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/*
 * Copyright (c) 2017 Cisco 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 io.fd.honeycomb.data.impl;

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;

import com.google.common.collect.ImmutableSet;
import org.junit.Test;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateTip;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataValidationFailedException;
import org.opendaylight.yangtools.yang.data.api.schema.tree.TipProducingDataTree;
import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
import org.opendaylight.yangtools.yang.parser.spi.meta.ReactorException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ModificationDiffAugRewriteDeleteTest extends ModificationBaseTest {

    private static final Logger LOG = LoggerFactory.getLogger(ModificationDiffAugRewriteDeleteTest.class);

    @Test
    public void testWriteNonPresenceNonEmptyContainerAugWithLeaf()
            throws ReactorException, DataValidationFailedException {
        final TipProducingDataTree dataTree = prepareStateBeforeWithTopContainer(Builders.containerBuilder()
                .withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(TOP_CONTAINER_QNAME))
                .withChild(getNestedContWithLeafUnderAug("val"))
                .build());
        // now we have state with some data

        // just empty non presence container
        final DataTreeCandidateTip prepareModified = prepareStateAfterEmpty(dataTree);

        final ModificationDiff modificationDiff = getModificationDiff(prepareModified);
        // should detect one new entry
        LOG.debug(modificationDiff.toString());
        assertThat(modificationDiff.getUpdates().size(), is(1));
        // is delete
        assertCollectionContainsOnlyDeletes(modificationDiff);
        assertNodeModificationPresent(modificationDiff, ImmutableSet.of(AUG_LEAF));
    }

    @Test
    public void testWriteNonPresenceNonEmptyContainerAugWithList()
            throws ReactorException, DataValidationFailedException {
        final TipProducingDataTree dataTree = prepareStateBeforeWithTopContainer(Builders.containerBuilder()
                .withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(TOP_CONTAINER_QNAME))
                .withChild(getNestedContWithListUnderAug("val"))
                .build());
        // now we have state with some data

        // just empty non presence container
        final DataTreeCandidateTip prepareModified = prepareStateAfterEmpty(dataTree);

        final ModificationDiff modificationDiff = getModificationDiff(prepareModified);
        // should detect one new entry
        LOG.debug(modificationDiff.toString());
        assertThat(modificationDiff.getUpdates().size(), is(1));
        // is delete
        assertCollectionContainsOnlyDeletes(modificationDiff);
        assertNodeModificationPresent(modificationDiff, ImmutableSet.of(AUG_LIST));
    }

    @Test
    public void testWriteNonPresenceNonEmptyContainerAugWithNonPresenceContainer()
            throws ReactorException, DataValidationFailedException {
        final TipProducingDataTree dataTree = prepareStateBeforeWithTopContainer(Builders.containerBuilder()
                .withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(TOP_CONTAINER_QNAME))
                .withChild(getNestedContWithContUnderAug("val"))
                .build());
        // now we have state with some data

        // just empty non presence container
        final DataTreeCandidateTip prepareModified = prepareStateAfterEmpty(dataTree);

        final ModificationDiff modificationDiff = getModificationDiff(prepareModified);
        // should detect one new entry
        LOG.debug(modificationDiff.toString());
        assertThat(modificationDiff.getUpdates().size(), is(1));
        // is delete
        assertCollectionContainsOnlyDeletes(modificationDiff);
        assertNodeModificationPresent(modificationDiff, ImmutableSet.of(AUG_CONTAINER_LEAF));
    }

    @Test
    public void testWriteNonPresenceNonEmptyContainerAugWithLeafList()
            throws ReactorException, DataValidationFailedException {
        final TipProducingDataTree dataTree = prepareStateBeforeWithTopContainer(Builders.containerBuilder()
                .withNodeIdentifier(new YangInstanceIdentifier.NodeIdentifier(TOP_CONTAINER_QNAME))
                .withChild(getNestedContWithLeafListUnderAug("val"))
                .build());
        // now we have state with some data

        // just empty non presence container
        final DataTreeCandidateTip prepareModified = prepareStateAfterEmpty(dataTree);

        final ModificationDiff modificationDiff = getModificationDiff(prepareModified);
        // should detect one new entry
        LOG.debug(modificationDiff.toString());
        assertThat(modificationDiff.getUpdates().size(), is(1));
        // is delete
        assertCollectionContainsOnlyDeletes(modificationDiff);
        assertNodeModificationPresent(modificationDiff, ImmutableSet.of(AUG_LEAFLIST));
    }
}