Enable coverage report generation for Jenkins

This change fixes the regression introduced by
I814667283ccfc6ebd7c16d961270f688e9fb9c4c in which the rspec coverage
information was no longer being written out. Additionally this change
enables coverage report information to be generaged by the Jenkins jobs
as part of the default run via fuel_noop_tests.sh. This change will
allow us to update the jobs to capture the information with Jenkins and
report on trends.

Change-Id: I6cc729d7ff2928bdf78ee17487f2158b4ef12490
Closes-Bug: #1524967
Related-Bug: #1506557

tests/noop/spec/lib/coverage.rb

@@ -20,11 +20,31 @@ class Noop
       end
 
       SimpleCov.at_exit do
+        puts "-"*80
+        puts "SimpleCov Coverage Report"
         SimpleCov.result.format!
         puts "Total coverage percent: #{SimpleCov.result.covered_percent.round 2}"
+        puts "-"*80
       end
     end
 
+    def coverage_rspec(file_name)
+      coverage_prepare
+      # capture the rspec coverage report
+      puppet_coverage_report = capture_stdout do
+        RSpec::Puppet::Coverage.report!
+      end
+      # write the rspec coverage report out to a file
+      File.open("#{coverage_base_dir}/#{file_name}", "w") { |file|
+        file.write(puppet_coverage_report.string)
+      }
+      # also print it out to the console
+      puts "-"*80
+      puts "RSpec Coverage Report for #{file_name}"
+      puts puppet_coverage_report.string
+      puts "-"*80
+    end
+
   end
   extend Coverage
 end

tests/noop/spec/lib/helpers.rb

@@ -56,6 +56,15 @@ class Noop
       lambda { ral_catalog }
     end
 
+    def capture_stdout
+      output = StringIO.new
+      $stdout = output
+      yield
+      return output
+    ensure
+      $stdout = STDOUT
+    end
+
   end
   extend Helpers
 end

tests/noop/spec/spec_helper.rb

@@ -46,3 +46,7 @@ RSpec.configure do |c|
 end
 
 Noop.coverage_simplecov if ENV['SPEC_COVERAGE']
+
+at_exit {
+  Noop.coverage_rspec ENV['SPEC_ASTUTE_FILE_NAME'] if ENV['SPEC_COVERAGE']
+}

utils/jenkins/fuel_noop_tests.sh

@@ -5,5 +5,5 @@ DIR=`dirname $0`
 echo 'Ruby version:'
 ruby --version
 
-"${DIR}/fuel_noop_tests.rb" -b -d -u -m ${@}
+"${DIR}/fuel_noop_tests.rb" -b -d -u -O -m ${@}