Improve test coverage and integration tests
Child issues (updated 2020-12-16):
- sbws#27361 (closed)
- sbws#28774 (moved)
- sbws#29358 (closed)
- sbws#29727 (closed)
- sbws#30902 (closed)
- sbws#33166 (moved)
- sbws#33167 (closed)
Integration tests with chutney (NL O2.1):
Coverage (NL O2.2):
Unit tests (NL O2.2):
Edited by Gaba