@Test
public void shouldPushTokenAtBegining() {
Token pushedToken = new Token("push", 1, 0);
List<Token> pushedTokenList = new ArrayList<>();
pushedTokenList.add(pushedToken);
tokenQueue.pushForward(pushedTokenList);
assertThat(tokenQueue.peek(), is(pushedToken));
assertThat(tokenQueue.size(), is(4));
}
@Test
public void shouldPollToken() {
Token token = tokenQueue.poll();
assertThat(token, is(new Token("a", 1, 0)));
assertThat(tokenQueue.size(), is(2));
}
@Test
public void shouldPeekToken() {
Token token = tokenQueue.peek();
assertThat(token, is(new Token("a", 1, 0)));
assertThat(tokenQueue.size(), is(3));
}