Fixed duplicate test name

test/ruby/test_integer.rb

@@ -192,7 +192,7 @@ def to_int; raise "conversion failed"; end
     end;
   end
 
-  def test_Integer_with_exception_keyword
+  def test_Integer_with_invalid_exception
     assert_raise(ArgumentError) {
       Integer("0", exception: 1)
     }