/*
 * 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.infra.binder.engine.segment.dml.projection.type;

import com.cedarsoftware.util.CaseInsensitiveMap.CaseInsensitiveString;
import com.google.common.collect.LinkedHashMultimap;
import com.google.common.collect.Multimap;
import org.apache.shardingsphere.database.connector.core.type.DatabaseType;
import org.apache.shardingsphere.infra.binder.engine.segment.dml.expression.type.SubquerySegmentBinder;
import org.apache.shardingsphere.infra.binder.engine.segment.dml.from.context.TableSegmentBinderContext;
import org.apache.shardingsphere.infra.binder.engine.statement.SQLStatementBinderContext;
import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.expr.subquery.SubquerySegment;
import org.apache.shardingsphere.sql.parser.statement.core.segment.dml.item.SubqueryProjectionSegment;
import org.apache.shardingsphere.sql.parser.statement.core.segment.generic.AliasSegment;
import org.apache.shardingsphere.sql.parser.statement.core.statement.type.dml.SelectStatement;
import org.apache.shardingsphere.sql.parser.statement.core.value.identifier.IdentifierValue;
import org.apache.shardingsphere.test.infra.framework.extension.mock.AutoMockExtension;
import org.apache.shardingsphere.test.infra.framework.extension.mock.StaticMockSettings;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;

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

@ExtendWith(AutoMockExtension.class)
@StaticMockSettings(SubquerySegmentBinder.class)
class SubqueryProjectionSegmentBinderTest {
    
    @Test
    void assertBindWithAlias() {
        SubquerySegment subquerySegment = new SubquerySegment(0, 0, new SelectStatement(mock(DatabaseType.class)), "SELECT 1");
        SubqueryProjectionSegment projectionSegment = new SubqueryProjectionSegment(subquerySegment, "SELECT 1");
        AliasSegment aliasSegment = new AliasSegment(0, 0, new IdentifierValue("subquery_alias"));
        projectionSegment.setAlias(aliasSegment);
        SQLStatementBinderContext binderContext = mock(SQLStatementBinderContext.class);
        Multimap<CaseInsensitiveString, TableSegmentBinderContext> tableBinderContexts = LinkedHashMultimap.create();
        SubquerySegment boundSubquerySegment = new SubquerySegment(0, 0, new SelectStatement(mock(DatabaseType.class)), "SELECT 1");
        when(SubquerySegmentBinder.bind(subquerySegment, binderContext, tableBinderContexts)).thenReturn(boundSubquerySegment);
        SubqueryProjectionSegment actual = SubqueryProjectionSegmentBinder.bind(projectionSegment, binderContext, tableBinderContexts);
        assertThat(actual.getSubquery(), is(boundSubquerySegment));
        assertTrue(actual.getAlias().isPresent());
        assertThat(actual.getAlias().get().getValue(), is("subquery_alias"));
        assertTrue(actual.getAliasSegment().isPresent());
        assertThat(actual.getAliasSegment().get(), is(aliasSegment));
    }
}
