LINT: remove useless fn

test/archethic_cache/lru_test.exs

@@ -43,13 +43,13 @@ defmodule ArchethicCache.LRUTest do
     end
 
     test "should evict some cached values when there is not enough space available" do
-      binary = get_a_binary_of_bytes(200)
+      binary = :crypto.strong_rand_bytes(200)
 
       {:ok, pid} = LRU.start_link(:my_cache, 500)
 
       LRU.put(:my_cache, :key1, binary)
       LRU.put(:my_cache, :key2, binary)
-      LRU.put(:my_cache, :key3, get_a_binary_of_bytes(400))
+      LRU.put(:my_cache, :key3, :crypto.strong_rand_bytes(400))
 
       :sys.get_state(pid)
 
@@ -58,7 +58,7 @@ defmodule ArchethicCache.LRUTest do
     end
 
     test "should evict the LRU" do
-      binary = get_a_binary_of_bytes(200)
+      binary = :crypto.strong_rand_bytes(200)
 
       {:ok, pid} = LRU.start_link(:my_cache, 500)
 
@@ -98,7 +98,7 @@ defmodule ArchethicCache.LRUTest do
     end
 
     test "should not cache a binary bigger than cache size" do
-      binary = get_a_binary_of_bytes(500)
+      binary = :crypto.strong_rand_bytes(500)
 
       {:ok, pid} = LRU.start_link(:my_cache, 200)
 
@@ -110,7 +110,7 @@ defmodule ArchethicCache.LRUTest do
     end
 
     test "should remove all when purged" do
-      binary = get_a_binary_of_bytes(100)
+      binary = :crypto.strong_rand_bytes(100)
 
       {:ok, _pid} = LRU.start_link(:my_cache, 500)
 
@@ -138,14 +138,4 @@ defmodule ArchethicCache.LRUTest do
       assert "value1b" == LRU.get(:my_cache2, :key1)
     end
   end
-
-  defp get_a_binary_of_bytes(bytes) do
-    get_a_binary_of_bytes(bytes, <<>>)
-  end
-
-  defp get_a_binary_of_bytes(0, acc), do: acc
-
-  defp get_a_binary_of_bytes(bytes, acc) do
-    get_a_binary_of_bytes(bytes - 1, <<0::8, acc::binary>>)
-  end
 end