package org.apache.cassandra.service;
/*
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
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import java.util.Arrays;

import org.apache.cassandra.SchemaLoader;
import org.junit.Test;

import org.apache.cassandra.db.ColumnFamily;

import static org.apache.cassandra.db.TableTest.assertColumns;
import static org.apache.cassandra.Util.column;
import static junit.framework.Assert.assertNull;

public class RowResolverTest extends SchemaLoader
{
    @Test
    public void testResolveSupersetNewer()
    {
        ColumnFamily cf1 = ColumnFamily.create("Keyspace1", "Standard1");
        cf1.addColumn(column("c1", "v1", 0));

        ColumnFamily cf2 = ColumnFamily.create("Keyspace1", "Standard1");
        cf2.addColumn(column("c1", "v2", 1));

        ColumnFamily resolved = RowRepairResolver.resolveSuperset(Arrays.asList(cf1, cf2));
        assertColumns(resolved, "c1");
        assertColumns(ColumnFamily.diff(cf1, resolved), "c1");
        assertNull(ColumnFamily.diff(cf2, resolved));
    }

    @Test
    public void testResolveSupersetDisjoint()
    {
        ColumnFamily cf1 = ColumnFamily.create("Keyspace1", "Standard1");
        cf1.addColumn(column("c1", "v1", 0));

        ColumnFamily cf2 = ColumnFamily.create("Keyspace1", "Standard1");
        cf2.addColumn(column("c2", "v2", 1));

        ColumnFamily resolved = RowRepairResolver.resolveSuperset(Arrays.asList(cf1, cf2));
        assertColumns(resolved, "c1", "c2");
        assertColumns(ColumnFamily.diff(cf1, resolved), "c2");
        assertColumns(ColumnFamily.diff(cf2, resolved), "c1");
    }

    @Test
    public void testResolveSupersetNullOne()
    {
        ColumnFamily cf2 = ColumnFamily.create("Keyspace1", "Standard1");
        cf2.addColumn(column("c2", "v2", 1));

        ColumnFamily resolved = RowRepairResolver.resolveSuperset(Arrays.asList(null, cf2));
        assertColumns(resolved, "c2");
        assertColumns(ColumnFamily.diff(null, resolved), "c2");
        assertNull(ColumnFamily.diff(cf2, resolved));
    }

    @Test
    public void testResolveSupersetNullTwo()
    {
        ColumnFamily cf1 = ColumnFamily.create("Keyspace1", "Standard1");
        cf1.addColumn(column("c1", "v1", 0));

        ColumnFamily resolved = RowRepairResolver.resolveSuperset(Arrays.asList(cf1, null));
        assertColumns(resolved, "c1");
        assertNull(ColumnFamily.diff(cf1, resolved));
        assertColumns(ColumnFamily.diff(null, resolved), "c1");
    }

    @Test
    public void testResolveSupersetNullBoth()
    {
        assertNull(RowRepairResolver.resolveSuperset(Arrays.<ColumnFamily>asList(null, null)));
    }
}