/*
 * 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.
 */

package org.apache.shardingsphere.sqlfederation.optimizer.converter.type;

import org.apache.calcite.sql.fun.SqlStdOperatorTable;
import org.apache.shardingsphere.sql.parser.statement.core.enums.CombineType;
import org.junit.jupiter.api.Test;

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

class CombineOperatorConverterTest {
    
    @Test
    void assertConvertSuccess() {
        assertThat(CombineOperatorConverter.convert(CombineType.UNION_ALL), is(SqlStdOperatorTable.UNION_ALL));
        assertThat(CombineOperatorConverter.convert(CombineType.UNION), is(SqlStdOperatorTable.UNION));
        assertThat(CombineOperatorConverter.convert(CombineType.INTERSECT_ALL), is(SqlStdOperatorTable.INTERSECT_ALL));
        assertThat(CombineOperatorConverter.convert(CombineType.INTERSECT), is(SqlStdOperatorTable.INTERSECT));
        assertThat(CombineOperatorConverter.convert(CombineType.EXCEPT_ALL), is(SqlStdOperatorTable.EXCEPT_ALL));
        assertThat(CombineOperatorConverter.convert(CombineType.EXCEPT), is(SqlStdOperatorTable.EXCEPT));
        assertThat(CombineOperatorConverter.convert(CombineType.MINUS_ALL), is(SqlStdOperatorTable.EXCEPT_ALL));
        assertThat(CombineOperatorConverter.convert(CombineType.MINUS), is(SqlStdOperatorTable.EXCEPT));
    }
}
