| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.pig.parser; |
| |
| import java.io.IOException; |
| |
| import junit.framework.Assert; |
| |
| import org.antlr.runtime.CharStream; |
| |
| import org.antlr.runtime.Token; |
| import org.junit.Test; |
| |
| public class TestQueryLexer { |
| |
| @Test |
| public void TestLexer() throws IOException { |
| CharStream input = new QueryParserFileStream( "test/org/apache/pig/parser/TestLexer.pig" ); |
| QueryLexer lexer = new QueryLexer( input ); |
| int tokenCount = 0; |
| Token token; |
| while( ( token = lexer.nextToken() ).getType() != Token.EOF ) { |
| if( token.getChannel() == Token.HIDDEN_CHANNEL ) |
| continue; |
| tokenCount++; |
| if( token.getText().equals( ";" ) ) { |
| System.out.println( token.getText() ); |
| } else { |
| System.out.print( token.getText() + "(" + token.getType() + ") " ); |
| } |
| } |
| |
| // While we can check more conditions, such as type of each token, for now I think the following |
| // is enough. If the token type is wrong, it will be most likely caught by the parser. |
| Assert.assertEquals( 455, tokenCount ); |
| Assert.assertEquals( 0, lexer.getNumberOfSyntaxErrors() ); |
| } |
| |
| @Test |
| public void test2() throws IOException { |
| String query = "A = load 'input' using PigStorage(';');" + |
| "B = foreach ^ A generate string.concatsep( ';', $1, $2 );"; |
| CharStream input = new QueryParserStringStream( query, null ); |
| QueryLexer lexer = new QueryLexer( input ); |
| Token token; |
| try { |
| while( ( token = lexer.nextToken() ).getType() != Token.EOF ) { |
| if( token.getChannel() == Token.HIDDEN_CHANNEL ) |
| continue; |
| if( token.getText().equals( ";" ) ) { |
| System.out.println( token.getText() ); |
| } else { |
| System.out.print( token.getText() + "(" + token.getType() + ") " ); |
| } |
| } |
| } catch(Exception ex) { |
| Assert.assertTrue( ex.getMessage().contains( "Unexpected character" ) ); |
| return; |
| } |
| Assert.fail( "Query should fail." ); |
| } |
| } |