Allow mri to run tests even if JRUBY_OPTS is unset

jruby · Apr 1, 2016 · 88ce89a · 88ce89a
1 parent c483e89
commit 88ce89a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/test/mri/runner.rb b/test/mri/runner.rb
@@ -21,7 +21,7 @@ class Gem::TestCase < MiniTest::Unit::TestCase
 ENV["GEM_SKIP"] = ENV["GEM_HOME"] = ENV["GEM_PATH"] = "".freeze
 
 # Use MRI backtraces for tests that verify error output
-ENV["JRUBY_OPTS"] += ENV["JRUBY_OPTS"].to_s + " -Xbacktrace.style=mri"
+ENV["JRUBY_OPTS"] = ENV["JRUBY_OPTS"].to_s + " -Xbacktrace.style=mri"
 
 require_relative 'lib/profile_test_all' if ENV.has_key?('RUBY_TEST_ALL_PROFILE')
 #require_relative 'lib/tracepointchecker'