public class CounterTest {
private Counter counter = new Counter("255");
private Element document = counter.toHtmlDocument();
@Test
public void containsLinks() throws Exception {
Element inc = document.findLinkByLabel("inc");
assertEquals("Inc has bad url", "?value=256", inc.getAttribute("href"));
Element dec = document.findLinkByLabel("dec");
assertEquals("Dec has bad url", "?value=254", dec.getAttribute("href"));
}
@Test
public void containsDisplay() throws Exception {
Element display = document.findElementById("display");
assertEquals("Display shows wrong value", "0xff", display.contentsAsText());
}
@Test
public void defaultValueIsZero() throws Exception {
document = new Counter(null).toHtmlDocument();
assertEquals("0x0", document.findElementById("display").contentsAsText());
}
}
@Test
public void countDownTest() {
EventSource<Void> src1 = new EventSource<Void>();
EventSource<Void> src2 = new EventSource<Void>();
EventSource<Void> reset = new EventSource<Void>();
BiFunction<Integer, Void, Tuple2<Integer, Optional<String>>> countdown =
(s, i) -> s == 1 ? t(3, Optional.of("COUNTDOWN REACHED")) : t(s - 1, Optional.empty());
EventStream<String> countdowns =
StateMachine.init(3)
.on(src1)
.transmit(countdown)
.on(src2)
.transmit(countdown)
.on(reset)
.transition((s, i) -> 3)
.toEventStream();
Counter counter = new Counter();
Subscription sub = countdowns.hook(x -> counter.inc()).pin();
src1.push(null);
src2.push(null);
assertEquals(0, counter.get());
src1.push(null);
assertEquals(1, counter.getAndReset());
src2.push(null);
src2.push(null);
reset.push(null);
assertEquals(0, counter.get());
src2.push(null);
assertEquals(0, counter.get());
src1.push(null);
assertEquals(0, counter.get());
src2.push(null);
assertEquals(1, counter.getAndReset());
sub.unsubscribe();
src1.push(null);
src1.push(null);
src1.push(null);
src1.push(null);
src1.push(null);
src1.push(null);
assertEquals(0, counter.get());
}
public String doStuff() {
counter.count().set(counter.count().get() + 1);
return null;
}
