Add start of GUI tests for clippy lints page #19040

	name: Clippy Dev Test

	on:
	merge_group:
	pull_request:

	env:
	RUST_BACKTRACE: 1
	CARGO_INCREMENTAL: 0
	RUSTFLAGS: -D warnings

	jobs:
	clippy_dev:
	runs-on: ubuntu-latest

	steps:
	# Setup
	- name: Checkout
	uses: actions/checkout@v4

	# Run
	- name: Build
	run: cargo build
	working-directory: clippy_dev

	- name: Test update_lints
	run: cargo dev update_lints --check

	- name: Test fmt
	run: cargo dev fmt --check

	- name: Test cargo dev new lint
	env:
	RUSTFLAGS: -A unused-imports
	run: \|
	cargo dev new_lint --name new_early_pass --pass early
	cargo dev new_lint --name new_late_pass --pass late
	cargo check
	git reset --hard HEAD

	conclusion_dev:
	needs: [ clippy_dev ]
	# We need to ensure this job does not get skipped if its dependencies fail,
	# because a skipped job is considered a success by GitHub. So we have to
	# overwrite `if:`. We use `!cancelled()` to ensure the job does still not get run
	# when the workflow is canceled manually.
	#
	# ALL THE PREVIOUS JOBS NEED TO BE ADDED TO THE `needs` SECTION OF THIS JOB!
	if: ${{ !cancelled() }}
	runs-on: ubuntu-latest
	steps:
	# Manually check the status of all dependencies. `if: failure()` does not work.
	- name: Conclusion
	run: \|
	# Print the dependent jobs to see them in the CI log
	jq -C <<< '${{ toJson(needs) }}'
	# Check if all jobs that we depend on (in the needs array) were successful.
	jq --exit-status 'all(.result == "success")' <<< '${{ toJson(needs) }}'

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