Seems Good Enough to Me: Working with Testers to Derisk Upgrades

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Seems Good Enough to Me @jennydoesthings Working With Testers to Derisk Elixir Upgrades

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• Director of Quality Engineering, Pap a • Tester by nature and nurtur e • Pronouns are she/he r • I have stickers! Jenny Bramble @jennydoesthings - #ElixirConf2022

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@jennydoesthings @jennydoesthings I don’t think I need to convince anyone in the room that keeping our ecosystem up to date is a good thing.

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@jennydoesthings @jennydoesthings What problem do we want to solve?

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What problem do we want to solve? • Upgrades are risky but necessary . • Most parts of our teams don’t understand how risky upgrades are or are not . • Regression testing takes forever and uses a lot of our resources . • If we mess up, it could be real bad. @jennydoesthings

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@jennydoesthings

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@jennydoesthings @jennydoesthings How do we make upgrades less risky?

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@jennydoesthings @jennydoesthings I have an easy answer.

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@jennydoesthings @jennydoesthings Do less testing.

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@jennydoesthings

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@jennydoesthings @jennydoesthings How do we make upgrades less risky?

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@jennydoesthings @jennydoesthings I believe we derisk upgrades by testing the smallest set of features that give us confidence to move forward.

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@jennydoesthings @jennydoesthings That seems obvious, right?

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@jennydoesthings @jennydoesthings Let’s talk about ‘good enough testing’.

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Good Enough Testing • Thoughtfully and intentionally craft test scenario s • Detail what we aren’t testing and wh y • Don’t thras h • Don’t toi l • Prioritizes whitewater kayaking and hiking @jennydoesthings

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@jennydoesthings

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Good Enough Testing • Thoughtfully and intentionally craft test scenario s • Detail what we aren’t testing and wh y • Don’t thras h • Don’t toi l • Prioritizes work-life balance @jennydoesthings

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@jennydoesthings @jennydoesthings Testers hold the mental model of the system in our minds.

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@jennydoesthings @jennydoesthings How do we express that in upgrades?

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@jennydoesthings @jennydoesthings Spoiler alert: this isn’t going to be a radical shift.

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@jennydoesthings @jennydoesthings Start with the changelog.

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@jennydoesthings @jennydoesthings Now communicate it.

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@jennydoesthings @jennydoesthings For each thing we think will affect us, determine its risk profile.

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@jennydoesthings

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@jennydoesthings @jennydoesthings What if we get it right?

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@jennydoesthings @jennydoesthings How would this express if we missed something?

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@jennydoesthings @jennydoesthings Do we care?

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@jennydoesthings @jennydoesthings How will we monitor and observe?

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@jennydoesthings @jennydoesthings Stop throwing things over the wall…

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@jennydoesthings @jennydoesthings ….to production.

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@jennydoesthings @jennydoesthings How will we monitor and observe?

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@jennydoesthings @jennydoesthings Taadaa, risk profile!

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@jennydoesthings @jennydoesthings Craft scenarios.

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@jennydoesthings @jennydoesthings Defend yourselves.

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@jennydoesthings

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@jennydoesthings @jennydoesthings Defend yourselves.

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@jennydoesthings - #ElixirConf2022

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@jennydoesthings @jennydoesthings This is how we introduce nuance to our testing.

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@jennydoesthings @jennydoesthings This is how we derisk upgrades.

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@jennydoesthings @jennydoesthings To recap:

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Do less testing. • Craft thoughtful, intentional scenarios . • Describe what we aren’t testing and why . • Embrace minimalism. @jennydoesthings

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Communicate more. • Share your plans . • Defend your plans . • Give others a reason to trust you. @jennydoesthings

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Questions? @jennydoesthings • jenny.bramble@gmail.com • Twitter: @jennydoesthings

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