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Add more test cases on ShardingDALResultMerger (#33715)
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@terrymanu
terrymanu authored Nov 18, 2024
1 parent b7bcba9 commit 4f87279
Showing 1 changed file with 31 additions and 65 deletions.
96 changes: 31 additions & 65 deletions ...c/test/java/org/apache/shardingsphere/sharding/merge/dal/ShardingDALResultMergerTest.java
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package org.apache.shardingsphere.sharding.merge.dal;

import org.apache.shardingsphere.infra.binder.context.segment.table.TablesContext;
import org.apache.shardingsphere.infra.binder.context.statement.SQLStatementContext;
import org.apache.shardingsphere.infra.binder.context.type.TableAvailable;
import org.apache.shardingsphere.infra.database.core.DefaultDatabase;
import org.apache.shardingsphere.infra.database.core.type.DatabaseType;
import org.apache.shardingsphere.infra.executor.sql.execute.result.query.QueryResult;
import org.apache.shardingsphere.infra.merge.result.impl.local.LocalDataMergedResult;
import org.apache.shardingsphere.infra.merge.result.impl.transparent.TransparentMergedResult;
import org.apache.shardingsphere.infra.metadata.database.ShardingSphereDatabase;
import org.apache.shardingsphere.infra.session.connection.ConnectionContext;
import org.apache.shardingsphere.infra.spi.type.typed.TypedSPILoader;
import org.apache.shardingsphere.sharding.merge.dal.show.LogicTablesMergedResult;
import org.apache.shardingsphere.sharding.merge.dal.show.ShowCreateTableMergedResult;
import org.apache.shardingsphere.sharding.merge.dal.show.ShowIndexMergedResult;
import org.apache.shardingsphere.sharding.merge.dal.show.ShowTableStatusMergedResult;
import org.apache.shardingsphere.sharding.rule.ShardingRule;
import org.apache.shardingsphere.sql.parser.statement.core.statement.dal.DALStatement;
import org.apache.shardingsphere.sql.parser.statement.mysql.dal.MySQLExplainStatement;
import org.apache.shardingsphere.sql.parser.statement.mysql.dal.MySQLShowCreateTableStatement;
import org.apache.shardingsphere.sql.parser.statement.mysql.dal.MySQLShowDatabasesStatement;
import org.apache.shardingsphere.sql.parser.statement.mysql.dal.MySQLShowIndexStatement;
import org.apache.shardingsphere.sql.parser.statement.mysql.dal.MySQLShowOtherStatement;
import org.apache.shardingsphere.sql.parser.statement.mysql.dal.MySQLShowTableStatusStatement;
import org.apache.shardingsphere.sql.parser.statement.mysql.dal.MySQLShowTablesStatement;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.junit.jupiter.MockitoExtension;

import java.sql.SQLException;
import java.util.LinkedList;
import java.util.Collections;
import java.util.List;
import java.util.Optional;

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import static org.mockito.Mockito.when;
import static org.mockito.Mockito.withSettings;

@ExtendWith(MockitoExtension.class)
class ShardingDALResultMergerTest {

private final List<QueryResult> queryResults = new LinkedList<>();
private final DatabaseType databaseType = TypedSPILoader.getService(DatabaseType.class, "FIXTURE");

@BeforeEach
void setUp() {
queryResults.add(mock(QueryResult.class));
}
private final ShardingDALResultMerger resultMerger = new ShardingDALResultMerger("foo_db", mock());

private final List<QueryResult> queryResults = Collections.singletonList(mock());

