Expose raw_output in TestRun::TestResult

This allows you to print out all the qunit output, not just the summary. See rails/rails#42513 for an example of why.

lib/qunit/selenium/test_run.rb

@@ -1,7 +1,7 @@
 module QUnit
   module Selenium
     class TestRun
-      TestResult = Struct.new(:tests, :assertions, :duration)
+      TestResult = Struct.new(:tests, :assertions, :duration, :raw_output)
       ID_TESTRESULT = 'qunit-testresult'
       ID_TESTS = 'qunit-tests'
 
@@ -17,11 +17,15 @@ def completed?
       def result
         assertions = {total: total_assertions, passed: passed_assertions, failed: failed_assertions}
         tests = {total: total_tests, passed: pass_tests, failed: fail_tests}
-        TestResult.new(tests, assertions, duration)
+        TestResult.new(tests, assertions, duration, raw_output)
       end
 
       private
 
+      def raw_output
+        @qunit_tests.text
+      end
+
       def duration
         match = /Tests completed in (?<milliseconds>\d+) milliseconds/.match @qunit_testresult.text
         match[:milliseconds].to_i / 1000
@@ -44,4 +48,4 @@ def total_tests
       end
     end
   end
-end
+end