private static void RecursiveAcquirePoolItems(int poolItemCount, NLog.Internal.StringBuilderPool pool, string payload, bool mustGrow)
{
if (poolItemCount <= 0)
{
return;
}
using (var itemHolder = pool.Acquire())
{
Assert.Equal(0, itemHolder.Item.Length);
Assert.True(payload.Length > itemHolder.Item.Capacity == mustGrow);
itemHolder.Item.Append(payload);
RecursiveAcquirePoolItems(poolItemCount - 1, pool, payload, mustGrow);
}
}
public void StringBuilderPoolMaxCapacityTest()
{
int poolItemCount = 10;
NLog.Internal.StringBuilderPool pool = new NLog.Internal.StringBuilderPool(poolItemCount);
string mediumPayload = new string('A', 300000);
RecursiveAcquirePoolItems(poolItemCount, pool, mediumPayload, true); // Verify fast-pool + slow-pool must grow
RecursiveAcquirePoolItems(poolItemCount, pool, mediumPayload, false); // Verify fast-pool + slow-pool has kept their capacity
string largePayload = new string('A', 1000000);
RecursiveAcquirePoolItems(poolItemCount, pool, largePayload, true);
using (var itemHolder = pool.Acquire())
{
Assert.Equal(0, itemHolder.Item.Length);
Assert.True(largePayload.Length <= itemHolder.Item.Capacity); // Verify fast-pool has kept its capacity
RecursiveAcquirePoolItems(poolItemCount, pool, mediumPayload, true); // Verify slow-pool must grow
}
}