1 files changed, 18 insertions, 0 deletions
diff --git a/test/optparse/test_cclass.rb b/test/optparse/test_cclass.rb
new file mode 100644
index 0000000000..ac46f46bb2
--- /dev/null
+++ b/test/optparse/test_cclass.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: false
+require_relative 'test_optparse'
+
+class TestOptionParser::CClass < TestOptionParser
+  def test_no_argument
+    flags = []
+    @opt.def_option("-[a-z]") {|x| flags << x}
+    no_error {@opt.parse!(%w"-a")}
+    assert_equal(%w"a", flags)
+  end
+
+  def test_required_argument
+    flags = []
+    @opt.def_option("-[a-z]X") {|x| flags << x}
+    no_error {@opt.parse!(%w"-a")}
+    assert_equal(%w"a", flags)
+  end
+end