tweag/asterius

Implement `ghc-testsuite` report diff script and run on CI

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#285 opened on Sep 15, 2019

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P2good first issuetype: feature request

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Description

Currently, to spot regressions in one of the ghc-testsuite jobs, we need to manually download the CSV reports from CircleCI and perform diffing based on some ad hoc script, and since it's not mechanized we don't perform this for every PR, increasing the chance of regression. We should implement:

  • Script to diff two CSV reports, locating the fixes & regressions, taking into account the possibility of ghc-testsuite tests may get added or deleted
  • Script to query CircleCI artifacts and download available reports from parent commits
  • Run the scripts on CI. We should probably fail the job if there's regression, provided that we got rid of non-determinism (like in #284) in test runs

Contributor guide

Research direction
Examine the current CircleCI setup and CSV report generation, then write a script to diff reports and add a CI job to run it automatically.
Tech stack
haskell
Domain
testingci cd
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Git
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60