@Test
void assertMergeForShowDatabasesStatement() throws SQLException {
DALStatement dalStatement = new MySQLShowDatabasesStatement();
SQLStatementContext sqlStatementContext = mockSQLStatementContext(dalStatement);
ShardingDALResultMerger resultMerger = new ShardingDALResultMerger(DefaultDatabase.LOGIC_NAME, null);
ShardingSphereDatabase database = mock(ShardingSphereDatabase.class, RETURNS_DEEP_STUBS);
when(database.getName()).thenReturn(DefaultDatabase.LOGIC_NAME);
assertThat(resultMerger.merge(queryResults, sqlStatementContext, database, mock(ConnectionContext.class)), instanceOf(LocalDataMergedResult.class));
SQLStatementContext sqlStatementContext = mockSQLStatementContext(new MySQLShowDatabasesStatement());
assertThat(resultMerger.merge(queryResults, sqlStatementContext, mock(), mock()), instanceOf(LocalDataMergedResult.class));
}

@Test
void assertMergeForShowShowTablesStatement() throws SQLException {
DALStatement dalStatement = new MySQLShowTablesStatement();
SQLStatementContext sqlStatementContext = mockSQLStatementContext(dalStatement);
ShardingDALResultMerger resultMerger = new ShardingDALResultMerger(DefaultDatabase.LOGIC_NAME, null);
ShardingSphereDatabase database = mock(ShardingSphereDatabase.class, RETURNS_DEEP_STUBS);
when(database.getName()).thenReturn(DefaultDatabase.LOGIC_NAME);
assertThat(resultMerger.merge(queryResults, sqlStatementContext, database, mock(ConnectionContext.class)), instanceOf(LogicTablesMergedResult.class));
SQLStatementContext sqlStatementContext = mockSQLStatementContext(new MySQLShowTablesStatement());
assertThat(resultMerger.merge(queryResults, sqlStatementContext, mock(), mock()), instanceOf(LogicTablesMergedResult.class));
}

@Test
void assertMergeForShowCreateTableStatement() throws SQLException {
DALStatement dalStatement = new MySQLShowCreateTableStatement();
SQLStatementContext sqlStatementContext = mockSQLStatementContext(dalStatement);
ShardingDALResultMerger resultMerger = new ShardingDALResultMerger(DefaultDatabase.LOGIC_NAME, null);
ShardingSphereDatabase database = mock(ShardingSphereDatabase.class, RETURNS_DEEP_STUBS);
when(database.getName()).thenReturn(DefaultDatabase.LOGIC_NAME);
assertThat(resultMerger.merge(queryResults, sqlStatementContext, database, mock(ConnectionContext.class)), instanceOf(ShowCreateTableMergedResult.class));
void assertMergeForShowTableStatusStatement() throws SQLException {
SQLStatementContext sqlStatementContext = mockSQLStatementContext(new MySQLShowTableStatusStatement());
assertThat(resultMerger.merge(queryResults, sqlStatementContext, mock(), mock()), instanceOf(ShowTableStatusMergedResult.class));
}

@Test
void assertMergeForShowOtherStatement() throws SQLException {
DALStatement dalStatement = new MySQLShowOtherStatement();
SQLStatementContext sqlStatementContext = mockSQLStatementContext(dalStatement);
ShardingDALResultMerger resultMerger = new ShardingDALResultMerger(DefaultDatabase.LOGIC_NAME, null);
ShardingSphereDatabase database = mock(ShardingSphereDatabase.class, RETURNS_DEEP_STUBS);
when(database.getName()).thenReturn(DefaultDatabase.LOGIC_NAME);
assertThat(resultMerger.merge(queryResults, sqlStatementContext, database, mock(ConnectionContext.class)), instanceOf(TransparentMergedResult.class));
void assertMergeForShowIndexStatement() throws SQLException {
SQLStatementContext sqlStatementContext = mockSQLStatementContext(new MySQLShowIndexStatement());
assertThat(resultMerger.merge(queryResults, sqlStatementContext, mock(), mock()), instanceOf(ShowIndexMergedResult.class));
}

