Unit tests fixes after go-ethereum v1.10.1 update

Const in abi.Method has been removed to Constant.
Error ABI need to declare a type of Error function.

Author: pdyraga

pkg/chain/ethereum/ethutil/error_resolver.go

@@ -15,7 +15,7 @@ import (
 // neither encoded strictly as method calls nor strictly as return values, nor
 // strictly as events, but some various bits of it are used for unpacking the
 // errors. See ResolveError below.
-const errorABIString = "[{\"constant\":true,\"outputs\":[{\"type\":\"string\"}],\"inputs\":[{\"name\":\"message\", \"type\":\"string\"}],\"name\":\"Error\"}]"
+const errorABIString = "[{\"constant\":true,\"outputs\":[{\"type\":\"string\"}],\"inputs\":[{\"name\":\"message\", \"type\":\"string\"}],\"name\":\"Error\", \"type\": \"function\"}]"
 
 var errorABI abi.ABI
 

pkg/chain/ethereum/ethutil/error_resolver_test.go

@@ -17,10 +17,10 @@ import (
 
 var testABIMethods = map[string]abi.Method{
 	"Test": abi.Method{
-		Const:   false,
-		Name:    "Test",
-		Inputs:  []abi.Argument{},
-		Outputs: []abi.Argument{},
+		Constant: false,
+		Name:     "Test",
+		Inputs:   []abi.Argument{},
+		Outputs:  []abi.Argument{},
 	},
 }
 var testABI = abi.ABI{

tools/generators/ethlike/contract_parsing_test.go

@@ -118,9 +118,9 @@ func TestMethodStability(t *testing.T) {
 	allMethods := make(map[string]abi.Method)
 	allMethods["boop"] = abi.Method{Name: "boop", RawName: "boop"}
 	allMethods["boop0"] = abi.Method{Name: "boop0", RawName: "boop"}
-	allMethods["bap"] = abi.Method{Name: "bap", RawName: "bap", Const: true}
+	allMethods["bap"] = abi.Method{Name: "bap", RawName: "bap", Constant: true}
 	allMethods["sap"] = abi.Method{Name: "sap", RawName: "sap"}
-	allMethods["map"] = abi.Method{Name: "map", RawName: "map", Const: true}
+	allMethods["map"] = abi.Method{Name: "map", RawName: "map", Constant: true}
 	allMethods["map0"] = abi.Method{Name: "map0", RawName: "map"}
 
 	payableMethods := make(map[string]struct{})