Testing Locally with act - Problem with Context Issue

[palagdan]

Hello, I created a GitHub workflow that automatically assigns a label to an issue based on its title and description after the issue is created or edited.

To test this workflow locally, I struggled a lot because using a test repository wasn't very convenient. I found this tool that helps run GitHub Actions workflows locally.

The problem is that my workflow requires the issue creation event to extract the title and labels from the issue and based on these two parameters assigns a label to the issue from the repo available labels.

To simulate this, I created a JSON file with an actual issue object from my test repository and provided it to the act command using the -e flag for a scenario like this:

act -W .github/workflows/issue-created.yml  -e scenarios/create-issue-event.json 

However, when the workflow runs locally, I encounter an error stating that the issue does not exist, or every field of the issue is undefined:

const issue = await octokit.rest.issues.get({
    ...github.context.issue,
    issue_number: github.context.issue.number,
});

Could anyone suggest why this might be happening? Am I missing something in the setup, or is there another way to simulate an issue context for testing? Thank you for any help!