Fix server tests

[bLandais]

Issue #3 : change "channel" by "room" in tests expected results

Output final results :

[info] Total number of tests run: 25
[info] Suites: completed 2, aborted 0
[info] Tests: succeeded 25, failed 0, canceled 0, ignored 0, pending 0
[info] All tests passed.
[info] Passed: Total 25, Failed 0, Errors 0, Passed 25

[AlexITC]

Please follow the commit guidelines.

Thanks!

[bLandais]

Sorry, I've changed the commit name. Please tell me if there is anything else to change.

[AlexITC]

Thanks!