Fixed build tests for JRuby.

Author: jdantonio

build-tests/atomic_reference_builds_spec.rb

@@ -40,7 +40,7 @@ def atomic_reference_test(clazz, opts = {})
     end
   end
 
-  if jruby?
+  if jruby? && 'JRUBY' == ENV['TEST_PLATFORM']
 
     describe Concurrent::JavaAtomic do
 

build-tests/runner.rb

@@ -38,7 +38,8 @@
 gem uninstall -q -a -I ref
 CMD
 
-SUITE_BREAK = "######################################################################\n"
+PLATFORM_BREAK = "######################################################################\n"
+SUITE_BREAK    = "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n"
 
 def platform_specific_extensions?(platform = RUBY_PLATFORM)
   EXT_PLATFORMS.keys.include?(platform) &&
@@ -95,7 +96,10 @@ def run_test_suite(files, ext, platform = '')
 ok = system(INSTALL_RSPEC_COMMAND)
 ok = system(UNINSTALL_GEMS_COMMAND)
 
+puts PLATFORM_BREAK
+puts RUBY_PLATFORM
 puts SUITE_BREAK
+
 run_test_suite(TEST_FILES, false)
 if jruby?
   puts SUITE_BREAK