@Test
public void testConstructor() {
Symbol symbol = new Symbol("Symbol1", SymbolType.CONTENT, 2);
Production production = new Production(symbol, 7);
assertEquals("head", symbol, production.getHead());
assertEquals("handle", 0, production.getHandle().size());
assertEquals("index", 7, production.getTableIndex());
}
@Test
public void testToString() {
Symbol symbol = new Symbol("Symbol1", SymbolType.NON_TERMINAL, 2);
SymbolList list = new SymbolList();
Symbol symbol2 = new Symbol("Symbol2", SymbolType.NON_TERMINAL, 3);
Symbol symbol3 = new Symbol("Symbol3", SymbolType.CONTENT, 4);
list.add(symbol2);
list.add(symbol3);
Production production = new Production(symbol, 7);
production.setHandle(list);
assertEquals("wrong text", "<Symbol1> ::= <Symbol2> 'Symbol3'", production.toString());
}
@Test
public void testSetters() {
Symbol symbol = new Symbol("Symbol1", SymbolType.CONTENT, 2);
Production production = new Production(symbol, 7);
// Setting to null creates a new, empty list
production.setHandle(null);
assertNotNull("handle", production.getHandle());
Symbol newSymbol = new Symbol("Symbol2", SymbolType.CONTENT, 2);
production.setHead(newSymbol);
SymbolList newList = new SymbolList(3);
production.setHandle(newList);
production.setTableIndex(44);
assertEquals("head", newSymbol, production.getHead());
assertEquals("handle", newList, production.getHandle());
assertEquals("handle size", 3, production.getHandle().size());
assertEquals("index", 44, production.getTableIndex());
}
@Test
public void testContainsOneNonTerminal() {
Production production = new Production(new Symbol(), 2);
assertFalse("null list", production.containsOneNonTerminal());
production.setHandle(new SymbolList());
assertFalse("empty list", production.containsOneNonTerminal());
production.getHandle().clear();
production.getHandle().add(new Symbol("Symbol1", SymbolType.NOISE, 1));
assertFalse("one terminal symbol", production.containsOneNonTerminal());
production.getHandle().clear();
production.getHandle().add(new Symbol("Symbol1", SymbolType.NON_TERMINAL, 1));
assertTrue("one non-terminal", production.containsOneNonTerminal());
production.getHandle().add(new Symbol("Symbol2", SymbolType.NON_TERMINAL, 2));
assertFalse("two non-terminals", production.containsOneNonTerminal());
production.getHandle().clear();
production.getHandle().add(new Symbol("Symbol1", SymbolType.NON_TERMINAL, 1));
assertTrue("one non-terminal", production.containsOneNonTerminal());
production.getHandle().add(new Symbol("Symbol2", SymbolType.NOISE, 2));
assertFalse("one terminal/one non-terminal", production.containsOneNonTerminal());
}
