Fix up dspec task for parallelization

Rakefile.rb

@@ -29,6 +29,7 @@ task :spec do
 end
 task :spec => :build_tests
 task :spec do
+  unless ENV["rscons_dist_specs"]
     original_stdout = $stdout
     sio = StringIO.new
     $stdout = sio
@@ -38,6 +39,7 @@ task :spec do
       $stdout.write(line) unless line =~ /Coverage report generated for/
     end
   end
+end
 
 task :build_tests do |task, args|
   ENV["specs"] = "1"
@@ -54,6 +56,7 @@ task :dspec, [:example_string] => :build_dist do |task, args|
   FileUtils.cp("dist/rscons", "test_run/rscons.rb")
   ENV["rscons_dist_specs"] = "1"
   Rake::Task["spec"].execute(args)
+  Rake::Task["build_tests"].execute(args)
   ENV.delete("rscons_dist_specs")
   FileUtils.rm_f(Dir.glob(".rscons-*"))
 end

build_tests/build_tests.rb

@@ -86,7 +86,7 @@ class Test
   def run_rscons(options = {})
     args = Array(options[:args]) || []
     if ENV["dist_specs"]
-      exe = "#{OWD}/test/rscons.rb"
+      exe = "#{OWD}/test_run/rscons.rb"
     else
       exe = "#{OWD}/bin/rscons"
     end
@@ -248,7 +248,7 @@ def run_tests
   tests = @focused_tests.size > 0 ? @focused_tests : @tests
   queue = Queue.new
   threads = {}
-  n_procs = `nproc`.to_i
+  n_procs = `nproc`.to_i * 2
   failure = false
   loop do
     break if threads.empty? && tests.empty?

spec/spec_helper.rb

@@ -1,5 +1,5 @@
 if ENV["rscons_dist_specs"]
-  require_relative "../test/rscons"
+  require_relative "../test_run/rscons"
 else
   require "simplecov"
 
@@ -15,7 +15,7 @@ else
     else
       command_name "RSpec"
     end
-    add_filter "test/rscons.rb"
+    add_filter "test_run/rscons.rb"
     project_name "Rscons"
     merge_timeout 3600
     formatter(MyFormatter)