ensure any new options replace old ones so no duplicates exist

closes #100

1 files changed, 9 insertions, 0 deletions

diff --git a/test/slop_test.rb b/test/slop_test.rb
index 806f5ea..81d9a2a 100644
--- a/test/slop_test.rb
+++ b/test/slop_test.rb
@@ -448,4 +448,13 @@ class SlopTest < TestCase
     end
   end
 
+  test "duplicate options should not exist, new options should replace old ones" do
+    i = nil
+    Slop.parse(%w'-v') do
+      on(:v) { i = 'first' }
+      on(:v) { i = 'second' }
+    end
+    assert_equal 'second', i
+  end
+
 end