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A simple implementation of retry mechanism in Groovy
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| class SpecFile extends Specification { | |
| def "Order delivery example test case"() { | |
| given: | |
| def product = createProduct() | |
| expect: | |
| retry { user pay product } waiting 500 upTo 3000 until { | |
| it?.responseData?.status == "success" | |
| } | |
| when: | |
| def delivery = merchant ship product | |
| then: | |
| with(delivery.responseData) { | |
| productId == product.id | |
| delivery.address == user.address | |
| status == "success" | |
| // ... | |
| } | |
| } | |
| } |
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| class RetryUtil { | |
| Closure action | |
| long sleep = 1000 | |
| long timeout = 10000 | |
| static def retry(Closure action) { | |
| new RetryUtil(action: action) | |
| } | |
| def waiting(long sleep) { | |
| this.sleep = sleep; | |
| return this | |
| } | |
| def upTo(long timeout) { | |
| this.timeout = timeout | |
| return this | |
| } | |
| def until(Closure<Boolean> predicate) { | |
| def start = currentTimeMillis() | |
| def iterator = [hasNext: { currentTimeMillis() - start < timeout }, | |
| next : { sleep(sleep); action() }] as Iterator | |
| iterator.find predicate | |
| } |
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