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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe PDF::Core::Renderer do
subject(:renderer) { described_class.new(PDF::Core::DocumentState.new({})) }
it 'renders document' do
doc = renderer.render
expect(doc).to be_a(String)
expect(doc).to_not be_empty
end
it 'renders document header' do
expect(renderer.render).to start_with('%PDF-')
end
it 'renders EOF' do
expect(renderer.render).to end_with("\n%%EOF\n")
end
it 'renders xref marker' do
expect(renderer.render).to include("\nxref\n")
end
it 'renders trailer marker' do
expect(renderer.render).to include("\ntrailer\n")
end
it 'renders startxref marker' do
expect(renderer.render).to include("\nstartxref\n")
end
it 'renders to a file' do
require 'tempfile'
Tempfile.open('doc') do |f|
expect { renderer.render(f) }.to_not raise_error
expect(f.size).to_not eq(0)
end
end
it 'renders to a StringIO' do
sio = StringIO.new.binmode
expect { renderer.render(sio) }.to_not raise_error
expect(sio.size).to_not eq(0)
end
it 'renders to an object that implements #<<' do
out = double
allow(out).to receive(:<<)
expect { renderer.render(out) }.to_not raise_error
expect(out).to have_received(:<<).with(an_instance_of(String))
end
end
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