/*
 * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.mdsal.binding.dom.codec.impl;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.util.Collections;
import java.util.Map.Entry;
import org.junit.Test;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.augment.rev140709.RpcComplexUsesAugment;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.augment.rev140709.RpcComplexUsesAugmentBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.augment.rev140709.TreeComplexUsesAugment;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.augment.rev140709.TreeLeafOnlyAugment;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.augment.rev140709.complex.from.grouping.ContainerWithUsesBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.augment.rev140709.top.top.level.list.choice.in.list.EmptyLeaf;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.augment.rev140709.top.top.level.list.choice.in.list.EmptyLeafBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.binding.rev140701.Top;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.binding.rev140701.two.level.list.TopLevelList;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.binding.rev140701.two.level.list.TopLevelListBuilder;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.binding.rev140701.two.level.list.TopLevelListKey;
import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.mdsal.test.binding.rev140701.two.level.list.top.level.list.ChoiceInList;
import org.opendaylight.yangtools.yang.binding.DataObject;
import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
import org.opendaylight.yangtools.yang.common.Empty;
import org.opendaylight.yangtools.yang.common.QName;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;

public class EmptyLeafTest extends AbstractBindingCodecTest {

    private static final TopLevelListKey TOP_FOO_KEY = new TopLevelListKey("foo");
    private static final InstanceIdentifier<TopLevelList> BA_TOP_LEVEL_LIST = InstanceIdentifier.builder(Top.class)
            .child(TopLevelList.class, TOP_FOO_KEY).build();
    private static final InstanceIdentifier<TreeLeafOnlyAugment> BA_TREE_LEAF_ONLY = BA_TOP_LEVEL_LIST
            .augmentation(TreeLeafOnlyAugment.class);
    private static final InstanceIdentifier<TreeComplexUsesAugment> BA_TREE_COMPLEX_USES = BA_TOP_LEVEL_LIST
            .augmentation(TreeComplexUsesAugment.class);
    private static final QName SIMPLE_VALUE_QNAME = QName.create(TreeComplexUsesAugment.QNAME, "simple-value");

    @Test
    public void testCaseWithEmptyLeafType() {
        final TopLevelList withEmptyCase = new TopLevelListBuilder()
            .withKey(TOP_FOO_KEY)
            .setChoiceInList(new EmptyLeafBuilder().setEmptyType(Empty.value()).build())
            .build();
        final Entry<YangInstanceIdentifier, NormalizedNode> dom = codecContext.toNormalizedNode(BA_TOP_LEVEL_LIST,
            withEmptyCase);
        final Entry<InstanceIdentifier<?>, DataObject> readed = codecContext.fromNormalizedNode(dom.getKey(),
            dom.getValue());
        final ChoiceInList list = ((TopLevelList) readed.getValue()).getChoiceInList();
        assertTrue(list instanceof EmptyLeaf);
        assertNotNull(((EmptyLeaf) list).getEmptyType());
    }

    // FIXME: either remove this method or take advantage of it
    private static RpcComplexUsesAugment createComplexData() {
        return new RpcComplexUsesAugmentBuilder()
                .setContainerWithUses(new ContainerWithUsesBuilder().setLeafFromGrouping("foo").build())
                .setListViaUses(Collections.emptyMap())
                .build();
    }
}