Intermittent test failure in CompressionSpec
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Description
I've only seen this once but it should be easy to reproduce using the init seed.
2020-06-30T13:24:01.2915898Z [info] - deflate |> inflate ~= id *** FAILED *** (15 milliseconds)
2020-06-30T13:24:01.2923127Z [info] GeneratorDrivenPropertyCheckFailedException was thrown during property evaluation. (CompressionSpec.scala:182)
2020-06-30T13:24:01.2925822Z [info] Falsified after 12 successful property evaluations.
2020-06-30T13:24:01.2928298Z [info] Message: Insufficient data
2020-06-30T13:24:01.2931902Z [info] Occurred when passed generated values (
2020-06-30T13:24:01.2938149Z [info] "欎쇔ꪮꦼ༪ꢾ怷þ懈辷阬鉁䉒䭣Ê閄俧뾩鹇䚃絼䊎밄펵쯒휆촴䠇ꜿ㼉跦膐꯲馶簙뇉ﰶ弲ㅀ৶녯㯰㈖⛻",
2020-06-30T13:24:01.2942187Z [info] true,
2020-06-30T13:24:01.2990114Z [info] SIX,
2020-06-30T13:24:01.2993112Z [info] DEFAULT,
2020-06-30T13:24:01.2995697Z [info] NO_FLUSH
2020-06-30T13:24:01.2998414Z [info] )
2020-06-30T13:24:01.3001258Z [info] Init Seed: 1593523441226
2020-06-30T13:24:01.3003767Z [info] org.scalatest.exceptions.GeneratorDrivenPropertyCheckFailedException:
2020-06-30T13:24:01.3006539Z [info] ...
2020-06-30T13:24:01.3010119Z [info] at org.scalatest.enablers.PropCheckerAsserting$$anon$3.indicateFutureFailure(PropCheckerAsserting.scala:1575)
2020-06-30T13:24:01.3013577Z [info] at org.scalatest.enablers.FuturePropCheckerAsserting$FuturePropCheckerAssertingImpl.checkResult(PropCheckerAsserting.scala:1402)
2020-06-30T13:24:01.3016669Z [info] at org.scalatest.enablers.FuturePropCheckerAsserting$FuturePropCheckerAssertingImpl.$anonfun$check5$1(PropCheckerAsserting.scala:1480)
2020-06-30T13:24:01.3019842Z [info] at scala.util.Success.$anonfun$map$1(Try.scala:255)
2020-06-30T13:24:01.3022602Z [info] at scala.util.Success.map(Try.scala:213)
2020-06-30T13:24:01.3025493Z [info] at scala.concurrent.Future.$anonfun$map$1(Future.scala:292)
2020-06-30T13:24:01.3028158Z [info] at scala.concurrent.impl.Promise.liftedTree1$1(Promise.scala:33)
2020-06-30T13:24:01.3030968Z [info] ...
2020-06-30T13:24:01.3033513Z [info] Cause: java.util.zip.DataFormatException: Insufficient data
2020-06-30T13:24:01.3037267Z [info] at fs2.compression$.$anonfun$_inflate_stream$2(compression.scala:448)
2020-06-30T13:24:01.3043234Z [info] at fs2.compression$.$anonfun$_inflate_stream$2$adapted(compression.scala:439)
2020-06-30T13:24:01.3049848Z [info] at fs2.Pull$.$anonfun$flatMap$1(Pull.scala:64)
2020-06-30T13:24:01.3054348Z [info] at fs2.internal.FreeC$$anon$1.cont(Algebra.scala:33)
2020-06-30T13:24:01.3059365Z [info] at fs2.internal.FreeC$ViewL$$anon$9$$anon$10.<init>(Algebra.scala:219)
2020-06-30T13:24:01.3063614Z [info] at fs2.internal.FreeC$ViewL$$anon$9.cont(Algebra.scala:219)
2020-06-30T13:24:01.3067728Z [info] at fs2.internal.FreeC$ViewL$$anon$9$$anon$10.cont(Algebra.scala:221)
2020-06-30T13:24:01.3071649Z [info] at fs2.internal.FreeC$ViewL$.mk(Algebra.scala:210)
2020-06-30T13:24:01.3131855Z [info] at fs2.internal.FreeC$ViewL$.apply(Algebra.scala:201)
2020-06-30T13:24:01.3136649Z [info] at fs2.internal.FreeC.viewL(Algebra.scala:86)
2020-06-30T13:24:01.3141339Z [info] ...
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with CompressionSpec.scala:182 and rerun the failing property using init seed 1593523441226. Trace the failure into compression.scala:448, where the stack trace reports DataFormatException: Insufficient data. Done means the intermittent deflate/inflate property no longer fails for this case and the relevant test passes.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- scala
- Domain
- testing-qa
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100