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-rw-r--r--test/ruby/test_rubyoptions.rb4
1 files changed, 4 insertions, 0 deletions
diff --git a/test/ruby/test_rubyoptions.rb b/test/ruby/test_rubyoptions.rb
index 7510505062..3d98cd6f4e 100644
--- a/test/ruby/test_rubyoptions.rb
+++ b/test/ruby/test_rubyoptions.rb
@@ -89,6 +89,10 @@ class TestRubyOptions < Test::Unit::TestCase
assert_in_out_err([env], "p Thread::Backtrace.limit", ['5'], [])
assert_in_out_err([env, "--backtrace-limit=1"], "p Thread::Backtrace.limit", ['1'], [])
assert_in_out_err([env, "--backtrace-limit=-1"], "p Thread::Backtrace.limit", ['-1'], [])
+ assert_in_out_err([env, "--backtrace-limit=3", "--backtrace-limit=1"],
+ "p Thread::Backtrace.limit", ['1'], [])
+ assert_in_out_err([{"RUBYOPT" => "--backtrace-limit=5 --backtrace-limit=3"}],
+ "p Thread::Backtrace.limit", ['3'], [])
long_max = RbConfig::LIMITS["LONG_MAX"]
assert_in_out_err(%W(--backtrace-limit=#{long_max}), "p Thread::Backtrace.limit",
["#{long_max}"], [])