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# typed: false
# coding: utf-8
describe PDF::Reader::Page do
describe "#initialize" do
it "raises InvalidPageError when an invalid page number is provided" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
expect {
PDF::Reader::Page.new(@browser.objects, 10)
}.to raise_error(PDF::Reader::InvalidPageError)
end
end
describe "#raw_content" do
it "returns a string from raw_content() from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.raw_content).to be_a_kind_of(String)
end
end
describe "#text" do
# only do a very basic test here. Detailed testing of text extraction is
# done by testing the PageTextReceiver class
it "returns the text content from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.text).to eql("Hello James")
end
end
describe "#boxes" do
let!(:page) { browser.page(1) }
let!(:browser) { PDF::Reader.new(pdf_spec_file("all_page_boxes_exist")) }
it "returns a hash of all the different boxes" do
expect(page.attributes[:ArtBox]).to_not be_empty
expect(page.attributes[:BleedBox]).to_not be_empty
expect(page.attributes[:CropBox]).to_not be_empty
expect(page.attributes[:MediaBox]).to_not be_empty
expect(page.attributes[:TrimBox]).to_not be_empty
expect(page.boxes).to eq(
{
ArtBox: [0, 0, 612, 792],
BleedBox: [0, 0, 612, 792],
CropBox: [0, 0, 612, 792],
MediaBox: [0, 0, 612, 792],
TrimBox: [0, 0, 612, 792],
}
)
end
context "mediabox and cropbox are references" do
let!(:browser) { PDF::Reader.new(pdf_spec_file("mediabox_and_cropbox_are_references")) }
it "returns a non-reference for the dimensions of the boxes" do
expect(page.boxes).to eq(
{
ArtBox: [0, 0, 612, 792],
BleedBox: [0, 0, 612, 792],
CropBox: [0, 0, 612, 792],
MediaBox: [0, 0, 612, 792],
TrimBox: [0, 0, 612, 792],
}
)
end
end
end
describe "#rectangles" do
let!(:page) { browser.page(1) }
let!(:browser) { PDF::Reader.new(pdf_spec_file("all_page_boxes_exist")) }
it "returns a hash of all the different boxes" do
expect(page.attributes[:ArtBox]).to_not be_empty
expect(page.attributes[:BleedBox]).to_not be_empty
expect(page.attributes[:CropBox]).to_not be_empty
expect(page.attributes[:MediaBox]).to_not be_empty
expect(page.attributes[:TrimBox]).to_not be_empty
expect(page.rectangles).to eq(
{
ArtBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
BleedBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
CropBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
MediaBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
TrimBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
}
)
end
context "mediabox and cropbox are references" do
let!(:browser) { PDF::Reader.new(pdf_spec_file("mediabox_and_cropbox_are_references")) }
it "returns a non-reference for the dimensions of the boxes" do
expect(page.rectangles).to eq(
{
ArtBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
BleedBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
CropBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
MediaBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
TrimBox: PDF::Reader::Rectangle.new(0, 0, 612, 792),
}
)
end
end
end
describe "#walk" do
context "with page 1 of cairo-basic.pdf" do
let!(:browser) { PDF::Reader.new(pdf_spec_file("cairo-basic")) }
let!(:page) { browser.page(1) }
it "calls the special page= callback while walking content stream" do
receiver = PDF::Reader::RegisterReceiver.new
page.walk(receiver)
callbacks = receiver.callbacks.map { |cb| cb[:name] }
expect(callbacks.first).to eql(:page=)
end
it "runs callbacks while walking content stream" do
receiver = PDF::Reader::RegisterReceiver.new
page.walk(receiver)
callbacks = receiver.callbacks.map { |cb| cb[:name] }
expect(callbacks.size).to eql(16)
expect(callbacks[0]).to eql(:page=)
expect(callbacks[1]).to eql(:save_graphics_state)
end
it "runs callbacks on multiple receivers while walking content stream" do
receiver_one = PDF::Reader::RegisterReceiver.new
receiver_two = PDF::Reader::RegisterReceiver.new
page.walk(receiver_one, receiver_two)
callbacks = receiver_one.callbacks.map { |cb| cb[:name] }
expect(callbacks.size).to eql(16)
expect(callbacks.first).to eql(:page=)
callbacks = receiver_two.callbacks.map { |cb| cb[:name] }
expect(callbacks.size).to eql(16)
expect(callbacks.first).to eql(:page=)
end
context "with a receiver that implements a method not type checked by ValidatingReceiver" do
before do
# This test is speecifically for confirming a receiver method is called, even if that
# method isn't one that ValidatingReceiver is type checking. If the following assertion
# ever fails, then we should update this spec to a different method not mentioned in
# ValidatingReceiver
expect(PDF::Reader::ValidatingReceiver.methods).to_not include(
