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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.prelude.query.parser.test;
import com.yahoo.config.subscription.ConfigGetter;
import com.yahoo.container.QrSearchersConfig;
import com.yahoo.language.Language;
import com.yahoo.language.Linguistics;
import com.yahoo.language.simple.SimpleDetector;
import com.yahoo.language.simple.SimpleLinguistics;
import com.yahoo.prelude.IndexFacts;
import com.yahoo.prelude.IndexModel;
import com.yahoo.prelude.query.Item;
import com.yahoo.prelude.query.NullItem;
import com.yahoo.language.process.SpecialTokenRegistry;
import com.yahoo.language.process.SpecialTokens;
import com.yahoo.search.Query;
import com.yahoo.search.config.IndexInfoConfig;
import com.yahoo.search.query.parser.Parsable;
import com.yahoo.search.query.parser.Parser;
import com.yahoo.search.query.parser.ParserEnvironment;
import com.yahoo.search.query.parser.ParserFactory;
import java.util.ArrayList;
import java.util.List;
import static org.junit.jupiter.api.Assertions.*;
/**
* A utility for writing parser tests
*
* @author bratseth
*/
public class ParsingTester {
private static final Linguistics linguistics = new SimpleLinguistics();
private final IndexFacts indexFacts;
private SpecialTokenRegistry tokenRegistry;
public ParsingTester() {
this(createIndexFacts(), createSpecialTokens());
}
public ParsingTester(SpecialTokens specialTokens) {
this(createIndexFacts(), specialTokens);
}
public ParsingTester(IndexFacts indexFacts) {
this(indexFacts, createSpecialTokens());
}
public ParsingTester(IndexFacts indexFacts, SpecialTokens specialTokens) {
indexFacts.freeze();
this.indexFacts = indexFacts;
tokenRegistry = new SpecialTokenRegistry();
tokenRegistry = new SpecialTokenRegistry(List.of(specialTokens));
}
/**
* Returns an unfrozen version of the IndexFacts this will use.
* This can be used to add new indexes and passing the resulting IndexFacts to the constructor of this.
*/
@SuppressWarnings("deprecation")
public static IndexFacts createIndexFacts() {
String indexInfoConfigID = "file:src/test/java/com/yahoo/prelude/query/parser/test/parseindexinfo.cfg";
ConfigGetter<IndexInfoConfig> getter = new ConfigGetter<>(IndexInfoConfig.class);
IndexInfoConfig config = getter.getConfig(indexInfoConfigID);
return new IndexFacts(new IndexModel(config, (QrSearchersConfig)null));
}
/**
* Returns an unfrozen version of the special tokens this will use.
* This can be used to add new tokens and passing the resulting special tokens to the constructor of this.
*/
public static SpecialTokens createSpecialTokens() {
List<SpecialTokens.Token> tokens = new ArrayList<>();
tokens.add(new SpecialTokens.Token("c++"));
tokens.add(new SpecialTokens.Token(".net", "dotnet"));
tokens.add(new SpecialTokens.Token("tcp/ip"));
tokens.add(new SpecialTokens.Token("c#"));
tokens.add(new SpecialTokens.Token("special-token-fs","firstsecond"));
return new SpecialTokens("default", tokens);
}
/**
* Asserts that the canonical representation of the second string when parsed
* is the first string
*
* @return the produced root
*/
public Item assertParsed(String parsed, String toParse, Query.Type mode) {
return assertParsed(parsed, toParse, null, mode, new SimpleDetector().detect(toParse, null).getLanguage(),
new SimpleLinguistics());
}
/**
* Asserts that the canonical representation of the second string when parsed
* is the first string
*
* @return the produced root
*/
public Item assertParsed(String parsed, String toParse, String filter, Query.Type mode) {
return assertParsed(parsed, toParse, filter, mode, new SimpleDetector().detect(toParse,null).getLanguage());
}
public Item assertParsed(String parsed, String toParse, String filter, Query.Type mode, Language language) {
return assertParsed(parsed, toParse, filter, mode, language, linguistics);
}
/**
* Asserts that the canonical representation of the second string when parsed
* is the first string
*
* @return the produced root
*/
public Item assertParsed(String parsed, String toParse, String filter, Query.Type mode,
Language language, Linguistics linguistics) {
Item root = parseQuery(toParse, filter, language, mode, linguistics);
if (parsed == null) {
assertTrue(root instanceof NullItem, "root is " + root);
} else {
assertNotNull(root, "Got null from parsing " + toParse);
assertEquals(parsed, root.toString(), "Parse of '" + toParse + "'");
}
return root;
}
public Item parseQuery(String query, Language language, Query.Type type) {
return parseQuery(query, null, language, type, new SimpleLinguistics());
}
public Item parseQuery(String query, String filter, Language language, Query.Type type, Linguistics linguistics) {
Parser parser = ParserFactory.newInstance(type, new ParserEnvironment()
.setIndexFacts(indexFacts)
.setLinguistics(linguistics)
.setSpecialTokens(tokenRegistry.getSpecialTokens("default")));
Item root = parser.parse(new Parsable().setQuery(query).setFilter(filter).setLanguage(language)).getRoot();
if (root == null) throw new NullPointerException(); // Should be NullItem
return root;
}
}
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