@Test
public void sendMessageFromThreadToThread() throws Exception {
final Channel<String> ch = newChannel();
Thread thread =
new Thread(
new Runnable() {
@Override
public void run() {
try {
Thread.sleep(100);
ch.send("a message");
} catch (InterruptedException | SuspendExecution ex) {
throw new AssertionError(ex);
}
}
});
thread.start();
String m = ch.receive();
assertThat(m, equalTo("a message"));
thread.join();
}
@Ignore
@Test
public void whenReceiveNotCalledFromOwnerThenThrowException4() throws Exception {
assumeTrue(Debug.isAssertionsEnabled());
final Channel<String> ch = newChannel();
Thread thread =
new Thread(
new Runnable() {
@Override
public void run() {
try {
ch.receive();
} catch (InterruptedException ex) {
throw new AssertionError(ex);
} catch (SuspendExecution e) {
throw new AssertionError(e);
}
}
});
thread.start();
Thread.sleep(100);
ch.send("a message");
boolean thrown = false;
try {
ch.receive();
} catch (Throwable e) {
thrown = true;
}
assertTrue(thrown);
thread.join();
}
// Do some simple concurrent testing
public void testConcurrentSimple() throws InterruptedException {
final NonBlockingIdentityHashMap<String, String> nbhm =
new NonBlockingIdentityHashMap<String, String>();
final String[] keys = new String[20000];
for (int i = 0; i < 20000; i++) keys[i] = "k" + i;
// In 2 threads, add & remove even & odd elements concurrently
Thread t1 =
new Thread() {
public void run() {
work_helper(nbhm, "T1", 1, keys);
}
};
t1.start();
work_helper(nbhm, "T0", 0, keys);
t1.join();
// In the end, all members should be removed
StringBuffer buf = new StringBuffer();
buf.append("Should be emptyset but has these elements: {");
boolean found = false;
for (String x : nbhm.keySet()) {
buf.append(" ").append(x);
found = true;
}
if (found) System.out.println(buf + " }");
assertThat("concurrent size=0", nbhm.size(), is(0));
for (String x : nbhm.keySet()) {
assertTrue("No elements so never get here", false);
}
}
