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TestClass.java
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TestClass.java
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package test;
import org.junit.Assert;
import org.junit.Test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.util.Map;
public class TestClass {
@Test
public void testEnvironment() throws Exception {
final Map<String, String> env = System.getenv();
Assert.assertTrue(env.containsKey("POSTGRES_HOST"));
Assert.assertTrue(env.containsKey("POSTGRES_PORT"));
Assert.assertTrue(env.containsKey("POSTGRES_DB_NAME"));
Assert.assertTrue(env.containsKey("POSTGRES_USER"));
Assert.assertTrue(env.containsKey("POSTGRES_PASSWORD"));
Assert.assertTrue(env.containsKey("POSTGRES_JDBC"));
}
@Test
public void testConnection() throws Exception {
final String jdbcUrl = System.getenv("POSTGRES_JDBC");
System.out.println("jdbcUrl: " + jdbcUrl);
try (final Connection conn = DriverManager.getConnection(jdbcUrl)) {
try (final Statement statement = conn.createStatement()) {
Assert.assertTrue(statement.execute("SELECT version();"));
Assert.assertTrue(statement.getResultSet().next());
System.out.println(statement.getResultSet().getString("version"));
}
try (final Statement statement = conn.createStatement()) {
statement.execute("CREATE TABLE films (code CHAR(5));");
statement.execute("INSERT INTO films VALUES ('movie');");
}
try (final Statement statement = conn.createStatement()) {
Assert.assertTrue(statement.execute("SELECT * FROM films;"));
Assert.assertTrue(statement.getResultSet().next());
Assert.assertEquals("movie", statement.getResultSet().getString("code"));
}
}
}
}