[GR-17457] Fix MRI test depending on ja_JP.UTF-8 locale

PullRequest: truffleruby/3664

Author: eregon

ci.jsonnet

@@ -59,6 +59,7 @@ local part_definitions = {
         ["set", "-o", "pipefail"],
         ["ruby", "--version"],
         ["openssl", "version"],
+        ["locale"],
       ],
 
       logs+: [

test/mri/tests/irb/test_raise_no_backtrace_exception.rb

@@ -1,10 +1,11 @@
 # frozen_string_literal: false
 require 'test/unit'
+# TruffleRuby: with changes from https://github.com/ruby/irb/pull/423
+require 'tmpdir' # TruffleRuby: added missing require
 
 module TestIRB
   class TestRaiseNoBacktraceException < Test::Unit::TestCase
     def test_raise_exception
-      # pend if RUBY_ENGINE == 'truffleruby' # https://github.com/ruby/irb/pull/423
       bundle_exec = ENV.key?('BUNDLE_GEMFILE') ? ['-rbundler/setup'] : []
       assert_in_out_err(bundle_exec + %w[-rirb -W0 -e IRB.start(__FILE__) -- -f --], <<-IRB, /Exception: foo/, [])
       e = Exception.new("foo")
@@ -23,7 +24,6 @@ def test_raise_exception_with_invalid_byte_sequence
     end
 
     def test_raise_exception_with_different_encoding_containing_invalid_byte_sequence
-      # pend if RUBY_ENGINE == 'truffleruby' # https://github.com/ruby/irb/pull/423
       backup_home = ENV["HOME"]
       Dir.mktmpdir("test_irb_raise_no_backtrace_exception_#{$$}") do |tmpdir|
         ENV["HOME"] = tmpdir
@@ -40,6 +40,8 @@ def raise_euc_with_invalid_byte_sequence
         end
         env = {}
         %w(LC_MESSAGES LC_ALL LC_CTYPE LANG).each {|n| env[n] = "ja_JP.UTF-8" }
+        # TruffleRuby warns when the locale does not exist
+        env['TRUFFLERUBYOPT'] = "#{ENV['TRUFFLERUBYOPT']} --log.level=SEVERE" if RUBY_ENGINE == 'truffleruby'
         args = [env] + bundle_exec + %W[-rirb -C #{tmpdir} -W0 -e IRB.start(__FILE__) -- -f --]
         error = /`raise_euc_with_invalid_byte_sequence': あ\\xFF \(RuntimeError\)/
         assert_in_out_err(args, <<~IRB, error, [], encoding: "UTF-8")