Explicit integration (and unit?) tests for the summary

[nickvergessen]

It would be nice to add (either here or in another pull request) integration tests for getReactions() (the integration tests currently check the basic information included in the message, but not the extended one with the participants provided by getReactions()) as well as unit tests for the summary.

Originally posted by @danxuliu in #7205 (comment)

[vitormattos]

Related PR: nextcloud/server#32220

[nickvergessen]

Seems you misunderstood.
Basically the idea is that:
https://github.com/nextcloud/spreed/blob/master/tests/integration/features/reaction/react.feature
Should have a check like:

    Then user "participant1" sees the following reactions on message "Message 1" in room "room" with 200
      | room | actorType | actorId      | actorDisplayName         | reaction |
      | room | guests    | guest        |                          | 👤 |
      | room | users     | participant1 | participant1-displayname | 👍 |
      | room | users     | participant1 | participant1-displayname | 🚀 |
      | room | users     | participant2 | participant2-displayname | 👍 |

But that check does not yet exist

[nickvergessen]

Done in

spreed/tests/integration/features/reaction/react.feature

Lines 145 to 149 in 3ff4371

	And user "participant1" retrieve reactions "all" of message "Message 1" in room "room" with 200
	| actorType | actorId | actorDisplayName | reaction |
	| users | participant1 | participant1-displayname | 👍 |
	| users | participant2 | participant2-displayname | 👎 |
	| users | participant2 | participant2-displayname | 👍 |