try fix oracle connection issue

ktorm-support-oracle/src/test/kotlin/org/ktorm/support/oracle/BaseOracleTest.kt

@@ -8,8 +8,12 @@ import java.sql.DriverManager
 import kotlin.concurrent.thread
 
 abstract class BaseOracleTest : BaseTest() {
+ lateinit var connection: Connection
 
  override fun init() {
+ Class.forName(driverClassName)
+ connection = DriverManager.getConnection(jdbcUrl, username, password)
+
  database = Database.connect(alwaysQuoteIdentifiers = true) {
  object : Connection by connection {
  override fun close() {
@@ -23,11 +27,10 @@ abstract class BaseOracleTest : BaseTest() {
 
  override fun destroy() {
  execSqlScript("drop-oracle-data.sql")
+ connection.close()
  }
 
  companion object : OracleContainer("zerda/oracle-database:11.2.0.2-xe") {
- lateinit var connection: Connection
-
  init {
  // At least 1 GB memory is required by Oracle.
  withCreateContainerCmdModifier { cmd -> cmd.hostConfig?.withShmSize((1 * 1024 * 1024 * 1024).toLong()) }
@@ -36,17 +39,5 @@ abstract class BaseOracleTest : BaseTest() {
  // Stop the container when the process exits.
  Runtime.getRuntime().addShutdownHook(thread(start = false) { stop() })
  }
-
- override fun start() {
- super.start()
-
- Class.forName(driverClassName)
- connection = DriverManager.getConnection(jdbcUrl, username, password)
- }
-
- override fun stop() {
- connection.close()
- super.stop()
- }
  }
 }