/*
 * Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
 * license agreements.  See the NOTICE file distributed with this work for
 * additional information regarding copyright ownership.  Crate 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.
 *
 * However, if you have executed another commercial license agreement
 * with Crate these terms will supersede the license and you may use the
 * software solely pursuant to the terms of the relevant commercial agreement.
 */

package io.crate.integrationtests;

import io.crate.action.sql.SQLActionException;
import io.crate.testing.UseJdbc;
import org.junit.Test;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import static org.hamcrest.Matchers.is;

@UseJdbc
public class SysClusterTest extends SQLTransportIntegrationTest {

    @Test
    public void testSysCluster() throws Exception {
        execute("select id");
        assertThat(response.rowCount(), is(1L));
        assertThat(((String) response.rows()[0][0]).length(), is(36)); // looks like a uuid
    }

    public void testSysClusterMasterNode() throws Exception {
        execute("select id from sys.nodes");
        List<String> nodes = new ArrayList<>();
        for (Object[] nodeId : response.rows()) {
            nodes.add((String) nodeId[0]);
        }

        execute("select master_node from sys.cluster");
        assertThat(response.rowCount(), is(1L));
        String node = (String) response.rows()[0][0];
        assertTrue(nodes.contains(node));
    }

    @Test
    public void testExplainSysCluster() throws Exception {
        execute("explain select * from sys.cluster limit 2"); // using limit to test projection serialization as well
        assertThat(response.rowCount(), is(1L));
        Map<String, Object> map = (Map<String, Object>) response.rows()[0][0];
        assertThat(map.get("planType"), is("Collect"));
    }

    @Test
    public void testScalarEvaluatesInErrorOnSysCluster() throws Exception {
        expectedException.expect(SQLActionException.class);
        expectedException.expectMessage(" / by zero");
        execute("select 1/0 from sys.cluster");
    }
}