H2 database content is not persisting on insert and update - postgresql

Question

I am using h2 database to test my postgres slick functionality.
I created a below h2DbComponent:
trait H2DBComponent extends DbComponent {
val driver = slick.jdbc.H2Profile
import driver.api._
val h2Url = "jdbc:h2:mem:test;MODE=PostgreSQL;DB_CLOSE_DELAY=-1;DATABASE_TO_UPPER=false;INIT=runscript from './test/resources/schema.sql'\\;runscript from './test/resources/schemadata.sql'"
val logger = LoggerFactory.getLogger(this.getClass)
val db: Database = {
logger.info("Creating test connection ..................................")
Database.forURL(url = h2Url, driver = "org.h2.Driver")
}
}
In the above snippet i am creating my tables using schema.sql and inserting a single row(record) with schemadata.sql.
Then i am trying to insert a record into the table as below using my test case:
class RequestRepoTest extends FunSuite with RequestRepo with H2DBComponent {
test("Add new Request") {
val response = insertRequest(Request("XYZ","tk", "DM", "RUNNING", "0.1", "l1", "file1",
Timestamp.valueOf("2016-06-22 19:10:25"), Some(Timestamp.valueOf("2016-06-22 19:10:25")), Some("scienceType")))
val actualResult=Await.result(response,10 seconds)
assert(actualResult===1)
val response2 = getAllRequest()
assert(Await.result(response2, 5 seconds).size === 2)
}
}
The above assert of insert works fine stating that the record is inserted. But the getAllRequest() assert fails as the output still contains the single row(as inserted by schemadata.sql) => which means the insertRequest change is not persisted. However the below statements states that the record is inserted as the insert returned 1 stating one record inserted.
val response = insertRequest(Request("CMP_XYZ","tesco_uk", "DM", "RUNNING", "0.1", "l1", "file1",
Timestamp.valueOf("2016-06-22 19:10:25"), Some(Timestamp.valueOf("2016-06-22 19:10:25")),
Some("scienceType")))
val actualResult=Await.result(response,10 seconds)
Below is my definition of insertRequest:
def insertRequest(request: Request):Future[Int]= {
db.run { requestTableQuery += request }
}
I am unable to figure out how can i see the inserted record. Is there any property/config which i need to add?

Answer 1

But the getAllRequest() assert fails as the output still contains the single row(as inserted by schemadata.sql) => which means the insertRequest change is not persisted
I would double-check that the assert(Await.result(response2, 5 seconds).size === 2) line is failing because of a size difference. Could it be failing for some other general failure?
For example, as INIT is run on each connection it could be that you are re-creating the database for each connection. Unless you're careful with the SQL, that could produce an error such as "table already exists". Adding TRACE_LEVEL_SYSTEM_OUT=2; to your H2 URL can be helpful in tracking what H2 is doing.
A couple of suggestions.
First, you could ensure your SQL only runs as needed. For example, your schema.sql could add checks to avoid trying to create the table twice:
CREATE TABLE IF NOT EXISTS my_table( my_column VARCHAR NULL );
And likewise for your schemadata.sql:
MERGE INTO my_table KEY(my_column) VALUES ('a') ;
Alternatively, you could establish schema and test data around your tests (e.g., possibly in Scala code, using Slick). Your test framework probably has a way to ensure something is run before and after a test or test suit.