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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.searchlib.treenet;
import com.yahoo.searchlib.rankingexpression.RankingExpression;
import com.yahoo.searchlib.treenet.parser.ParseException;
import com.yahoo.searchlib.treenet.parser.TreeNetParser;
import org.junit.Test;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.StringReader;
import static org.junit.Assert.assertEquals;
/**
* @author Simon Thoresen Hult
*/
public class TreeNetParserTestCase {
private static final boolean WRITE_FILES = false;
@Test
public void testRankingExpression() {
for (int i = 1; i <= 8; ++i) {
String inputFile = String.format("src/test/files/treenet%02d.model", i);
String outputFile = String.format("src/test/files/ranking%02d.expression", i);
String input = readFile(inputFile);
String expression = convertModel(inputFile, input);
if (WRITE_FILES) {
writeFile(outputFile, expression);
}
else {
String output = readFile(outputFile);
assertParseable(output, outputFile);
assertEquals(output.trim(), expression);
}
}
}
private void assertParseable(String rankingExpressionString,String fileName) {
try {
new RankingExpression(rankingExpressionString);
}
catch (com.yahoo.searchlib.rankingexpression.parser.ParseException e) {
throw new RuntimeException("Could not parse ranking expression in '" + fileName + "'",e);
}
}
private String convertModel(String modelFile, String model) {
try {
TreeNetParser parser = new TreeNetParser(new StringReader(model));
return parser.treeNet().toRankingExpression();
} catch (ParseException e) {
throw new AssertionError("In model " + modelFile + ": " + e.getMessage(), e);
}
}
private String readFile(String file) {
try {
StringBuilder ret = new StringBuilder();
BufferedReader in = new BufferedReader(new FileReader(file));
while (true) {
String str = in.readLine();
if (str == null) {
break;
}
ret.append(str).append("\n");
}
return ret.toString();
} catch (IOException e) {
throw new AssertionError(e);
}
}
private void writeFile(String file, String content) {
try {
FileWriter out = new FileWriter(file);
out.write(content);
out.close();
} catch (IOException e) {
throw new AssertionError(e);
}
}
}
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