fix_gemspec.rb in docraptor-2.0.0

- old
+ new

@@ -1,10 +1,12 @@
 # coding: utf-8
-bad_files       = %q{s.files         = `find *`.split("\n").uniq.sort.select { |f| !f.empty? }}
-bad_test_files  = %q{s.test_files    = `find spec/*`.split("\n")}
-good_files      = %q{s.files         = `git ls-files`.split("\n").uniq.sort.select { |f| !f.empty? }}
-good_test_files = %q{s.test_files    = `git ls-files spec test`.split("\n")}
+bad_files         = %q{s.files         = `find *`.split("\n").uniq.sort.select { |f| !f.empty? }}
+good_files        = %q{s.files         = `git ls-files`.split("\n").uniq.sort.select { |f| !f.empty? }}
+bad_test_files    = %q{s.test_files    = `find spec/*`.split("\n")}
+good_test_files   = %q{s.test_files    = `git ls-files spec test`.split("\n")}
+bad_ruby_version  = %q{s.required_ruby_version = ">= 1.9"}
+good_ruby_version = %q{s.required_ruby_version = ">= 2.3"}
 
 development_dependency_marker = %q{  s.add_development_dependency 'autotest-fsevent', '~> 0.2', '>= 0.2.12'}
 development_dependency_marker_plus_injection =
 "  s.add_development_dependency 'autotest-fsevent', '~> 0.2', '>= 0.2.12'
 
@@ -14,17 +16,23 @@
   # </added> : if the above lines are missing in the gemspec, then
   # the matcher for autotest is probably broken"
 
 filename = "docraptor.gemspec"
 content = File.read(filename)
-[bad_files, bad_test_files, development_dependency_marker].each do |bad_content_to_check|
+[
+  bad_files,
+  bad_test_files,
+  bad_ruby_version,
+  development_dependency_marker
+].each do |bad_content_to_check|
   unless content.include?(bad_content_to_check)
     raise "Couldn't find content in docraptor.gemspec. Check matchers in there for: “#{bad_content_to_check}”"
   end
 end
 updated_content = content.dup
 updated_content.sub!(bad_files, good_files)
 updated_content.sub!(bad_test_files, good_test_files)
+updated_content.sub!(bad_ruby_version, good_ruby_version)
 updated_content.sub!(development_dependency_marker,
                      development_dependency_marker_plus_injection)
 
 File.open(filename, "w") do |file|
   file.write(updated_content)