Firefly-2113: Scope test suite and add React component testing

[aventura121]

Firefly-2113: "Scope Existing Test Suite"

This PR also closes:

• Firefly-2114: "Enable React component testing," and
• Firefly-2115: "Add Testing Job to GitHub Workflow."

Description

• Adds a testing workflow to the pull requests that runs the Jest tests only (and skips any firefly-test-data dependent tests).
• This workflow cancels any pending runs as people push additional commits to their pull requests.
• The workflow does not gate merging to dev (that is configured separately in github).
• Updates dependencies to enable unit testing React components.
• Adds a simple test module for CloseButton.jsx to show the React testing works.

Testing

Build: https://firefly-2113-scope-test-suite.irsakubedev.ipac.caltech.edu/firefly

In this case, the pull request here is really the validation, as there are no core application code changes. All test pass as expected, including the React component test for CloseButton.jsx.

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[loitly]

At the moment, it's only the Node version, but there may be more environment setup once we add Java unit tests. I'd suggest running the unit tests through Docker Compose. Since the build/test environment is already defined there, this keeps the environment consistent between local development and CI and avoids duplicating configuration in the GitHub Actions workflow. What do you think?

[aventura121]

At the moment, it's only the Node version, but there may be more environment setup once we add Java unit tests. I'd suggest running the unit tests through Docker Compose. Since the build/test environment is already defined there, this keeps the environment consistent between local development and CI and avoids duplicating configuration in the GitHub Actions workflow. What do you think?

Sounds good to me, @loitly. I added a new service for it, using the same build step as the existing test job. I think this captures your idea. fyi I added a max workers param for jest because it can spawn too many workers when running locally.