Fix tests

Fix tests

Shorten the key

Remove obsoleted flush call from the tests

Fix antipattern as recommended by DeepSource

Refs https://deepsource.io/gh/grafov/kiwi/issue/SCC-S1034/occurrences

Add reset-all command for a sink filters

Fix antipattern as recommended by deepsource.io

Refs https://deepsource.io/gh/grafov/kiwi/issue/SCC-S1034/occurrences

Fix side effects of sink.Close() refs #4 and #5

Fixed in a straight way by removing logic with sink ID. The logic was
corrupted any way. Aman Gupta explained the problem in #5 and figured
out the cause with sink ID. In this change I suppose that a number of
sinks will not very large.

Merge pull request #3 from grafov/new-filters-api

Rename sink filters for code clarity (API changes!)

Fix type matching