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/*
* Copyright 2009 Phil Burk, Mobileer Inc
*
* 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 com.jsyn.engine;
import com.jsyn.io.AudioFifo;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.fail;
public class TestFifo {
@Test
public void testBasic() {
Thread watchdog = startWatchdog(600);
AudioFifo fifo = new AudioFifo();
fifo.setReadWaitEnabled(false);
fifo.allocate(8);
assertEquals(0, fifo.available(), "start empty");
assertEquals(Double.NaN, fifo.read(), "read back Nan when empty");
fifo.write(1.0);
assertEquals(1, fifo.available(), "added one value");
assertEquals(1.0, fifo.read(), "read back same value");
assertEquals(0, fifo.available(), "back to empty");
for (int i = 0; i < fifo.size(); i++) {
assertEquals(i, fifo.available(), "adding data");
fifo.write(100.0 + i);
}
for (int i = 0; i < fifo.size(); i++) {
assertEquals(fifo.size() - i, fifo.available(), "removing data");
assertEquals(100.0 + i, fifo.read(), "reading back data");
}
watchdog.interrupt();
}
@Test
public void testReadAvailable() {
Thread watchdog = startWatchdog(600);
AudioFifo fifo = new AudioFifo();
fifo.setReadWaitEnabled(false);
fifo.allocate(8);
final double x1 = 0.234;
fifo.write(x1);
final double x2 = 0.750;
fifo.write(x2);
assertEquals(2, fifo.available(), "added two values");
double[] buffer = new double[6];
int numRead = fifo.read(buffer, 2, buffer.length - 2);
assertEquals(2, numRead, "should have read two values");
assertEquals(x1, buffer[2], "read x1");
assertEquals(x2, buffer[3], "read x2");
watchdog.interrupt();
}
/**
* Wrap around several times to test masking.
*/
@Test
public void testWrapping() {
final int chunk = 5;
AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
double value = 1000.0;
for (int i = 0; i < (fifo.size() * chunk); i++) {
value = checkFifoChunk(fifo, value, chunk);
}
}
private double checkFifoChunk(AudioFifo fifo, double value, int chunk) {
for (int i = 0; i < chunk; i++) {
assertEquals(i, fifo.available(), "adding data");
fifo.write(value + i);
}
for (int i = 0; i < chunk; i++) {
assertEquals(chunk - i, fifo.available(), "removing data");
assertEquals(value + i, fifo.read(), "reading back data");
}
return value + chunk;
}
@Test
public void testBadSize() {
try {
AudioFifo fifo = new AudioFifo();
fifo.allocate(20); // not power of 2
fail("should not get here");
} catch (IllegalArgumentException ignored) {
return;
}
fail("should have caught size exception");
}
@Test
public void testSingleReadWait() {
final int chunk = 5;
final AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
fifo.setWriteWaitEnabled(false);
fifo.setReadWaitEnabled(true);
final double value = 50.0;
// Schedule a delayed write in another thread.
new Thread(() -> {
try {
Thread.sleep(200);
for (int i = 0; i < chunk; i++) {
fifo.write(value + i);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}).start();
Thread watchdog = startWatchdog(500);
for (int i = 0; i < chunk; i++) {
assertEquals(value + i, fifo.read(), "reading back data");
}
watchdog.interrupt();
}
private Thread startWatchdog(final int msec) {
Thread watchdog = new Thread(() -> {
try {
Thread.sleep(msec);
fail("test must still be waiting");
} catch (InterruptedException ignored) {
}
});
watchdog.start();
return watchdog;
}
@Test
public void testSingleWriteWait() {
final int chunk = 13;
final AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
fifo.setWriteWaitEnabled(true);
fifo.setReadWaitEnabled(true);
final double value = 50.0;
// Schedule a delayed read in another thread.
Thread readThread = new Thread(() -> {
try {
Thread.sleep(200);
for (int i = 0; i < chunk; i++) {
// LOGGER.debug( "testSingleWriteWait: try to read" );
double got = fifo.read();
assertEquals(value + i, got, "adding data");
// LOGGER.debug( "testSingleWriteWait: read " + got );
}
} catch (InterruptedException e) {
e.printStackTrace();
}
});
readThread.start();
Thread watchdog = startWatchdog(500);
// Try to write more than will fit so we will hang.
for (int i = 0; i < chunk; i++) {
fifo.write(value + i);
}
watchdog.interrupt();
try {
readThread.join(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
assertFalse(readThread.isAlive(), "readThread should be done.");
}
@Test
public void testBlockReadWait() {
final int chunk = 50;
final AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
fifo.setWriteWaitEnabled(false);
fifo.setReadWaitEnabled(true);
final double value = 300.0;
double[] readBuffer = new double[chunk];
// Schedule delayed writes in another thread.
new Thread(() -> {
int numWritten = 0;
double[] writeBuffer = new double[4];
try {
while (numWritten < chunk) {
Thread.sleep(30);
for (int i = 0; i < writeBuffer.length; i++) {
writeBuffer[i] = value + numWritten;
numWritten += 1;
}
fifo.write(writeBuffer);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}).start();
Thread watchdog = startWatchdog(600);
fifo.read(readBuffer);
for (int i = 0; i < chunk; i++) {
assertEquals(value + i, readBuffer[i], "reading back data");
}
watchdog.interrupt();
}
@Test
public void testBlockReadAndWriteWaitStress() {
final int chunk = 3000000;
final AudioFifo fifo = new AudioFifo();
fifo.allocate(8);
fifo.setWriteWaitEnabled(true);
fifo.setReadWaitEnabled(true);
final double value = 50.0;
// Schedule a delayed write in another thread.
new Thread(() -> {
try {
Thread.sleep(200);
for (int i = 0; i < chunk; i++) {
fifo.write(value + i);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}).start();
// TODO Watchdog is apparently not working.
// I set the watchdog to be very short and it did not trigger.
Thread watchdog = startWatchdog(10 * 1000);
for (int i = 0; i < chunk; i++) {
assertEquals(value + i, fifo.read(), "reading back data");
}
watchdog.interrupt();
}
}
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