Merge pull request #28 from cuiko/fix/rpc-user-creator-mapping

fix(status): Map USER_CREATOR to a friendly usage error

Author: cuiko tang

internal/program/status/rpc.go

@@ -43,6 +43,7 @@ var rpcErrors = map[string]rpcClass{
 	// "Bad request argument" family -> usage / exit 2.
 	tg.ErrHideRequesterMissing: {CodeUsage, 2, "no pending join request from this user"},
 	tg.ErrParticipantIDInvalid: {CodeUsage, 2, "that user can't be the target of this action (e.g. the group creator)"},
+	tg.ErrUserCreator:          {CodeUsage, 2, "this action isn't allowed on the group/channel creator"},
 	tg.ErrFileReferenceExpired: {CodeUsage, 2, "sticker reference expired; run `tg msg sticker list` again for a fresh ref"},
 	tg.ErrFileReferenceInvalid: {CodeUsage, 2, "sticker reference is no longer valid; run `tg msg sticker list` again for a fresh ref"},
 }

internal/program/status/rpc_test.go

@@ -32,7 +32,7 @@ func TestRPC_ClassifiesForbiddenFamily(t *testing.T) {
 }
 
 func TestRPC_ClassifiesUsageFamily(t *testing.T) {
-	for _, typ := range []string{"HIDE_REQUESTER_MISSING", "PARTICIPANT_ID_INVALID"} {
+	for _, typ := range []string{"HIDE_REQUESTER_MISSING", "PARTICIPANT_ID_INVALID", "USER_CREATOR"} {
 		err := rpcErr(typ, 400)
 		require.Equal(t, CodeUsage, Code(err), typ)
 		require.Equal(t, 2, MapExitCode(err), typ)