/*
 * 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.proxy.backend.opengauss.handler.admin.executor;

import org.apache.shardingsphere.infra.executor.sql.execute.result.query.QueryResultMetaData;
import org.apache.shardingsphere.infra.merge.result.MergedResult;
import org.junit.jupiter.api.Test;

import java.sql.SQLException;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;

class OpenGaussSelectVersionExecutorTest {
    
    @Test
    void assertAccept() {
        assertTrue(OpenGaussSelectVersionExecutor.accept("VERSION()"));
        assertTrue(OpenGaussSelectVersionExecutor.accept("version()"));
    }
    
    @Test
    void assertExecute() throws SQLException {
        OpenGaussSelectVersionExecutor executor = new OpenGaussSelectVersionExecutor();
        executor.execute(mock(), mock());
        QueryResultMetaData actualMetaData = executor.getQueryResultMetaData();
        assertThat(actualMetaData.getColumnCount(), is(1));
        assertThat(actualMetaData.getColumnLabel(1), is("version"));
        MergedResult actualResult = executor.getMergedResult();
        assertTrue(actualResult.next());
        assertNotNull(actualResult.getValue(1, String.class));
        assertFalse(actualResult.next());
    }
}
