[jira] [Created] (FLINK-7070) Rework ScalaShellITCase#testSubmissionOfExternalLibraryStream

["Chesnay Schepler (JIRA)" <ji...@apache.org>]

Chesnay Schepler created FLINK-7070:
---------------------------------------

             Summary: Rework ScalaShellITCase#testSubmissionOfExternalLibraryStream
                 Key: FLINK-7070
                 URL: https://issues.apache.org/jira/browse/FLINK-7070
             Project: Flink
          Issue Type: Improvement
          Components: Scala Shell, Tests
    Affects Versions: 1.4.0
            Reporter: Chesnay Schepler
            Priority: Critical
             Fix For: 1.4.0


The {{ScalaShellITCase}} makes use of flink-ml jar in one of it's tests. Since flink-ml is not even declared as a dependency the test only works because by coincidence flink-ml is build before flink-scala-shell.

{code}
  @Test
  def testSubmissionOfExternalLibraryBatch: Unit = {
  ...
  val folder = findLibraryFolder(
    "../flink-libraries/flink-ml/target/",
    "../../flink-libraries/flink-ml/target/")
  ...
  }

  def findLibraryFolder(paths: String*): File = {
    for (path <- paths) {
      val folder = new File(path)
      if (folder.exists()) {
        return folder
      }
    }
    throw new RuntimeException("Library folder not found in any of the supplied paths!")
  }
{code}

At the very least we should declare the dependency, or even better rework this test to rely on a custom jar built in flink-scala-shell to reduce dependencies.

Also, the exception message in {{findLibraryFolder}} should contain the folder it couldn't find.



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