strongduanmu opened a new issue #10922:
URL: https://github.com/apache/shardingsphere/issues/10922
Hi community,
This issue is for #10887.
# Background
Currently `FederateStatementTest` and `FederatePrepareStatementTest` use
JUNIT to test SQL statements. In order to improve test coverage and code
elegance, we need to migrate the test scenarios of FederateStatementTest and
FederatePrepareStatementTest to `shardingsphere-integration-test`.
# Target
The goal of this issue is to migrate the
`SELECT_SUBQUEY_AGGREGATION_SQL_FOR_SHARDING_TABLE` statement to the
`shardingsphere-integration-test` module.
You can search for the `SELECT_SUBQUEY_AGGREGATION_SQL_FOR_SHARDING_TABLE`
keyword, and then you will find the test cases in `FederateStatementTest` and
`FederatePrepareStatementTest`.
FederateStatementTest:
```java
private static final String
SELECT_SUBQUEY_AGGREGATION_SQL_FOR_SHARDING_TABLE =
"SELECT (SELECT MAX(user_id) FROM t_order_federate_sharding)
max_user_id, order_id_sharding, status FROM t_order_federate_sharding WHERE
order_id_sharding > 1100";
@Test
public void
assertSubqueyAggregationForShardingTableWithFederateByExecuteQuery() throws
SQLException {
assertSubqueyAggregationForShardingTableWithFederate(true);
}
@Test
public void
assertSubqueyAggregationForShardingTableWithFederateByExecute() throws
SQLException {
assertSubqueyAggregationForShardingTableWithFederate(false);
}
private void assertSubqueyAggregationForShardingTableWithFederate(final
boolean executeQuery) throws SQLException {
Statement statement =
getShardingSphereDataSource().getConnection().createStatement();
ResultSet resultSet = getResultSet(statement,
SELECT_SUBQUEY_AGGREGATION_SQL_FOR_SHARDING_TABLE, executeQuery);
assertNotNull(resultSet);
assertTrue(resultSet.next());
assertThat(resultSet.getInt(1), is(11));
assertThat(resultSet.getInt(2), is(1101));
assertThat(resultSet.getString(3), is("init"));
assertNotNull(resultSet);
}
```
FederatePrepareStatementTest:
```java
private static final String
SELECT_SUBQUEY_AGGREGATION_SQL_FOR_SHARDING_TABLE =
"SELECT (SELECT MAX(user_id) FROM t_order_federate_sharding)
max_user_id, order_id_sharding, status FROM t_order_federate_sharding WHERE
order_id_sharding > ?";
@Test
public void
assertSubqueyAggregationForShardingTableWithFederateByExecuteQuery() throws
SQLException {
assertSubqueyAggregationForShardingTableWithFederate(true);
}
@Test
public void
assertSubqueyAggregationForShardingTableWithFederateByExecute() throws
SQLException {
assertSubqueyAggregationForShardingTableWithFederate(false);
}
private void assertSubqueyAggregationForShardingTableWithFederate(final
boolean executeQuery) throws SQLException {
PreparedStatement preparedStatement =
getShardingSphereDataSource().getConnection().prepareStatement(SELECT_SUBQUEY_AGGREGATION_SQL_FOR_SHARDING_TABLE);
preparedStatement.setInt(1, 1100);
ResultSet resultSet = getResultSet(preparedStatement, executeQuery);
assertNotNull(resultSet);
assertTrue(resultSet.next());
assertThat(resultSet.getInt(1), is(11));
assertThat(resultSet.getInt(2), is(1101));
assertThat(resultSet.getString(3), is("init"));
assertNotNull(resultSet);
}
```
# How to
In order to finish this task, you need to understand the
[documentation](https://shardingsphere.apache.org/document/current/en/features/test-engine/integration-test/)
of the integration test first, and PR #10913 also provides an example, which
you can refer to. BTW, if you have any questions, please leave a comment.
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