integration_helper.rb in pdf_ravager-0.2.0

- old
+ new

@@ -1,14 +1,15 @@
 require File.dirname(__FILE__) + '/../spec_helper'
-require 'rspec'
-require 'pdf_ravager'
 require 'securerandom'
 require 'chunky_png'
 require 'tempfile'
 
 def mktemp(ext)
-  Tempfile.new(['', ext]).path
+  f = Tempfile.new(['', ext])
+  (@@prevent_gc ||= []) << f # prevents file from getting deleted until all tests are done
+  f.close
+  f.path
 end
 
 def pdf_to_ps(pdf_file, out_file=nil)
   out_file ||= mktemp('.ps')
   system("acroread -toPostScript -markupsOn -pairs #{pdf_file} #{out_file} >/dev/null 2>&1")
@@ -21,9 +22,19 @@
   out_file
 end
 
 def pdf_to_png(pdf_file)
   ps_to_png(pdf_to_ps(pdf_file))
+end
+
+def ravage_to_temp_file(template, input_pdf)
+  file = mktemp('.pdf')
+  template.ravage input_pdf, :out_file => file
+  file
+end
+
+def compare_pdf_to_png(input_pdf, png)
+  png_diff(pdf_to_png(input_pdf), png)
 end
 
 # code taken from http://jeffkreeftmeijer.com/2011/comparing-images-and-creating-image-diffs/
 def png_diff(img1, img2)
   images = [