Add additional tests for verifying persistence of related entities with assigned ids.

[LGDOI]

Given entities Application and Workflow where they have one-to-many relationship: (:Application)-[:CONTAINS_WORKFLOW]->(:Workflow)

In Java, Application has outgoing relationship to List. Workflow has incoming relationship to Application.

    val application1 = ApplicationStub.getOne(id = "app-1")
    val application2 = ApplicationStub.getOne(id = "app-2")

    val workflow1 = WorkflowStub.getOne(id = "wf-1", application = application1)
    val workflow2 = WorkflowStub.getOne(id = "wf-2", application = application2)

    application1.workflows = listOf(workflow1)
    application2.workflows = listOf(workflow2)

The above Kotlin code wires up both relationships.

In order to create graph correctly I can run either one of the following save methods.

//    listOf(application1, application2).forEach(applicationRepository::save)
// or
//    listOf(workflow1, workflow2).forEach(workflowRepository::save)

But, none of the following saveAll creates four nodes but no relationships are created b/w Application and Workflow

//    applicationRepository.saveAll(listOf(application1, application2))
//    applicationRepository.saveAll(listOf(application1))
//    workflowRepository.saveAll(listOf(workflow1, workflow2))
//    workflowRepository.saveAll(listOf(workflow1))

Also, tried uncommenting the following "BOTH" saveAll calls. But, this did not work either.

//    applicationRepository.saveAll(listOf(application1, application2))
//    workflowRepository.saveAll(listOf(workflow1, workflow2))

There seems a bug in saveAll method. Should we expect the save and saveAll behaves in the same manner.

Note: We use SDN v6.1.3.

[LGDOI]

Further troubleshooting narrowed down to specifying id on Workflow causes broken relationship.
Changed the workflow creation without id.

    val workflow1 = WorkflowStub.getOne(application = application1)
    val workflow2 = WorkflowStub.getOne(application = application2)

Then, saveAll works.

    applicationRepository.saveAll(listOf(application1, application2))

Or, saveAll workflows by not giving id on Application works as well.

    val application1 = ApplicationStub.getOne()
    val application2 = ApplicationStub.getOne()
    val workflow1 = WorkflowStub.getOne(id = "wf-1", application = application1)
    val workflow2 = WorkflowStub.getOne(id = "wf-2", application = application2)

    application1.workflows = listOf(workflow1)
    application2.workflows = listOf(workflow2)

    workflowRepository.saveAll(listOf(workflow1, workflow2))

[michael-simons]

This is actually the same issue that is behind #2347. Two for the price of one, thanks a ton for your reports. 👍