event name can not be nil string

event name can not be nil string

Change-Id: I99d9a2bb5a39e33182e7623bac60fb052ef7741d
Signed-off-by: xiejunan <[email protected]>
Signed-off-by: jiangyaoguo <[email protected]>

Author: xiejunan

core/chaincode/shim/chaincode.go

@@ -904,6 +904,9 @@ func insertRowInternal(stub ChaincodeStubInterface, tableName string, row Row, u
 
 // SetEvent saves the event to be sent when a transaction is made part of a block
 func (stub *ChaincodeStub) SetEvent(name string, payload []byte) error {
+	if name == "" {
+		return errors.New("Event name can not be nil string.")
+	}
 	stub.chaincodeEvent = &pb.ChaincodeEvent{EventName: name, Payload: payload}
 	return nil
 }

core/chaincode/shim/shim_test.go

@@ -134,3 +134,11 @@ func TestChaincodeLogging(t *testing.T) {
 		t.Errorf("'bar' should be enabled for LogCritical")
 	}
 }
+
+func TestNilEventName(t *testing.T) {
+	stub := ChaincodeStub{}
+	if err := stub.SetEvent("", []byte("event payload")); err == nil {
+		t.Error("Event name can not be nil string.")
+	}
+
+}