package org.drools.lang;
/*
* Copyright 2005 JBoss 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.
*/
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
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.antlr.runtime.tree.Tree;
import org.drools.base.evaluators.EvaluatorRegistry;
import org.drools.compiler.DroolsParserException;
import org.drools.lang.dsl.DefaultExpander;
public class ErrorsParserTest extends TestCase {
private DRLParser parser;
protected void setUp() throws Exception {
super.setUp();
this.parser = null;
// initializes pluggable operators
new EvaluatorRegistry();
}
protected void tearDown() throws Exception {
this.parser = null;
super.tearDown();
}
public void testPartialAST() throws Exception {
parseResource( "pattern_partial.drl" );
Tree object = (Tree) this.parser.compilation_unit().getTree();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( this.parser.hasErrors() );
// FIXME check for generated Tree
// final PackageDescr pkg = this.parser.getPackageDescr();
// assertEquals( 1,
// pkg.getRules().size() );
// final RuleDescr rule = (RuleDescr) pkg.getRules().get( 0 );
//
// assertEquals( 1,
// rule.getLhs().getDescrs().size() );
// final PatternDescr pattern = (PatternDescr)
// rule.getLhs().getDescrs().get( 0 );
//
// assertNotNull( pattern );
// assertEquals( "Bar",
// pattern.getObjectType() );
// assertEquals( "foo3",
// pattern.getIdentifier() );
}
public void testNotBindindShouldBarf() throws Exception {
final DRLParser parser = parseResource( "not_with_binding_error.drl" );
parser.compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( parser.hasErrors() );
}
public void testExpanderErrorsAfterExpansion() throws Exception {
final String name = "expander_post_errors.dslr";
final Expander expander = new DefaultExpander();
final String expanded = expander.expand( this.getReader( name ) );
final DRLParser parser = parse( name,
expanded );
parser.compilation_unit();
assertTrue( parser.hasErrors() );
// for ( String message : this.parser.getErrorMessages() ) {
// System.out.println( message );
// }
final DroolsParserException err = (DroolsParserException) parser.getErrors().get( 0 );
assertEquals( 1,
parser.getErrors().size() );
assertEquals( 6,
err.getLineNumber() );
}
public void testInvalidSyntax_Catches() throws Exception {
parseResource( "invalid_syntax.drl" ).compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( this.parser.hasErrors() );
}
public void testMultipleErrors() throws Exception {
parseResource( "multiple_errors.drl" ).compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( this.parser.hasErrors() );
assertEquals( 2,
this.parser.getErrors().size() );
}
public void testPackageGarbage() throws Exception {
parseResource( "package_garbage.drl" ).compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( this.parser.hasErrors() );
}
public void testEvalWithSemicolon() throws Exception {
parseResource( "eval_with_semicolon.drl" ).compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( this.parser.hasErrors() );
assertEquals( 1,
this.parser.getErrorMessages().size() );
assertEquals( "ERR 104",
this.parser.getErrors().get( 0 ).getErrorCode() );
}
public void testLexicalError() throws Exception {
parseResource( "lex_error.drl" ).compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( parser.hasErrors() );
}
public void testTempleteError() throws Exception {
parseResource( "template_test_error.drl" ).compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( parser.hasErrors() );
}
public void testRuleParseLhs2() throws Exception {
final String text = "Message( Message.HELLO )\n";
parse( text ).lhs_pattern();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( parser.hasErrors() );
}
public void testErrorMessageForMisplacedParenthesis() throws Exception {
final DRLParser parser = parseResource( "misplaced_parenthesis.drl" );
parser.compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( "Parser should have raised errors",
parser.hasErrors() );
assertEquals( 2,
parser.getErrors().size() );
assertEquals( "ERR 101",
parser.getErrors().get( 0 ).getErrorCode() );
assertEquals( "ERR 102",
parser.getErrors().get( 1 ).getErrorCode() );
}
public void testNPEOnParser() throws Exception {
final DRLParser parser = parseResource( "npe_on_parser.drl" );
parser.compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( "Parser should have raised errors",
parser.hasErrors() );
assertEquals( 1,
parser.getErrors().size() );
assertTrue( parser.getErrors().get( 0 ).getErrorCode().equals( "ERR 101" ) );
}
public void testCommaMisuse() throws Exception {
final DRLParser parser = parseResource( "comma_misuse.drl" );
try {
parser.compilation_unit();
System.out.println( this.getName() );
for ( String message : this.parser.getErrorMessages() ) {
System.out.println( message );
}
assertTrue( "Parser should have raised errors",
parser.hasErrors() );
assertEquals( 3,
parser.getErrors().size() );
} catch ( NullPointerException npe ) {
fail( "Should not raise NPE" );
}
}
private DRLParser parse(final String text) throws Exception {
this.parser = newParser( newTokenStream( newLexer( newCharStream( text ) ) ) );
return this.parser;
}
private DRLParser parse(final String source,
final String text) throws Exception {
this.parser = newParser( newTokenStream( newLexer( newCharStream( text ) ) ) );
// this.parser.setSource( source );
return this.parser;
}
private Reader getReader(final String name) throws Exception {
final InputStream in = getClass().getResourceAsStream( name );
return new InputStreamReader( in );
}
private DRLParser parseResource(final String name) throws Exception {
final Reader reader = getReader( name );
final StringBuffer text = new StringBuffer();
final char[] buf = new char[1024];
int len = 0;
while ( (len = reader.read( buf )) >= 0 ) {
text.append( buf,
0,
len );
}
return parse( name,
text.toString() );
}
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.setTreeAdaptor( new DroolsTreeAdaptor() );
return p;
}
}