Lightning Talks about events HOT 8 CLOSED

Title: Mastering Your Tools (Why don't people do this?)

Tools amplify your talent. The better your tools, and the better you know how to use them, the more productive you can be.”
― Andrew Hunt, The Pragmatic Programmer: From Journeyman to Master

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hi @ttsui ! could we have the "Mastering Your Tools (Why don't people do this?)" talk in the next event https://www.meetup.com/en-AU/Software-Craftsmanship-Sydney/events/243295595/?eventId=243295595?

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@rodolfoprr Sure. It'll be good if we can get a few more lightning talks. I hardly be able to fill the whole time slot.

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@ttsui 15 minutes is 👍 for you?

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@rodolfoprr Sure. I can ramble on for 15.

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@ttsui cool! so I'm adding your lightning talk :)

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Set for September edition: https://www.meetup.com/en-AU/Software-Craftsmanship-Sydney/events/243295595/

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I don't have any talk but I have a question/problem:

I have a functionality that starts with a few SQL query and then I call a pure method to format my entity. it is composed of a lot of pure function and it must take me 500 lines of highly functional code (very dense).
It looks like this

function myfunctionnality(param) {
 const myData = callSQLs(param)
 return formatData(data)
}

function formatData(data) {
   formatEntityA(data)
   formatEntityB(data)
   formatEntityB(data)
}
function formatEntityA(data) {
   formatEntityA1(data)
   formatEntityA2(data)
   formatEntityA2(data)
}

function formatEntityB(data) {
   formatEntityB1(data)
   formatEntityB2(data)
   formatEntityB2(data)
}
...

it continues like that for 500 lines. The code is readable (could be improved a lot) but I am unsure on how to test it:

• I have chosen not to write any unit or integration on the callSQLs
• I tested every formatXXX function to handle its cyclomatic complexity but without mocking the child functions.

My issue most of the time I modify the functionality of one function, it will break the parent function.
If I were to mock the child function, I would need to update those mocks.

Unfortunately, I cannot show some code because it doesn't belong to me.
Starting with this real life example we could talk about:

• Mocking strategy
• Classic TDD vs London school TDD

What do you think, could this spark a nice debate?

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