.has_key?("James").should be_false
h.has_key?(PDF::Reader::Reference.new(10000,0)).should be_false
end
end
describe PDF::Reader::ObjectHash, "has_value? method" do
it "should return true when called with a valid object" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.has_value?(3649).should be_true
end
it "should return false when called with an invalid object" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.has_value?(-1).should be_false
h.has_value?(nil).should be_false
h.has_value?("James").should be_false
end
end
describe PDF::Reader::ObjectHash, "keys method" do
it "should return an array of keys" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
keys = h.keys
keys.size.should eql(57)
keys.each { |k| k.should be_a_kind_of(PDF::Reader::Reference) }
end
end
describe PDF::Reader::ObjectHash, "values method" do
it "should return an array of object" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
values = h.values
values.size.should eql(57)
values.each { |v| v.should_not be_nil }
end
end
describe PDF::Reader::ObjectHash, "values_at method" do
it "should return an array of object" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
ref3 = PDF::Reader::Reference.new(3,0)
ref6 = PDF::Reader::Reference.new(6,0)
h.values_at(3,6).should eql([3649,3287])
h.values_at(ref3,ref6).should eql([3649,3287])
end
end
describe PDF::Reader::ObjectHash, "to_a method" do
it "should return an array of 57 arrays" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
arr = h.to_a
arr.size.should eql(57)
arr.each { |a| a.should be_a_kind_of(Array) }
end
end
describe PDF::Reader::ObjectHash, "trailer method" do
it "should return the document trailer dictionary" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
expected = {:Size => 58,
:Root => PDF::Reader::Reference.new(57,0),
:Info => PDF::Reader::Reference.new(56,0)}
h.trailer[:Size].should eql(58)
h.trailer[:Root].should eql(PDF::Reader::Reference.new(57,0))
h.trailer[:Info].should eql(PDF::Reader::Reference.new(56,0))
end
end
describe PDF::Reader::ObjectHash, "pdf_version method" do
it "should return the document PDF version dictionary" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
h.pdf_version.should eql(1.4)
end
end
describe PDF::Reader::ObjectHash, "page_references method" do
context "with cairo-unicode.pdf" do
it "should return an ordered array of references to page objects" do
filename = pdf_spec_file("cairo-unicode")
h = PDF::Reader::ObjectHash.new(filename)
arr = h.page_references
arr.size.should eql(4)
arr.map { |ref| ref.id }.should eql([4, 7, 10, 13])
end
end
context "with indirect_kids_array.pdf" do
it "should return an ordered array of references to page objects" do
filename = pdf_spec_file("indirect_kids_array")
h = PDF::Reader::ObjectHash.new(filename)
arr = h.page_references
arr.size.should eql(1)
arr.map { |ref| ref.id }.should eql([6])
end
end
end
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