ImplicitCollectionMapperTest.java

/*
 * Copyright (C) 2005 Joe Walnes.
 * Copyright (C) 2006, 2007 XStream Committers.
 * All rights reserved.
 *
 * The software in this package is published under the terms of the BSD
 * style license a copy of which has been included with this distribution in
 * the LICENSE.txt file.
 * 
 * Created on 16. February 2005 by Joe Walnes
 */
package com.thoughtworks.xstream.mapper;

import com.thoughtworks.acceptance.objects.Hardware;
import com.thoughtworks.acceptance.objects.OpenSourceSoftware;
import com.thoughtworks.acceptance.objects.SampleLists;
import com.thoughtworks.acceptance.objects.Software;

import junit.framework.TestCase;

public class ImplicitCollectionMapperTest extends TestCase {

    private ImplicitCollectionMapper implicitCollections = new ImplicitCollectionMapper(new DefaultMapper(null));

    public void testAllowsFieldsToBeMarkedAsImplicitCollectionsToBeAdded() {
        implicitCollections.add(SampleLists.class, "good", Object.class);
        assertNotNull(implicitCollections.getImplicitCollectionDefForFieldName(SampleLists.class, "good"));
        assertEquals("good", implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Object.class, null));
    }

    public void testDoesNotMarkFieldsAsImplicitCollectionByDefault() {
        assertNull(implicitCollections.getImplicitCollectionDefForFieldName(SampleLists.class, "good"));
        assertEquals(null, implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Object.class, null));
    }

    public void testAllowsFieldsToBeMarkedBasedOnItemType() {
        implicitCollections.add(SampleLists.class, "good", Software.class);
        implicitCollections.add(SampleLists.class, "bad", Hardware.class);
        assertNotNull(implicitCollections.getImplicitCollectionDefForFieldName(SampleLists.class, "bad"));
        assertNotNull(implicitCollections.getImplicitCollectionDefForFieldName(SampleLists.class, "good"));
        assertEquals("good", implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Software.class, null));
        assertEquals("bad", implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Hardware.class, null));
    }

    public void testIncludesSubClassesWhenCheckingItemType() {
        implicitCollections.add(SampleLists.class, "good", Software.class);
        assertEquals("good", implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, OpenSourceSoftware.class, null));
        assertEquals(null, implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Hardware.class, null));
    }

    public void testAllowsFieldsToBeMarkedAsNamedImplicitCollectionsToBeAdded() {
        implicitCollections.add(SampleLists.class, "good", "good-item", Object.class);
        implicitCollections.add(SampleLists.class, "bad", Object.class);
        Mapper.ImplicitCollectionMapping mappingGood = implicitCollections.getImplicitCollectionDefForFieldName(SampleLists.class, "good");
        assertNotNull(mappingGood);
        assertEquals("good-item", mappingGood.getItemFieldName());
        assertEquals(Object.class, mappingGood.getItemType());
        assertEquals("good", mappingGood.getFieldName());

        Mapper.ImplicitCollectionMapping mappingBad = implicitCollections.getImplicitCollectionDefForFieldName(SampleLists.class, "bad");
        assertNotNull(mappingBad);
        assertNull(mappingBad.getItemFieldName());

        assertEquals("good", implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Object.class, "good-item"));
        assertEquals("bad", implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Object.class, null));
    }

    public void testAllowsFieldsToBeMarkedBasedOnItemFieldName() {
        implicitCollections.add(SampleLists.class, "good", "good-item", Object.class);
        implicitCollections.add(SampleLists.class, "bad", "bad-item", Object.class);
        Mapper.ImplicitCollectionMapping mappingGood = implicitCollections.getImplicitCollectionDefForFieldName(SampleLists.class, "good");
        assertNotNull(mappingGood);
        assertEquals("good-item", mappingGood.getItemFieldName());
        assertEquals(Object.class, mappingGood.getItemType());
        assertEquals("good", mappingGood.getFieldName());

        Mapper.ImplicitCollectionMapping mappingBad = implicitCollections.getImplicitCollectionDefForFieldName(SampleLists.class, "bad");
        assertNotNull(mappingBad);
        assertEquals("bad-item", mappingBad.getItemFieldName());
        assertEquals(Object.class, mappingBad.getItemType());
        assertEquals("bad", mappingBad.getFieldName());

        assertEquals("good", implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Object.class, "good-item"));
        assertEquals("bad", implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Object.class, "bad-item"));
    }

    public void testIncludesSubClassesWhenCheckingItemTypeForNamedImplicitCollections() {
        implicitCollections.add(SampleLists.class, "good", "good-item", Software.class);
        assertEquals("good", implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, OpenSourceSoftware.class, "good-item"));
        assertEquals(null, implicitCollections.getFieldNameForItemTypeAndName(SampleLists.class, Hardware.class, null));
    }

    public void testGetItemTypeForItemFieldName() {
        implicitCollections.add(SampleLists.class, "good", "good-item", Software.class);
        implicitCollections.add(SampleLists.class, "bad", "bad-item", Software.class);

        assertEquals(Software.class, implicitCollections.getItemTypeForItemFieldName(SampleLists.class, "good-item"));
    }
}