Added sort method to ContractAttributes array

pkg/watched_contracts/summary.go

@@ -13,7 +13,7 @@ type ContractSummary struct {
 	NumberOfTransactions int
 	LastTransaction      *core.Transaction
 	blockChain           core.Blockchain
-	Attributes           []core.ContractAttribute
+	Attributes           core.ContractAttributes
 }
 
 var NewContractNotWatchedErr = func(contractHash string) error {

pkg/watched_contracts/summary_test.go

@@ -106,9 +106,9 @@ var _ bool = Describe("The watched contract summary", func() {
 			contractSummary, _ := watched_contracts.NewSummary(blockchain, repository, "0x123")
 
 			Expect(contractSummary.Attributes).To(Equal(
-				[]core.ContractAttribute{
-					{Name: "foo", Type: "string"},
+				core.ContractAttributes{
 					{Name: "baz", Type: "string"},
+					{Name: "foo", Type: "string"},
 				},
 			))
 		})