VariableInterpolationTest.java

/*
 * Copyright 2016 JBoss, by Red Hat, 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.
 */

package org.guvnor.ala.util;

import java.util.HashMap;

import org.apache.commons.collections.map.HashedMap;
import org.junit.Test;

import static org.junit.Assert.*;

public class VariableInterpolationTest {

    @Test
    public void basicTest() {
        final Test1 object = new Test1() {
        };
        final Test1 newObject = VariableInterpolation.interpolate( new HashMap<String, Object>() {{
            put( "input", new HashMap<String, String>() {{
                put( "value1", "myvalue1" );
                put( "value2", "myvalue2" );
            }} );
        }}, object );

        assertEquals( "myvalue1", newObject.getValue1() );
        assertEquals( "myvalue2", newObject.getValue2() );
        assertEquals( "myvalue1", newObject.getValue3() );
    }


    @Test
    public void missingContentTest() {
        final Test1 object = new Test1() {
        };
        final Test1 newObject = VariableInterpolation.interpolate( new HashMap<String, Object>() {{
            put( "input", new HashMap<String, String>() {{
                put( "value2", "myvalue2" );
            }} );
        }}, object );

        assertEquals( "", newObject.getValue1() );
        assertEquals( "myvalue2", newObject.getValue2() );
        assertEquals( "", newObject.getValue3() );
    }

    @Test
    public void testPreserveImplementedInterfaces() {
        Object object = new Test1Class();
        Object newObject = VariableInterpolation.interpolate( new HashMap<>(), object );
        assertTrue( newObject instanceof Test1 );

        object = new Test2Class();
        newObject = VariableInterpolation.interpolate( new HashMap<>(), object );
        assertTrue( newObject instanceof Test1 );

        object = new Test3Class();
        newObject = VariableInterpolation.interpolate( new HashMap<>(), object );
        assertTrue( newObject instanceof Test1 );
    }

    public interface Test1 {

        default String getValue1() {
            return "${input.value1}";
        }

        default String getValue2() {
            return "${input.value2}";
        }

        default String getValue3() {
            return "${input.value1}";
        }
    }

    public class Test1Class implements Test1 {

    }

    public class Test2Class extends Test1Class {

    }

    public class Test3Class extends Test2Class {

    }

}