/*
 * 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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package org.apache.shardingsphere.sharding.algorithm.audit;

import org.apache.shardingsphere.infra.binder.context.statement.SQLStatementContext;
import org.apache.shardingsphere.infra.binder.context.type.TableAvailable;
import org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase;
import org.apache.shardingsphere.infra.metadata.database.rule.RuleMetaData;
import org.apache.shardingsphere.infra.spi.type.typed.TypedSPILoader;
import org.apache.shardingsphere.sharding.exception.audit.DMLWithoutShardingKeyException;
import org.apache.shardingsphere.sharding.rule.ShardingRule;
import org.apache.shardingsphere.sharding.spi.ShardingAuditAlgorithm;
import org.apache.shardingsphere.sql.parser.statement.core.statement.ddl.DDLStatement;
import org.apache.shardingsphere.sql.parser.statement.core.statement.dml.DMLStatement;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import java.util.Collections;

import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.mockito.Mockito.RETURNS_DEEP_STUBS;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
import static org.mockito.Mockito.withSettings;

class DMLShardingConditionsShardingAuditAlgorithmTest {
    
    private SQLStatementContext sqlStatementContext;
    
    private ShardingSphereDatabase database;
    
    private ShardingRule rule;
    
    private ShardingAuditAlgorithm shardingAuditAlgorithm;
    
    @BeforeEach
    void setUp() {
        shardingAuditAlgorithm = TypedSPILoader.getService(ShardingAuditAlgorithm.class, "DML_SHARDING_CONDITIONS");
        sqlStatementContext = mock(SQLStatementContext.class, withSettings().extraInterfaces(TableAvailable.class).defaultAnswer(RETURNS_DEEP_STUBS));
        database = mock(ShardingSphereDatabase.class, RETURNS_DEEP_STUBS);
        rule = mock(ShardingRule.class);
        when(((TableAvailable) sqlStatementContext).getTablesContext().getTableNames()).thenReturn(Collections.singletonList("t_order"));
    }
    
    @Test
    void assertNotDMLStatementCheck() {
        when(sqlStatementContext.getSqlStatement()).thenReturn(mock(DDLStatement.class));
        shardingAuditAlgorithm.check(sqlStatementContext, Collections.emptyList(), mock(RuleMetaData.class), database);
        verify(database, times(0)).getRuleMetaData();
    }
    
    @Test
    void assertEmptyShardingConditionsCheck() {
        when(sqlStatementContext.getSqlStatement()).thenReturn(mock(DMLStatement.class));
        when(database.getRuleMetaData()).thenReturn(new RuleMetaData(Collections.singletonList(rule)));
        when(rule.isShardingTable("t_order")).thenReturn(true);
        assertThrows(DMLWithoutShardingKeyException.class, () -> shardingAuditAlgorithm.check(sqlStatementContext, Collections.emptyList(), mock(RuleMetaData.class), database));
    }
}
