[JAMES-2853] Testing toolbox for Remote Delivery

• Type: Test
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.5.0
• Component/s: Remote Delivery, tests
• Assignee: Unassigned
• Reporter: Benoit Tellier
• Created: 02/Aug/19 14:54
• Updated: 18/Jun/20 04:52
• Resolved: 18/Jun/20 04:52

Description

Today, remoteDelivery is lightly tested and error corner cases are not tested.

Several bugs are already known cf JAMES-2097

JAMES-2442 is an attempt to write such tests but some of these tests require not-yet available tooling.

In order to write such tests we need :

• 1. a tcp mock server (replying smtp error codes)
• 2. listening on port 25
• 3. on it's own IP

The FakeSmtp docker approach we had so far covers 2 & 3. We did not find yet a good solution for 1.

What we had in mind is:

• Writing our own SMTP mock server (POC available here: https://github.com/linagora/james-project/pull/2545
• Introduce a JSON format corresponding to the behavior of this Mock server
• load this via HTTP to allow remote setup
• exposes delivered emails over HTTP to allow writing assertions
• dockerizing this.

This will allow writing the tests we are missing.