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delay

Openhab Language with Delay Support

- Given Clean OpenHAB with latest Ruby Libraries
Delay should sleep specified duration between execution elements
- Given a rule
```
rule 'Delay sleeps between execution elements' do
  on_start
  run { logger.info("Sleeping") }
  delay 5.seconds
  run { logger.info("Awake") }
end
```
- When I deploy the rule
- Then It should log 'Sleeping' within 5 seconds
- But It should not log 'Awake' within 4 seconds
- Then If I wait 3 seconds
- Then It should log 'Awake' within 5 seconds
Multiple delays can be used between execution elements
- Given a rule
```
rule 'Multiple delays can exist in a rule' do
  on_start
  run { logger.info("Sleeping") }
  delay 5.seconds
  run { logger.info("Sleeping Again") }
end
```
- When I deploy the rule
- Then It should log 'Sleeping' within 5 seconds
- But It should not log 'Sleeping Again' within 3 seconds
- Then If I wait 3 seconds
- Then It should log 'Sleeping Again' within 5 seconds