Testing Phoenix Channel of Elixir app on CircleCI fails intermittently.
We didn’t do async test so there are no reason for this error.
Do you have any idea?
[error] GenServer #PID<0.8973.0> terminating
** (DBConnection.OwnershipError) cannot find ownership process for #PID<0.8973.0>.
When using ownership, you must manage connections in one
of the four ways:
* By explicitly checking out a connection
* By explicitly allowing a spawned process
* By running the pool in shared mode
* By using :caller option with allowed process
The first two options require every new process to explicitly
check a connection out or be allowed by calling checkout or
allow respectively.
The third option requires a {:shared, pid} mode to be set.
If using shared mode in tests, make sure your tests are not
async.
The fourth option requires [caller: pid] to be used when
checking out a connection from the pool. The caller process
should already be allowed on a connection.
If you are reading this error, it means you have not done one
of the steps above or that the owner process has crashed.
See Ecto.Adapters.SQL.Sandbox docs for more information.
