Add explicit relationship tests prior to adding MSSQL support

[Steve-Mcl]

Description

Explicit tests to ensure changes made to models for supporting MSSQL have no adverse affect.

Therefore it is important this PR is passing and merged before any introduction of MSSQL specific works derived from #3689

The tables that are affected by the MSSQL branch are:

• ProjectStacks
• ProjectTypes
• Projects
• DeviceGroups
• Devices
• ProjectSnapshots
• PipelineStages

The tests added check every relation on these tables.

  Device model
    Relations
      ✔ should delete Device on Team delete
      ✔ should update Device.TeamId on Team.id update
      ✔ should set Device.targetSnapshotId to null when ProjectSnapshot is deleted
      ✔ should update Device.targetSnapshotId when ProjectSnapshot.id is updated
      ✔ should set Device.activeSnapshotId to null when ProjectSnapshot is deleted
      ✔ should update Device.activeSnapshotId when ProjectSnapshot.id is updated
      ✔ should set Device.ApplicationId to null when Application is deleted
      ✔ should update Device.ApplicationId on Application.id update
      ✔ should set Device.ProjectId to null when Project is deleted
      ✔ should update Device.ProjectId on Project.id update
      ✔ should set Device.DeviceGroupId to null when DeviceGroup is deleted
      ✔ should update Device.DeviceGroupId on DeviceGroup.id update

  DeviceGroup model
    Relations
      ✔ should delete DeviceGroup on Application delete
      ✔ should update DeviceGroup.ApplicationId on Application.id update
      ✔ should set DeviceGroup.targetSnapshotId to null when ProjectSnapshot is deleted
      ✔ should update DeviceGroup.targetSnapshotId when ProjectSnapshot.id is updated

  Project model
    Relations
      ✔ should delete Project on Application delete
      ✔ should update Project.ApplicationId on Application.id update
      ✔ should set Project.TeamId NULL on Team delete
      ✔ should update Project.TeamId on Team.id update
      ✔ should set Project.ProjectTypeId NULL on ProjectType delete
      ✔ should update Project.ProjectTypeId on ProjectType.id update
      ✔ should set Project.ProjectStackId NULL on ProjectStack delete
      ✔ should update Project.ProjectStackId on ProjectStack.id update
      ✔ should set Project.ProjectTemplateId NULL on ProjectTemplate delete
      ✔ should update Project.ProjectTemplateId on ProjectTemplate.id update

  ProjectSnapshot model
    Relations
      ✔ should delete ProjectSnapshot when Project is deleted
      ✔ should update ProjectSnapshot.ProjectId when Project.id is updated
      ✔ should set ProjectSnapshot.DeviceId to null when Device is deleted
      ✔ should update ProjectSnapshot.DeviceId when Device.id is updated
      ✔ should set ProjectSnapshot.UserId to null when User is deleted (100ms)
      ✔ should update ProjectSnapshot.UserId when User.id is updated (83ms)

  ProjectStack model
    Relations
      ✔ should set ProjectStack.ProjectTypeId to null when ProjectType is deleted
      ✔ should update ProjectStack.ProjectTypeId when ProjectType is updated
      ✔ should set ProjectStack.replacedBy to null when ProjectStack is deleted
      ✔ should update ProjectStack.replacedBy when ProjectStack is updated

  ProjectType model
    Relations
      ✔ should set ProjectType.defaultStackId to null when ProjectStack is deleted
      ✔ should update ProjectType.defaultStackId when ProjectStack.id is updated

  PipelineStage model
    Relations
      ✔ should set PipelineStage.NextStageId to null when PipelineStage is deleted (61ms)
      ✔ should update PipelineStage.NextStageId when PipelineStage.id is updated (82ms)
      ✔ should set PipelineStage.PipelineId to null when Pipeline is deleted
      ✔ should update PipelineStage.PipelineId when Pipeline.id is updated

Related Issue(s)

Checklist

• I have read the contribution guidelines
• Suitable unit/system level tests have been added and they pass
• Documentation has been updated
  • Upgrade instructions
  • Configuration details
  • Concepts
• Changes flowforge.yml?
  • Issue/PR raised on FlowFuse/helm to update ConfigMap Template
  • Issue/PR raised on FlowFuse/CloudProject to update values for Staging/Production

Labels

• Backport needed? -> add the backport label
• Includes a DB migration? -> add the area:migration label

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.84%. Comparing base (72e7ee2) to head (7f66193).
Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3700      +/-   ##
==========================================
+ Coverage   41.80%   41.84%   +0.03%     
==========================================
  Files         630      630              
  Lines       24459    24459              
  Branches     5993     5993              
==========================================
+ Hits        10226    10235       +9     
+ Misses      14233    14224       -9     

Flag	Coverage Δ
backend	78.64% <ø> (+0.07%)	⬆️
frontend	1.90% <ø> (ø)

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[hardillb]

Just that one question