JavaFileHandler1Test.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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.
 */

package org.kie.workbench.common.services.datamodeller.parser;

import java.io.InputStream;

import org.junit.Test;
import org.kie.workbench.common.services.datamodeller.parser.descr.ClassDescr;
import org.kie.workbench.common.services.datamodeller.parser.descr.DescriptorFactoryImpl;
import org.kie.workbench.common.services.datamodeller.parser.descr.FieldDescr;
import org.kie.workbench.common.services.datamodeller.parser.descr.MethodDescr;
import org.kie.workbench.common.services.datamodeller.parser.descr.TextTokenElementDescr;
import org.kie.workbench.common.services.datamodeller.parser.util.ParserUtil;

import static org.junit.Assert.*;

public class JavaFileHandler1Test extends JavaFileHandlerBaseTest {

    String fileContents[] = new String[ 6 ];

    public JavaFileHandler1Test( ) throws Exception {
        super( "JavaFileHandler1.java" );

        InputStream inputStream;
        for ( int i = 0; i < fileContents.length; i++ ) {
            inputStream = this.getClass( ).getResourceAsStream( "JavaFileHandler1.java.result" + i + ".txt" );
            fileContents[ i ] = ParserUtil.readString( inputStream );

        }
    }

    private void assertStrings( String a, String b ) {
        for ( int i = 0; i < a.length( ) && i < b.length( ); i++ ) {
            assertEquals( "character i: " + i + " expected: " + a.charAt( i ) + " current: " + b.length( ), a.charAt( i ), b.charAt( i ) );
        }
    }

    @Test
    public void testMethodRemoval( ) {
        try {

            ClassDescr classDescr = fileHandler.getFileDescr( ).getClassDescr( );
            MethodDescr methodDescr = classDescr.getMethod( "getField2" );
            assertNotNull( methodDescr );
            classDescr.getElements( ).remove( methodDescr );

            assertStrings( fileContents[ 0 ], fileHandler.buildResult( ) );

            methodDescr = classDescr.getMethod( "setField1" );
            assertNotNull( methodDescr );
            classDescr.getElements( ).remove( methodDescr );
            assertStrings( fileContents[ 1 ], fileHandler.buildResult( ) );

            methodDescr = classDescr.getMethod( "getField1" );
            assertNotNull( methodDescr );
            classDescr.getElements( ).remove( methodDescr );
            assertStrings( fileContents[ 2 ], fileHandler.buildResult( ) );

            FieldDescr fieldDescr = classDescr.getField( "field12" );
            assertNotNull( fieldDescr );
            boolean deleted = classDescr.removeField( "field12" );
            assertEquals( true, deleted );
            assertEquals( fileContents[ 3 ], fileHandler.buildResult( ) );

            fieldDescr = DescriptorFactoryImpl.getInstance( ).createFieldDescr( "public int field100 = 12;" );
            StringBuilder indentStr = new StringBuilder(System.getProperty("line.separator") +
                                                                System.getProperty("line.separator") + "    ");
            TextTokenElementDescr indent = new TextTokenElementDescr( "", 0, indentStr.length( ) - 1, 1, 0 );
            indent.setSourceBuffer( indentStr );

            classDescr.addField( fieldDescr );
            classDescr.getElements( ).addMemberBefore( fieldDescr, indent );
            assertEquals( fileContents[ 4 ], fileHandler.buildResult( ) );

            methodDescr = DescriptorFactoryImpl.getInstance( ).createMethodDescr( "public java.lang.String getAddress() { return null; }" );
            indentStr = new StringBuilder( "\n\n    " );
            indent = new TextTokenElementDescr( "", 0, indentStr.length( ) - 1, 1, 0 );
            indent.setSourceBuffer( indentStr );

            classDescr.addMethod( methodDescr );
            classDescr.getElements( ).addMemberBefore( methodDescr, indent );
            assertEquals( fileContents[ 5 ], fileHandler.buildResult( ) );

            /*

            TODO add more cases

            assertEquals(fileContents[0], fileHandler.build());


            fileHandler.deleteMethod("getField1");
            logger.debug(fileHandler.build());

            fileHandler.deleteField("setField2");
            logger.debug(fileHandler.build());

            fileHandler.deleteMethod("setField2");
            fileHandler.addField("\n\tprotected String surname = null;\n");
            fileHandler.deleteMethod("setField1");
            fileHandler.deleteField("field7");
            fileHandler.addMethod("\n\tpublic static final java.lang.String echo(String msg) {\n\t\treturn msg;\n\t}\n");
            fileHandler.deleteField("field8");
            fileHandler.addField("\n\tprotected int i = 0;\n");
            fileHandler.deleteField("field6");
            fileHandler.deleteField("field9");
            fileHandler.deleteField("field11");
            fileHandler.deleteField("field14");

            fileHandler.addValuePair("\n\tpublic String getUserName() {\n\t\treturn surname;\n\t}\n");
            */

            String result = fileHandler.buildResult( );
            //logger.debug(result);

        } catch ( Exception e ) {
            e.printStackTrace( );
        }

    }

}