Implement JS Client tests

[hannahblair]

Description

Adds tests for @gradio/client

• client
• duplicate
• init_helpers.ts (resolve_root, get_jwt, map_names_to_ids, determine_protocol)
• data.ts (walk_and_store_blobs, update_object, skip_queue, post_message)
• api_info.ts (handle_message, get_description, get_type, process_endpoint)
• view_api.ts
• spaces.ts (set_space_timeout, get_space_hardware, check_space_status, discussions_enabled)
• upload_files.ts
• post_data.ts

Tests new and deprecated syntax:

• await Client.connect()
• deprecated await client()
• Client.duplicate()
• deprecated duplicate
• Client class overrides

To test separately:

• stream.ts
• submit.ts
• predict.ts

I'd like to write tests in a separate PR for these because 1) there are lots of tests to write for submit() 2) testing SSE events is a little complicated (but doable) 3) I'd also like to see if we can test with a local spun up demo as we do in the Python client in that PR

Implicitly tested and could do with unit tests:

• resolve_config
• handle_blob.ts

Closes: #4658

🎯 PRs Should Target Issues

Before your create a PR, please check to see if there is an existing issue for this change. If not, please create an issue before you create this PR, unless the fix is very small.

Not adhering to this guideline will result in the PR being closed.

Tests

1. PRs will only be merged if tests pass on CI. To run the tests locally, please set up your Gradio environment locally and run the tests: bash scripts/run_all_tests.sh

2. You may need to run the linters: bash scripts/format_backend.sh and bash scripts/format_frontend.sh

[gradio-pr-bot]

🪼 branch checks and previews

•	Name	Status	URL
	Spaces	ready!	Spaces preview
	Website	ready!	Website preview
	Storybook	ready!	Storybook preview
🦄	Changes	detected!	Details

---

Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/f9395788452e6354aeed0ad4b06368989e705dde/gradio-4.28.3-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@f9395788452e6354aeed0ad4b06368989e705dde#subdirectory=client/python"

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/app	minor
@gradio/client	minor
gradio	minor

• Maintainers can select this checkbox to manually select packages to update.

With the following changelog entry.

Implement JS Client tests

Maintainers or the PR author can modify the PR title to modify this entry.

Something isn't right?

• Maintainers can change the version label to modify the version bump.
• If the bot has failed to detect any changes, or if this pull request needs to update multiple packages to different versions or requires a more comprehensive changelog entry, maintainers can update the changelog file directly.

[pngwn]

Looks great to me! Just left a small question.

Thanks so much for taking care of this @hannahblair! Writing this many tests at once is not much fun!

We can add some e2e tests in a follow up and maybe think about a node/ happy-dom matrix.