Run tests in parallel via parallel_tests

Uses the parallel_tests gem to execute tests in multiple processes
simultaneously on the same machine.

Adds the `--parallel` CLI option that instructs the QA framework
to use the parallel_tests executable.

Tests need access to global state contained in `Runtime::Scenario`
so when `--parallel` is invoked `Runtime::Scenario` is serialized
to an environment variable, which is passed to parallel_tests,
and then deserialized in `spec_helper`.

1 files changed, 1 insertions, 0 deletions

diff --git a/qa/qa.rb b/qa/qa.rb
index 10d44b6f6d9..be73776425b 100644
--- a/qa/qa.rb
+++ b/qa/qa.rb
@@ -360,6 +360,7 @@ module QA
   module Specs
     autoload :Config, 'qa/specs/config'
     autoload :Runner, 'qa/specs/runner'
+    autoload :ParallelRunner, 'qa/specs/parallel_runner'
 
     module Helpers
       autoload :Quarantine, 'qa/specs/helpers/quarantine'