Mapped port can only be obtained after the container is started

[mithunatri]

Hi,

I am trying to use PostgreSQLContainer to perform some integration tests. To try out the library, I am replicating the examples provided in the readme, but I keep running into this error.

Mapped port can only be obtained after the container is started
java.lang.IllegalStateException: Mapped port can only be obtained after the container is started
	at org.testcontainers.shaded.com.google.common.base.Preconditions.checkState(Preconditions.java:174)
	at org.testcontainers.containers.ContainerState.getMappedPort(ContainerState.java:125)
	at org.testcontainers.containers.PostgreSQLContainer.getJdbcUrl(PostgreSQLContainer.java:62)
	at com.dimafeng.testcontainers.JdbcDatabaseContainer$class.jdbcUrl(JdbcDatabaseContainer.scala:11)
	at com.dimafeng.testcontainers.PostgreSQLContainer.jdbcUrl(PostgreSQLContainer.scala:5)
	at org.example.PostgreSQLSpec$$anonfun$1.apply$mcV$sp(PostgreSQLSpec.scala:15)
	at org.example.PostgreSQLSpec$$anonfun$1.apply(PostgreSQLSpec.scala:12)
	at org.example.PostgreSQLSpec$$anonfun$1.apply(PostgreSQLSpec.scala:12)
	at org.scalatest.OutcomeOf$class.outcomeOf(OutcomeOf.scala:85)
	at org.scalatest.OutcomeOf$.outcomeOf(OutcomeOf.scala:104)
	at org.scalatest.Transformer.apply(Transformer.scala:22)

The logs indicate that the container has started and Postgres is waiting for requests.

I did some further debugging and found that the issue is essentially a Precheck in ContainerState (clearly indicated by the stack trace above) to check the containerId before getting the mapped ports. Where is this containerId set and most importantly, what I am doing wrong?

Using Scala 2.11 with Maven.

Code :

class PostgreSQLSpec extends FlatSpec with ForEachTestContainer {
  override def container =
    PostgreSQLContainer()

  it should "do something" in {
    Class.forName(container.driverClassName)
    val connection = DriverManager.getConnection(
      container.jdbcUrl,
      container.username,
      container.password
    )
  }
}

[mithunatri]

To add, this works without any issue with the new API spec.

Closing this issue as it is exactly same as #134 (but for PostgresSQLContainer).

[markarasev]

In my case changing override def container = PostgreSQLContainer() by an override val solved the problem (actually the examples use a val but IntelliJ overrides with a def by default).