@Test
void assertMergeForDescribeStatement() throws SQLException {
DALStatement dalStatement = new MySQLExplainStatement();
SQLStatementContext sqlStatementContext = mockSQLStatementContext(dalStatement);
ShardingDALResultMerger resultMerger = new ShardingDALResultMerger(DefaultDatabase.LOGIC_NAME, mock(ShardingRule.class));
ShardingSphereDatabase database = mock(ShardingSphereDatabase.class, RETURNS_DEEP_STUBS);
when(database.getName()).thenReturn(DefaultDatabase.LOGIC_NAME);
assertThat(resultMerger.merge(queryResults, sqlStatementContext, database, mock(ConnectionContext.class)), instanceOf(TransparentMergedResult.class));
void assertMergeForShowCreateTableStatement() throws SQLException {
SQLStatementContext sqlStatementContext = mockSQLStatementContext(new MySQLShowCreateTableStatement());
assertThat(resultMerger.merge(queryResults, sqlStatementContext, mock(), mock()), instanceOf(ShowCreateTableMergedResult.class));
}

@Test
void assertMergeForShowIndexStatement() throws SQLException {
DALStatement dalStatement = new MySQLShowIndexStatement();
SQLStatementContext sqlStatementContext = mockSQLStatementContext(dalStatement);
ShardingDALResultMerger resultMerger = new ShardingDALResultMerger(DefaultDatabase.LOGIC_NAME, mock(ShardingRule.class));
ShardingSphereDatabase database = mock(ShardingSphereDatabase.class, RETURNS_DEEP_STUBS);
when(database.getName()).thenReturn(DefaultDatabase.LOGIC_NAME);
assertThat(resultMerger.merge(queryResults, sqlStatementContext, database, mock(ConnectionContext.class)), instanceOf(ShowIndexMergedResult.class));
void assertMergeForDescribeStatement() throws SQLException {
SQLStatementContext sqlStatementContext = mockSQLStatementContext(new MySQLExplainStatement());
assertThat(resultMerger.merge(queryResults, sqlStatementContext, mock(), mock()), instanceOf(TransparentMergedResult.class));
}

@Test
void assertMergeForShowTableStatusStatement() throws SQLException {
DALStatement dalStatement = new MySQLShowTableStatusStatement();
SQLStatementContext sqlStatementContext = mockSQLStatementContext(dalStatement);
ShardingDALResultMerger resultMerger = new ShardingDALResultMerger(DefaultDatabase.LOGIC_NAME, mock(ShardingRule.class));
ShardingSphereDatabase database = mock(ShardingSphereDatabase.class, RETURNS_DEEP_STUBS);
when(database.getName()).thenReturn(DefaultDatabase.LOGIC_NAME);
assertThat(resultMerger.merge(queryResults, sqlStatementContext, database, mock(ConnectionContext.class)), instanceOf(ShowTableStatusMergedResult.class));
void assertMergeWithNotTableAvailable() throws SQLException {
SQLStatementContext sqlStatementContext = mock(SQLStatementContext.class);
when(sqlStatementContext.getDatabaseType()).thenReturn(databaseType);
assertThat(resultMerger.merge(queryResults, sqlStatementContext, mock(), mock()), instanceOf(TransparentMergedResult.class));
}

private SQLStatementContext mockSQLStatementContext(final DALStatement dalStatement) {
SQLStatementContext result = mock(SQLStatementContext.class, withSettings().extraInterfaces(TableAvailable.class));
SQLStatementContext result = mock(SQLStatementContext.class, withSettings().extraInterfaces(TableAvailable.class).defaultAnswer(RETURNS_DEEP_STUBS));
when(result.getSqlStatement()).thenReturn(dalStatement);
TablesContext tablesContext = mock(TablesContext.class);
when(((TableAvailable) result).getTablesContext()).thenReturn(tablesContext);
when(tablesContext.getSchemaName()).thenReturn(Optional.empty());
when(result.getDatabaseType()).thenReturn(TypedSPILoader.getService(DatabaseType.class, "FIXTURE"));
when(((TableAvailable) result).getTablesContext().getSchemaName()).thenReturn(Optional.empty());
when(result.getDatabaseType()).thenReturn(databaseType);
return result;
}
}

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