"[section test]\nchpater 3 text", 3, sectionsManager).build();
List<BookPart> bookParts = new BookPartsBuilder(sectionsManager).addPartFrom(partOneText)
.addChaptersToLastAddedPart(Arrays.asList(first)).addPartFrom(partTwoText)
.addChaptersToLastAddedPart(Arrays.asList(second, third)).build();
BookPart partOne = bookParts.get(0);
BookPart partTwo = bookParts.get(1);
assertEquals(2, bookParts.size());
assertEquals("part one", partOne.getTitle());
assertEquals("image.png", partOne.getIllustrationPath());
assertEquals("part two", partTwo.getTitle());
assertEquals("first", partOne.getChapters().get(0).getTitle());
assertEquals("second", partTwo.getChapters().get(0).getTitle());
assertEquals("third", partTwo.getChapters().get(1).getTitle());
}