Automated testing on push in Git - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output of this Git hook command?

You have a pre-push Git hook script that runs tests before pushing. The script contains:

#!/bin/sh
npm test

If the tests fail, what will be the output of git push?

Git

#!/bin/sh
npm test

A Push is aborted and error messages from tests are shown.

B Push succeeds regardless of test results.

C Git shows a warning but pushes anyway.

D Push is delayed until tests pass manually.

💡 Hint

Git hooks can stop push if the script exits with an error.

The pre-push hook runs before pushing. If npm test fails (non-zero exit), the push is stopped and test errors are shown.

🧠 Conceptual

intermediate

Why use automated tests on push in Git workflows?

Which of these is the main reason to run automated tests on every push?

A To ensure code quality and catch errors early before integration.

B To slow down the development process intentionally.

C To avoid writing tests locally by developers.

D To automatically merge branches without review.

💡 Hint

Think about preventing broken code from entering shared branches.

Running tests on push helps catch bugs early and keeps the shared codebase stable.

❓ Configuration

advanced

Which Git hook file should you create to run tests automatically before pushing?

You want to run a test script automatically every time you push code. Which file should you create or edit inside the .git/hooks directory?

A post-commit

B post-push

C pre-push

D pre-commit

💡 Hint

The hook runs right before pushing to remote.

The pre-push hook runs before pushing and can block the push if tests fail.

❓ Troubleshoot

advanced

Why does my pre-push hook not stop the push even if tests fail?

You wrote a pre-push hook script to run tests, but even when tests fail, the push still succeeds. What is the most likely cause?

A The remote repository ignores hooks.

B The hook script does not exit with a non-zero status on test failure.

C Git does not support pre-push hooks.

D Tests are not run because the script is named incorrectly.

💡 Hint

Git stops push only if the hook exits with an error code.

If the script always exits with zero, Git assumes success and pushes regardless of test results.

🔀 Workflow

expert

Order the steps in a Git workflow with automated testing on push

Arrange these steps in the correct order when using automated tests triggered by a Git pre-push hook.

A 1,2,4,3

B 2,1,3,4

C 1,3,2,4

D 1,2,3,4

💡 Hint

Think about the natural flow from coding to pushing with tests in between.

First code is written, then Git triggers pre-push hook, which runs tests, and if tests pass, push proceeds.