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-rwxr-xr-xspec/functions/swapcase_spec.rb9
1 files changed, 9 insertions, 0 deletions
diff --git a/spec/functions/swapcase_spec.rb b/spec/functions/swapcase_spec.rb
index c6838ab..791d1df 100755
--- a/spec/functions/swapcase_spec.rb
+++ b/spec/functions/swapcase_spec.rb
@@ -16,4 +16,13 @@ describe "the swapcase function" do
result = scope.function_swapcase(["aaBBccDD"])
expect(result).to(eq('AAbbCCdd'))
end
+
+ it "should accept objects which extend String" do
+ class AlsoString < String
+ end
+
+ value = AlsoString.new("aaBBccDD")
+ result = scope.function_swapcase([value])
+ result.should(eq("AAbbCCdd"))
+ end
end