:set_rgb_color_for_nonstroking
)
end
it "calls the receiver method as expected" do
receiver = double(set_rgb_color_for_nonstroking: true)
page.walk(receiver)
expect(receiver).to have_received(:set_rgb_color_for_nonstroking).twice
end
end
end
end
describe "#number" do
it "returns the correct number for the current page" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.number).to eql(1)
end
end
describe "#attributes" do
it "contains attributes from the Page object" do
@browser = PDF::Reader.new(pdf_spec_file("inherited_page_attributes"))
@page = @browser.page(1)
attribs = @page.attributes
expect(attribs[:Resources]).to be_a_kind_of(Hash)
expect(attribs[:Resources].size).to eql(2)
end
it "contains inherited attributes" do
@browser = PDF::Reader.new(pdf_spec_file("inherited_page_attributes"))
@page = @browser.page(1)
attribs = @page.attributes
expect(attribs[:MediaBox]).to eql([0.0, 0.0, 595.276, 841.89])
end
it "allows Page to override inherited attributes" do
@browser = PDF::Reader.new(pdf_spec_file("override_inherited_attributes"))
@page = @browser.page(1)
attribs = @page.attributes
expect(attribs[:MediaBox]).to eql([0, 0, 200, 200])
end
it "does not include attributes from the Pages object that don't belong on a Page" do
@browser = PDF::Reader.new(pdf_spec_file("inherited_page_attributes"))
@page = @browser.page(1)
attribs = @page.attributes
expect(attribs[:Kids]).to be_nil
end
it "does not include attributes from the Pages object that don't belong on a Page" do
@browser = PDF::Reader.new(pdf_spec_file("inherited_trimbox"))
@page = @browser.page(1)
attribs = @page.attributes
expect(attribs[:TrimBox]).to be_nil
end
it "always includes Type => Page" do
@browser = PDF::Reader.new(pdf_spec_file("inherited_page_attributes"))
@page = @browser.page(1)
attribs = @page.attributes
expect(attribs[:Type]).to eql(:Page)
end
it 'assumes 8.5" x 11" if MediaBox is missing (matches Acrobat behaviour)' do
@browser = PDF::Reader.new(pdf_spec_file("mediabox_missing"))
@page = @browser.page(1)
attribs = @page.attributes
expect(attribs[:MediaBox]).to eql([0,0,612,792])
end
end
describe "#fonts" do
it "returns a hash with the correct size from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.fonts).to be_a_kind_of(Hash)
expect(@page.fonts.size).to eql(1)
expect(@page.fonts.keys).to eql([:"CairoFont-0-0"])
end
it "contains inherited resources" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.fonts).to be_a_kind_of(Hash)
expect(@page.fonts.size).to eql(1)
expect(@page.fonts.keys).to eql([:"CairoFont-0-0"])
end
end
describe "#color_spaces" do
it "returns an empty hash from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.color_spaces).to be_a_kind_of(Hash)
expect(@page.color_spaces.size).to eql(0)
end
end
describe "#graphic_states" do
it "returns an hash with 1 entry from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.graphic_states).to be_a_kind_of(Hash)
expect(@page.graphic_states.size).to eql(1)
end
end
describe "#orientation" do
# this just checks that Page calls the PageOrientation class correctly. Extended specs
# to check the different orientations are correctly detected are over in the
# PageOrientation unit specs
it "returns the orientation of portrait.pdf page 1 as 'portrait'" do
@browser = PDF::Reader.new(pdf_spec_file("portrait"))
@page = @browser.page(1)
expect(@page.orientation).to eql("portrait")
end
end
describe "#patterns" do
it "returns an empty hash from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.patterns).to be_a_kind_of(Hash)
expect(@page.patterns.size).to eql(0)
end
end
describe "#procedure_sets" do
it "returns an empty array from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.procedure_sets).to be_a_kind_of(Array)
expect(@page.procedure_sets.size).to eql(0)
end
end
describe "#properties" do
it "returns an empty hash from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.properties).to be_a_kind_of(Hash)
expect(@page.properties.size).to eql(0)
end
end
describe "#shadings" do
it "returns an empty hash from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.shadings).to be_a_kind_of(Hash)
expect(@page.shadings.size).to eql(0)
end
end
describe "#xobjects" do
it "returns an empty hash from cairo-basic.pdf page 1" do
@browser = PDF::Reader.new(pdf_spec_file("cairo-basic"))
@page = @browser.page(1)
expect(@page.xobjects).to be_a_kind_of(Hash)
expect(@page.xobjects.size).to eql(0)
end
end
end
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