random_data.rb in avro-1.11.0

- old
+ new

@@ -1,15 +1,16 @@
+# frozen_string_literal: true
 # Licensed to the Apache Software Foundation (ASF) under one
 # or more contributor license agreements.  See the NOTICE file
 # distributed with this work for additional information
 # regarding copyright ownership.  The ASF licenses this file
 # to you under the Apache License, Version 2.0 (the
 # "License"); you may not use this file except in compliance
 # with the License.  You may obtain a copy of the License at
-# 
+#
 # https://www.apache.org/licenses/LICENSE-2.0
-# 
+#
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
@@ -72,11 +73,11 @@
       symbols = schm.symbols
       len = symbols.size
       return nil if len == 0
       symbols[rand(len)]
     when :fixed
-      f = ""
+      f = +""
       schm.size.times { f << BYTEPOOL[rand(BYTEPOOL.size), 1] }
       f
     end
   end
 
@@ -93,10 +94,10 @@
 
   CHARPOOL = 'abcdefghjkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789'
   BYTEPOOL = '12345abcd'
 
   def randstr(chars=CHARPOOL, length=20)
-    str = ''
+    str = +''
     rand(length+1).times { str << chars[rand(chars.size)] }
     str
   end
 
   def rand_int