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  • Dynamically clones process flow subgraph region
  • Used for repeating steps for independent portions of test environment
    • e.g. install, uninstall, collect logs on all ONOS instances concurrently
  • Has an iteration variable specified as ${var#} property
  • Clones subgraphs for each of var1, var2, … varN
  • Stops cloning when varX becomes undefined or empty
  • Value N can be abstracted using ${#} special property
  • The <parallel> tag itself does not support the name or requires attributes. However, you can wrap the parallel chain in a group tag to get the same effect.

Sequential Chains

  • Dynamically clones process flow subgraph region
  • Used for sequencing steps for portions of test environment
    • e.g. process a task for all ONOS instances sequentially
  • Has an iteration variable specified as ${var#} property
  • Clones subgraphs for each of var1, var2, … varN
  • Stops cloning when varX becomes undefined or empty
  • Value N can be abstracted using ${#} special property
  • Value N-1 can be abstracted using ${#-1} property

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  • Inherent dependencies specified as requires attribute of each step and group element
    • specified as comma-separated list of step or group names
  • Injected dependencies specified as requires attribute of a dependency element
    • used for chaining steps or groups imported from other scenarios
  • Hard dependencies
    • forces wait and failure of predecessor results in step being skipped
  • Soft dependencies - designated by “-” prefix
    • forces wait but failure in predecessor has no impact
  • The "^" requirement is used to indicate the previous step. Note that this only works between a step and a step. If one of the linked steps is within a different group, parallel, or sequential chain then you must specify the requirement by name.