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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.fsa.test;
import com.yahoo.fsa.FSA;
import org.junit.Before;
import org.junit.Test;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.nio.BufferUnderflowException;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author geirst
*/
public class FSADataTestCase {
private static class Worker extends Thread {
FSA.State state;
String word;
String data;
long numRuns;
long numExceptions;
long numAsserts;
public Worker(FSA fsa, String word, String data, long numRuns) {
state = fsa.getState();
this.word = word;
this.data = data;
this.numRuns = numRuns;
this.numExceptions = 0;
this.numAsserts = 0;
}
@Override
public void run() {
for (long i = 0; i < numRuns; ++i) {
state.start();
state.delta(word);
try {
String data = state.dataString();
if (!this.data.equals(data)) {
++numAsserts;
}
} catch (BufferUnderflowException e) {
++numExceptions;
}
}
System.out.println("Worker(" + word + "): numExceptions(" + numExceptions + "), numAsserts(" + numAsserts + ")");
}
};
private FSA fsa;
@Before
public void setUp() throws IOException {
fsa = new FSA(new FileInputStream("src/test/fsa/test-data.fsa"));
}
@Test
public void testClose() throws IOException {
FSA fsa = new FSA(new FileInputStream("src/test/fsa/test-data.fsa"));
fsa.close();
}
@Test
public void testBasic() {
FSA.State state = fsa.getState();
state.delta("aa");
assertTrue(state.isFinal());
assertEquals("aa data", state.dataString());
state.start();
state.delta("bbbb");
assertTrue(state.isFinal());
assertEquals("bbbb data", state.dataString());
state.start();
state.delta("c");
assertTrue(state.isFinal());
assertEquals("c data", state.dataString());
state.start();
state.delta("dddddd");
assertTrue(state.isFinal());
assertEquals("dddddd data", state.dataString());
}
@Test
public void testMultipleThreads() {
long numRuns = 10000;
List<Worker> workers = new ArrayList<Worker>();
workers.add(new Worker(fsa, "aa", "aa data", numRuns));
workers.add(new Worker(fsa, "bbbb", "bbbb data", numRuns));
workers.add(new Worker(fsa, "c", "c data", numRuns));
workers.add(new Worker(fsa, "dddddd", "dddddd data", numRuns));
for (int i = 0; i < workers.size(); ++i) {
workers.get(i).start();
}
try {
for (int i = 0; i < workers.size(); ++i) {
workers.get(i).join();
}
} catch (InterruptedException e) {
assertTrue(false);
}
for (int i = 0; i < workers.size(); ++i) {
assertEquals(0, workers.get(i).numExceptions);
assertEquals(0, workers.get(i).numAsserts);
}
}
}
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