@Test
public void testValidateAndTrimDownloadBusinessObjectDataStorageFileSingleInitiationRequestIsNull()
{

    // Specify the expected exception.
    expectedException.expect(IllegalArgumentException.class);
    expectedException.expectMessage("A download business object data storage file single initiation request must be specified.");
    // Call the method under test.
    uploadDownloadHelper.validateAndTrimDownloadBusinessObjectDataStorageFileSingleInitiationRequest(null);
    // Verify the external calls.
    verifyNoMoreInteractions(alternateKeyHelper);
}