/**
* Copyright 2013, Landz and its contributors. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package z.channel.unit;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import z.channel.IntHyperLoop;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
public class IntHyperLoopTest {
@Test
public void testSendReceive1() {
IntHyperLoop loop = new IntHyperLoop(8);
boolean suc = loop.trySend(1234);
assertThat(suc, is(true));
IntHyperLoop.OutPort out = loop.createOutPort();
assertThat(out.notReceivable(), is(false));
int v = out.receive();
assertThat(v, is(1234));
System.out.println("IntHyperLoopTest#testPlainSendReceive1 done!");
out = null;
loop = null;
}
@Rule
public ExpectedException exception = ExpectedException.none();
@Test
public void testSendReceive2() {
IntHyperLoop loop = new IntHyperLoop(8);
IntHyperLoop.OutPort out = loop.createOutPort();
boolean suc;
suc = loop.trySend(12);
assertThat(suc, is(true));
suc = loop.trySend(34);
assertThat(suc, is(true));
suc = loop.trySend(56);
assertThat(suc, is(true));
suc = loop.trySend(78);
assertThat(suc, is(true));
suc = loop.trySend(78);
assertThat(suc, is(true));
suc = loop.trySend(56);
assertThat(suc, is(true));
suc = loop.trySend(34);
assertThat(suc, is(true));
suc = loop.trySend(12);
assertThat(suc, is(true));
//fail for hitting buffer boundary
suc = loop.trySend(90);
assertThat(suc, is(false));
//consume first 2 values
assertThat(out.notReceivable(), is(false));
assertThat(out.isReceivable(), is(true));
int v = out.receive();
assertThat(v, is(12));
assertThat(out.notReceivable(), is(false));
assertThat(out.isReceivable(), is(true));
v = out.receive();
assertThat(v, is(34));
//send 3 values again
//fail for hitting buffer boundary
//fail but update minReadCursor
suc = loop.trySend(90);
assertThat(suc, is(false));
//suc again
suc = loop.trySend(90);
assertThat(suc, is(true));
suc = loop.trySend(123);
assertThat(suc, is(true));
// buffer full again
suc = loop.trySend(456);
assertThat(suc, is(false));
//consume the rest
assertThat(out.notReceivable(), is(false));
v = out.receive();
assertThat(v, is(56));
assertThat(out.notReceivable(), is(false));
v = out.receive();
assertThat(v, is(78));
assertThat(out.notReceivable(), is(false));
v = out.receive();
assertThat(v, is(78));
assertThat(out.notReceivable(), is(false));
v = out.receive();
assertThat(v, is(56));
assertThat(out.notReceivable(), is(false));
v = out.receive();
assertThat(v, is(34));
assertThat(out.notReceivable(), is(false));
v = out.receive();
assertThat(v, is(12));
assertThat(out.notReceivable(), is(false));
v = out.receive();
assertThat(v, is(90));
assertThat(out.notReceivable(), is(false));
v = out.receive();
assertThat(v, is(123));
//now loop is empty
assertThat(out.notReceivable(), is(true));
assertThat(out.isReceivable(), is(false));
//expect IllegalStateException
try {
exception.expect(IllegalStateException.class);
v = out.receive();
} finally {
System.out.println("IntHyperLoopTest#testPlainSendReceive2 done!");
out = null;
loop = null;
}
}
@Test
public void testSendReceive3() {
IntHyperLoop loop = new IntHyperLoop(1024);
IntHyperLoop.OutPort out = loop.createOutPort();
for (int i = 0; i < 1024; i++) {
boolean suc = loop.trySend(i);
assertThat(suc, is(true));
}
boolean suc = loop.trySend(123);
assertThat(suc, is(false));
for (int i = 0; i < 1024; i++) {
assertThat(out.notReceivable(), is(false));
int v = out.receive();
assertThat(v, is(i));
}
assertThat(out.notReceivable(), is(true));
assertThat(out.isReceivable(), is(false));
System.out.println("IntHyperLoopTest#testSendReceive3 done!");
out = null;
loop = null;
}
@Test
public void testSendReceive4() {
IntHyperLoop loop = new IntHyperLoop(512);
IntHyperLoop.OutPort out0 = loop.createOutPort();
IntHyperLoop.OutPort out1 = loop.createOutPort();
for (int i = 0; i < 512; i++) {
boolean suc = loop.trySend(i);
assertThat(suc, is(true));
}
boolean suc = loop.trySend(123);
assertThat(suc, is(false));
for (int i = 0; i < 512; i++) {
assertThat(out0.notReceivable(), is(false));
int v = out0.receive();
assertThat(v, is(i));
}
assertThat(out0.notReceivable(), is(true));
assertThat(out0.isReceivable(), is(false));
//but not for sender, still fails
suc = loop.trySend(123);
assertThat(suc, is(false));
//and not for out1
for (int i = 0; i < 512; i++) {
assertThat(out1.notReceivable(), is(false));
assertThat(out1.isReceivable(), is(true));
int v = out1.receive();
assertThat(v, is(i));
}
//fail to wait the minReadCursor update
suc = loop.trySend(Integer.MAX_VALUE);
assertThat(suc, is(false));
//again, but large int
for (int i = 0; i < 512; i++) {
suc = loop.trySend(i << 22);
assertThat(suc, is(true));
}
//still fails
suc = loop.trySend(Integer.MAX_VALUE);
assertThat(suc, is(false));
for (int i = 0; i < 512; i++) {
assertThat(out0.notReceivable(), is(false));
assertThat(out1.isReceivable(), is(true));
int v0 = out0.receive();
int v1 = out1.receive();
assertThat(v0, is(v1));
assertThat(v0, is(i<<22));
}
assertThat(out0.notReceivable(), is(true));
assertThat(out0.isReceivable(), is(false));
assertThat(out1.notReceivable(), is(true));
assertThat(out1.isReceivable(), is(false));
System.out.println("IntHyperLoopTest#testSendReceive4 done!");
out0 = null;
loop = null;
}
}