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require File.expand_path(File.dirname(__FILE__) + '/../../../spec_helper')
describe AttachmentToHTML::Adapters::PDF do
let(:attachment) { FactoryGirl.build(:pdf_attachment) }
let(:adapter) { AttachmentToHTML::Adapters::PDF.new(attachment) }
describe :tmpdir do
it 'defaults to the rails tmp directory' do
adapter.tmpdir.should == Rails.root.join('tmp')
end
it 'allows a tmpdir to be specified to store the converted document' do
adapter = AttachmentToHTML::Adapters::PDF.new(attachment, :tmpdir => '/tmp')
adapter.tmpdir.should == '/tmp'
end
end
describe :title do
it 'uses the attachment filename for the title' do
adapter.title.should == attachment.display_filename
end
it 'returns the title encoded as UTF-8' do
if RUBY_VERSION.to_f >= 1.9
adapter.title.encoding.should == Encoding.find('UTF-8')
end
end
end
describe :body do
it 'extracts the body from the document' do
adapter.body.should include('thisisthebody')
end
it 'operates in the context of the supplied tmpdir' do
adapter = AttachmentToHTML::Adapters::PDF.new(attachment, :tmpdir => '/tmp')
Dir.should_receive(:chdir).with('/tmp').and_call_original
adapter.body
end
it 'returns the body encoded as UTF-8' do
if RUBY_VERSION.to_f >= 1.9
adapter.body.encoding.should == Encoding.find('UTF-8')
end
end
end
describe :success? do
it 'is successful if the body has content excluding the tags' do
adapter.stub(:body).and_return('<p>some content</p>')
adapter.success?.should be_true
end
it 'is successful if the body contains images' do
adapter.stub(:body).and_return(%Q(<img src="logo.png" />))
adapter.success?.should be_true
end
it 'is not successful if the body has no content other than tags' do
adapter.stub(:body).and_return('<p></p>')
adapter.success?.should be_false
end
it 'is not successful if convert returns nil' do
adapter.stub(:convert).and_return(nil)
adapter.success?.should be_false
end
it 'is not successful if the body contains more than 50 images' do
# Sometimes pdftohtml extracts images incorrectly, resulting
# in thousands of PNGs being created for one image. This creates
# a huge request spike when the converted attachment is requested.
#
# See bug report https://bugs.freedesktop.org/show_bug.cgi?id=77932
# Construct mocked HTML output with 51 images
invalid = <<-DOC
<!DOCTYPE html>
<HTML xmlns="http://www.w3.org/1999/xhtml" lang="" xml:lang="">
<HEAD>
<TITLE>Microsoft Word - FOI 12-01605 Resp 1.doc</TITLE>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<META name="generator" content="pdftohtml 0.36"/>
<META name="author" content="8065"/>
<META name="date" content="2012-09-24T15:37:06+00:00"/>
</HEAD>
<BODY bgcolor="#A0A0A0" vlink="blue" link="blue">
<A name=1></a><IMG src="FOI 12 01605 Resp 1 PDF-1_1.png"/><br/>
<IMG src="FOI 12 01605 Resp 1 PDF-1_2.png"/><br/>
DOC
(3..51).each { |i| invalid += %Q(<IMG src="FOI 12 01605 Resp 1 PDF-1_#{i}.png"/><br/>) }
invalid += <<-DOC
 <br/>
Some Content<br/>
<hr>
</BODY>
</HTML>
DOC
AlaveteliExternalCommand.stub(:run).and_return(invalid)
adapter.success?.should be_false
end
end
end
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