@Test public void numberOfPartsIsAdjusted() { int numParts = this.message.getNumberOfParts(); this.message.setNumberOfParts(2 * numParts + 1); assertEquals(2 * numParts + 1, this.message.getNumberOfParts()); this.message.addBytesPart(new byte[1]); this.message.addIntPart(2); this.message.addLongPart(3); this.message.addObjPart("4"); this.message.addStringPart("5"); assertEquals(5, this.message.getNextPartNumber()); }