SymbolList list = new SymbolList();
assertEquals("Test if list is empty", 0, list.getSymbolCount());
assertEquals("Test if list is empty", true, list.isEmpty());
list.addSymbol(a);
assertEquals("Test if list is not empty", 1, list.getSymbolCount());
assertEquals("Test if list is not empty", false, list.isEmpty());
assertEquals("Test if symbols are equal", a, list.getSymbol(0));