- Add H2 database dependency in your project. You can add the following dependency in your
pom.xml
file:
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.200</version>
</dependency>
- Create a new H2 database instance. You can create a new in-memory H2 database instance in your test setup method. For example:
import org.h2.jdbcx.JdbcDataSource;
public class MyTest {
private JdbcDataSource dataSource;
@Before
public void setUp() {
dataSource = new JdbcDataSource();
dataSource.setURL("jdbc:h2:mem:test");
dataSource.setUser("sa");
dataSource.setPassword("password");
}
// ... your test cases ...
}
- Use the database in your tests. You can use the H2 database instance to execute SQL queries in your tests. For example:
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class MyTest {
private JdbcDataSource dataSource;
// ...
@Test
public void testInsertAndSelect() throws SQLException {
// create a connection to the database
Connection conn = dataSource.getConnection();
// insert a new row into the table
PreparedStatement stmt = conn.prepareStatement("INSERT INTO my_table (name, age) VALUES (?, ?)");
stmt.setString(1, "John");
stmt.setInt(2, 30);
stmt.executeUpdate();
// select the row from the table
stmt = conn.prepareStatement("SELECT name, age FROM my_table WHERE name = ?");
stmt.setString(1, "John");
ResultSet rs = stmt.executeQuery();
// assert that the row exists and has the expected values
assertTrue(rs.next());
assertEquals("John", rs.getString("name"));
assertEquals(30, rs.getInt("age"));
// close the resources
rs.close();
stmt.close();
conn.close();
}
}
Note that you may need to configure your Netty application to use the same H2 database instance as your tests. You can pass the dataSource
instance to your Netty application, or you can use a configuration file or environment variables to specify the database connection details.
- To use H2 database in Netty function tests and automatically add DDL, you can use the
jdbc:h2:mem:test;INIT=
connection string to specify the SQL statements to be executed when the database is initialized. - For example, in your test setup method, you can create the H2 database instance with the
INIT
parameter like this:
import org.h2.jdbcx.JdbcDataSource;
public class MyTest {
private JdbcDataSource dataSource;
@Before
public void setUp() {
dataSource = new JdbcDataSource();
dataSource.setURL("jdbc:h2:mem:test;INIT=RUNSCRIPT FROM 'classpath:init.sql'");
dataSource.setUser("sa");
dataSource.setPassword("password");
}
// ... your test cases ...
}
In this example, the RUNSCRIPT FROM
statement in the INIT
parameter specifies that the init.sql
file in the classpath should be executed when the database is initialized. The init.sql
file can contain your DDL statements to create tables and indexes, for example:
CREATE TABLE my_table ( id INT PRIMARY KEY, name VARCHAR(100), age INT );
With this setup, when the dataSource.getConnection()
method is called in your test cases, the H2 database will be initialized and the DDL statements in the init.sql
file will be executed automatically.文章来源:https://www.toymoban.com/news/detail-412942.html
You can then use the H2 database instance to execute SQL queries in your tests, as shown in the previous example.文章来源地址https://www.toymoban.com/news/detail-412942.html
到了这里,关于use h2 database in netty function test的文章就介绍完了。如果您还想了解更多内容,请在右上角搜索TOY模板网以前的文章或继续浏览下面的相关文章,希望大家以后多多支持TOY模板网!