SeriesInfoExtractorServiceImpl.extractCondition(): add unit tests

[0pdd]

The puzzle 1326-d460ac09 from #1326 has to be resolved:

mystamps/src/main/java/ru/mystamps/web/feature/series/importing/SeriesInfoExtractorServiceImpl.java

Line 500 in 28eab06

// @todo #1326 SeriesInfoExtractorServiceImpl.extractCondition(): add unit tests

The puzzle was created by Slava Semushin on 21-May-20.