Merge pull request #185 from dry-rb/keep-original-error-in-failure

Keep original error in failure object

Author: flash-gordon

lib/dry/struct/class_interface.rb

@@ -306,7 +306,7 @@ def constructor(constructor = nil, **, &block)
       def try(input)
         success(self[input])
       rescue Error => e
-        failure_result = failure(input, e.message)
+        failure_result = failure(input, e)
         block_given? ? yield(failure_result) : failure_result
       end
 

spec/shared/struct.rb

@@ -310,6 +310,10 @@ def self.new(attributes)
         expect(struct.try(name: "John")).to be_a(Dry::Types::Result::Success)
         expect(struct.try(name: 42)).to be_a(Dry::Types::Result::Failure)
       end
+
+      it "keeps an error instance" do
+        expect(struct.try(name: 42).error).to be_a(Dry::Struct::Error)
+      end
     end
   end
 end