Allow RESP empty array

Author: moticless

src/ext/readerResp.c

@@ -299,9 +299,10 @@ static RespRes readRespReplyBulkArray(RespReaderCtx *ctx, RespReplyBuff *buffInf
                     return RESP_REPLY_ERR;
                 }
 
+                /* if empty array then jump to READ_END of array */
                 if (ctx->numBulksArray == 0) {
-                    snprintf(ctx->errorMsg, sizeof(ctx->errorMsg), "Bulk Array must be bigger than zero");
-                    return RESP_REPLY_ERR;
+                    ctx->typeArrayState = READ_END;
+                    break;
                 }
 
                 ctx->typeArrayState = READ_NEXT_BULK_HDR;

test/test_resp_reader.c

@@ -118,8 +118,8 @@ static void test_reply_long_err_trimmed_by_report(void **state) {
 static void test_mixture_and_fragmented(void **state) {
     UNUSED(state);
     RespRes res;
-    int expReplies = 5;
-    char bulk[] = "*3\r\n$2\r\n12\r\n$1\r\nA\r\n$3\r\nABC\r\n"
+    int expReplies = 6;
+    char bulk[] = "*0\r\n*3\r\n$2\r\n12\r\n$1\r\nA\r\n$3\r\nABC\r\n"
                   "+OK\r\n$5\r\nmylib\r\n+OK\r\n+OK\r\n";
     RespReaderCtx ctx;