package org.drools.lang;
import junit.framework.TestCase;
import org.antlr.runtime.ANTLRStringStream;
import org.antlr.runtime.CharStream;
import org.antlr.runtime.CommonTokenStream;
import org.antlr.runtime.Lexer;
import org.antlr.runtime.TokenStream;
import org.drools.lang.descr.FieldConstraintDescr;
import org.drools.lang.descr.PatternDescr;
public class MVELDumperTest extends TestCase {
private MVELDumper dumper;
protected void setUp() throws Exception {
super.setUp();
dumper = new MVELDumper();
}
protected void tearDown() throws Exception {
super.tearDown();
}
public void testDump() throws Exception {
String input = "Cheese( price > 10 && < 20 || == $val || == 30 )";
String expected = "( ( price > 10 && price < 20 ) || price == $val || price == 30 )" ;
DRLParser parser = parse( input );
PatternDescr pattern = (PatternDescr) parser.fact( null );
FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
String result = dumper.dump( fieldDescr );
assertEquals( expected, result );
}
public void testDumpMatches() throws Exception {
String input = "Cheese( type.toString matches \"something\\swith\\tsingle escapes\" )";
String expected = "type.toString ~= \"something\\\\swith\\\\tsingle escapes\"" ;
DRLParser parser = parse( input );
PatternDescr pattern = (PatternDescr) parser.fact( null );
FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
String result = dumper.dump( fieldDescr );
assertEquals( expected, result );
}
public void testDumpMatches2() throws Exception {
String input = "Cheese( type.toString matches 'something\\swith\\tsingle escapes' )";
String expected = "type.toString ~= \"something\\\\swith\\\\tsingle escapes\"" ;
DRLParser parser = parse( input );
PatternDescr pattern = (PatternDescr) parser.fact( null );
FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
String result = dumper.dump( fieldDescr );
assertEquals( expected, result );
}
public void testDumpMatches3() throws Exception {
String input = "Map( this[\"content\"] matches \"hello ;=\" )";
String expected = "this[\"content\"] ~= \"hello ;=\"" ;
DRLParser parser = parse( input );
PatternDescr pattern = (PatternDescr) parser.fact( null );
FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
String result = dumper.dump( fieldDescr );
assertEquals( expected, result );
}
public void testDumpWithDateAttr() throws Exception {
String input = "Person( son.birthDate == \"01-jan-2000\" )";
String expected = "son.birthDate == org.drools.base.evaluators.DateFactory.parseDate( \"01-jan-2000\" )" ;
DRLParser parser = parse( input );
PatternDescr pattern = (PatternDescr) parser.fact( null );
FieldConstraintDescr fieldDescr = (FieldConstraintDescr) pattern.getConstraint().getDescrs().get( 0 );
String result = dumper.dump( fieldDescr, true );
assertEquals( expected, result );
}
private DRLParser parse(final String text) throws Exception {
return newParser( newTokenStream( newLexer( newCharStream( text ) ) ) );
}
private CharStream newCharStream(final String text) {
return new ANTLRStringStream( text );
}
private DRLLexer newLexer(final CharStream charStream) {
return new DRLLexer( charStream );
}
private TokenStream newTokenStream(final Lexer lexer) {
return new CommonTokenStream( lexer );
}
private DRLParser newParser(final TokenStream tokenStream) {
final DRLParser p = new DRLParser( tokenStream );
//p.setParserDebug( true );
return p;
}
}