Add a "testutils" module and move common test code there (#1760) #1455

	name: Rhino CI

	on:
	push:
	branches: [ master ]
	pull_request:
	branches: [ master ]

	permissions: read-all

	jobs:
	build:
	runs-on: ubuntu-latest
	strategy:
	# Some tests require more CPU, and all can use multiple CPUs
	max-parallel: 1
	name: Rhino Tests
	steps:
	- name: Check out Rhino
	uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
	- name: Check out test262
	# We don't actually want all the history for this part
	run: git submodule update --init --single-branch
	- name: Set up Java
	uses: actions/setup-java@8df1039502a15bceb9433410b1a100fbe190c53b # v4.5.0
	# By putting JVMs in reverse order, the last one is the one that
	# will go in the path.
	with:
	java-version: \|
	11
	17
	21
	distribution: 'adopt'
	- name: Build and test Java 21
	run: >-
	./gradlew check
	- name: Upload results Java 21
	uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
	if: ${{ always() }}
	with:
	name: reports-java-21
	path: '*/build/reports'
	- name: Build and test Java 17
	env:
	RHINO_TEST_JAVA_VERSION: "17"
	run: >-
	./gradlew check
	- name: Upload results Java 17
	uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
	if: ${{ always() }}
	with:
	name: reports-java-17
	path: '*/build/reports'
	- name: Build and test Java 11
	env:
	RHINO_TEST_JAVA_VERSION: "11"
	run: >-
	./gradlew check
	- name: Upload results Java 11
	uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4.4.3
	if: ${{ always() }}
	with:
	name: reports-java-11
	path: '*/build/reports'

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