Chuck's Academy

Git Hooks and Automation

Practical Examples of Pre-push Hooks

In this section, we will explore some practical examples of how to use the pre-push hook to automate important tasks before commits are pushed to the remote repository. These examples will help you ensure that the code meets certain standards and passes the necessary tests before being shared with others.

Example 1: Running Automated Tests

Before pushing changes to the remote repository, it is a good practice to run automated tests to ensure no errors are introduced.

Hook Setup

  1. Create the file .git/hooks/pre-push with the following content:

    bash
  2. Make the script executable:

    bash

Example 2: Test Coverage Verification

Ensuring that the code has adequate test coverage is crucial for maintaining quality. We can set up a pre-push hook to check test coverage before allowing the push.

Hook Setup

  1. Configure the test coverage tool in your project (e.g., jest with the --coverage option).

  2. Create the file .git/hooks/pre-push with the following content:

    bash
  3. Make the script executable:

    bash

Example 3: Dependency Security Check

It is important to ensure there are no vulnerabilities in the project's dependencies before pushing changes. Tools like npm audit can be used for this task.

Hook Setup

  1. Create the file .git/hooks/pre-push with the following content:

    bash
  2. Make the script executable:

    bash

[Placeholder for image: Screenshot of the npm audit output in a terminal]

Example 4: Code Format Validation

Ensuring that the code is properly formatted before pushing it to the remote repository is another good practice. We can use Prettier for this task.

Hook Setup

  1. Install Prettier in your project if you haven't already:

    bash
  2. Create the file .git/hooks/pre-push with the following content:

    bash
  3. Make the script executable:

    bash

[Placeholder for image: Example of Prettier highlighting formatting issues in the code]

Example 5: Modified File Verification

We can ensure that unwanted or large files are not included in the push. This can take many forms, from avoiding unwanted binary files to imposing file size limits.

Hook Setup

  1. Create the file .git/hooks/pre-push with the following content:

    bash
  2. Make the script executable:

    bash

Customizing Hooks

Just like with pre-commit hooks, you can combine several tasks into a single pre-push hook to tailor validation processes to your project's needs.

Combined Example of Pre-push Hook

Combine multiple validations into a single pre-push script:

bash

Remember to always make the script executable:

bash

In the next section, we will see how to integrate CI/CD tools with Git Hooks to further enhance workflow and automation.

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