E2E tests for recovering client state after reconnection (#47)

[evdokimovs]

Resolves #47

Part of #27

Required for #51

Depends on medea-e2e-tests and 47-rpc-connection-loss branches.

Synopsis

We need E2E tests for logic of restoring Member's state after his reconnection.

Solution

Tests will be done based on medea-e2e-tests branch. Connection loss will be emulated via iptables rules. It is supposed to make a server that will add a rule for iptables which will close some port on API endpoints requests. To this port will be connected one of the Members. From this port will be configured redirection to the Medea's RPC port via nginx (maybe something better for this task will be found). Also, iptables server will have mode in which the connection will be disconnected and restored at a random time (in a given range). This mode will be started/stopped by API endpoint calls.

Checklist

• Created PR:
  • In draft mode
  • Name contains Draft: prefix
  • Name contains issue reference
  • Has k:: labels applied
  • Has assignee
• Documentation is updated (if required)
• Tests are updated (if required)
• Changes conform code style
• CHANGELOG entry is added (if required)
• FCM (final commit message) is posted
  • and approved
• Review is completed and changes are approved
• Before merge:
  • Milestone is set
  • PR's name and description are correct and up-to-date
  • Draft: prefix is removed
  • All temporary labels are removed

[evdokimovs]

See this comment.