Generate knapsack report for review-qa-all

Add knapsack qa report and use it to run tests in parallel

Use the RSpec runner with knapsack

The way the Knapsack runner uses exec to start rspec seems
incompatible with the way we expect it to work. Plus, it requires
specifying KNAPSACK_TEST_DIR.

Instead, we use knapsacks AllocatorBuilder to select the spec
files to run, and then start rspec as normal, via
RSpec::Core::Runner.run

This also means we can incorporate tags.

Let the job run automatically

Include KNAPSACK_TEST_FILE_PATTERN in vars

Check all defined knapsack env vars before requiring knapsack

1 files changed, 18 insertions, 1 deletions

diff --git a/qa/qa/specs/runner.rb b/qa/qa/specs/runner.rb
index 306913dafa6..f1cb9378de8 100644
--- a/qa/qa/specs/runner.rb
+++ b/qa/qa/specs/runner.rb
@@ -1,6 +1,8 @@
 # frozen_string_literal: true
 
 require 'rspec/core'
+require 'rspec/expectations'
+require 'knapsack'
 
 module QA
   module Specs
@@ -32,10 +34,25 @@ module QA
         end
 
         args.push(options)
-        args.push(DEFAULT_TEST_PATH_ARGS) unless options.any? { |opt| opt =~ %r{/features/} }
 
         Runtime::Browser.configure!
 
+        if Runtime::Env.knapsack?
+          allocator = Knapsack::AllocatorBuilder.new(Knapsack::Adapters::RSpecAdapter).allocator
+
+          QA::Runtime::Logger.info ''
+          QA::Runtime::Logger.info 'Report specs:'
+          QA::Runtime::Logger.info allocator.report_node_tests.join(', ')
+          QA::Runtime::Logger.info ''
+          QA::Runtime::Logger.info 'Leftover specs:'
+          QA::Runtime::Logger.info allocator.leftover_node_tests.join(', ')
+          QA::Runtime::Logger.info ''
+
+          args.push(['--', allocator.node_tests])
+        else
+          args.push(DEFAULT_TEST_PATH_ARGS) unless options.any? { |opt| opt =~ %r{/features/} }
+        end
+
         RSpec::Core::Runner.run(args.flatten, $stderr, $stdout).tap do |status|
           abort if status.nonzero?
         end