1 files changed, 6 insertions, 1 deletions
diff --git a/test/optparse/test_acceptable.rb b/test/optparse/test_acceptable.rb
index 12f7886538..c7ea2152fc 100644
--- a/test/optparse/test_acceptable.rb
+++ b/test/optparse/test_acceptable.rb
@@ -1,13 +1,14 @@
 # frozen_string_literal: false
 require_relative 'test_optparse'
 
-class TestOptionParser::Acceptable < TestOptionParser
+class TestOptionParserAcceptable < TestOptionParser
 
   def setup
     super
     @opt.def_option("--integer VAL", Integer) { |v| @integer = v }
     @opt.def_option("--float VAL",   Float)   { |v| @float   = v }
     @opt.def_option("--numeric VAL", Numeric) { |v| @numeric = v }
+    @opt.def_option("--array VAL", Array) { |v| @array = v }
 
     @opt.def_option("--decimal-integer VAL",
                     OptionParser::DecimalInteger) { |i| @decimal_integer = i }
@@ -195,4 +196,8 @@ class TestOptionParser::Acceptable < TestOptionParser
     end
   end
 
+  def test_array
+    assert_equal(%w"", no_error {@opt.parse!(%w"--array a,b,c")})
+    assert_equal(%w"a b c", @array)
+  end
 end