[STUDY GROUP]: GitHub Actions Exam

[FidelusAleksander]

GitHub Actions 📖 STUDY GROUP

Hello everyone,

Many of us are preparing for the GitHub Certification Exams and I thought it would be beneficial to start a discussion where we can share:

• experiances
• study tips
• ask questions
• anything else regarding any of the topics covered in the exam

Looking forward to hearing from you all! 🚀

[reubendevries]

Does anyone feel like the answer to this question is incorrect?

Q13: A workflow was initially run on commit A and failed. You fixed the workflow with the subsequent commit B. When you re-run that workflow it will run with code from which commit?

For some reason it says it will reuse commit A but I don't think that's true. I think once you make a new commit, it won't use commit A to build the workflow but commit B, and you wouldn't want it to use commit A, because commit A was failing - am I taking crazy pills here?

I think the documentation they are referring to is saying something different, at no point in the documentation does it mention making a change and then committing and pushing that change. Granted it doesn't mention making a push in the question, so either it's a poorly worded question that is either testing your reading comprehension (Which is a pet peeve of mine when technical tests do that or it's just flat out wrong).

[marcosboger]

A bit late to it, but I believe the keyword here is re-run. If you manually trigger or run the workflow again, sure, it will use the latest commit. However, when re-running, it will use the workflow from the original commit.

Created a simple example here in this repo, feel free to check it out: https://github.com/marcosboger/workflow-rerun-test

I've ran the original workflow and it had the following output:

I've commited changing the hello world message:

If I re-run, it still prints the old hello world message:

If I trigger manually a new run, it prints the new message:

[reubendevries]

Makes perfect sense, thanks for clarifying!

[ThierryKassa]

Hi everyone. I have my exam tomorrow and I need help on this question. My main concern is "include" allow job duplication in the matrix? I asked ChatGPT and it says the answer is 6 with this comment: “The include keyword lets you add additional combinations to the matrix. If the parameters match an existing combination, the job is duplicated.”

Q7: Given the following configuration, how many jobs will GitHub Actions run when this matrix is evaluated?
strategy:
matrix:
os: [ubuntu-latest, windows-latest]
node: [14, 16]
include:
- os: macos-latest
node: 18
- os: ubuntu-latest
node: 14

7 jobs

No jobs will run because the syntax is invalid.

5 jobs

6 jobs

4 jobs

[ThierryKassa]

I tested in my repo and outputs 5 jobs

[FidelusAleksander]

That's the best way to check things - test on your own repo - makes you remember so much more 👍 Good job

Hope you passed the exam @ThierryKassa ! 🚀