Provide information about outdated Gradle versions in the job summary

sources/test/jest/job-summary.test.ts

@@ -1,9 +1,20 @@
 import dedent from 'dedent'
 import * as github from '@actions/github'
-import {afterEach, describe, expect, it} from '@jest/globals'
+import {afterEach, beforeEach, describe, expect, it, jest} from '@jest/globals'
 
 import {BuildResult} from '../../src/build-results'
-import {jobMarker, renderSummaryTable} from '../../src/job-summary'
+import {SupportStatus} from '../../src/gradle-support-status'
+
+const mockSupportStatusOf = jest.fn<(gradleVersion: string) => SupportStatus | undefined>()
+jest.unstable_mockModule('../../src/gradle-support-status', () => ({
+    supportStatusOf: mockSupportStatusOf
+}))
+
+const {jobMarker, renderSummaryTable} = await import('../../src/job-summary')
+
+beforeEach(() => {
+    mockSupportStatusOf.mockReturnValue('active')
+})
 
 const MATRIX_INPUT_ENV = 'INPUT_WORKFLOW-JOB-CONTEXT'
 
@@ -185,6 +196,53 @@ describe('renderSummaryTable', () => {
     })
 })
 
+describe('Gradle version support status', () => {
+    it('marks an outdated version and adds a details section', () => {
+        mockSupportStatusOf.mockReturnValue('eol')
+        const table = renderSummaryTable([successfulHelpBuild])
+        expect(table.trim()).toBe(dedent`
+            <table>
+                <tr>
+                    <th>Gradle Root Project</th>
+                    <th>Requested Tasks</th>
+                    <th>Gradle Version</th>
+                    <th>Build Outcome</th>
+                    <th>Build&nbsp;Scan®</th>
+                </tr>
+                <tr>
+                    <td>root</td>
+                    <td>help</td>
+                    <td align='center'>8.0 <span title="End-of-life: no longer receives bug fixes or security fixes">:warning:</span></td>
+                    <td align='center'>:white_check_mark:</td>
+                    <td><a href="https://scans.gradle.com/s/abc123" rel="nofollow" target="_blank"><img src="https://img.shields.io/badge/Build%20Scan%C2%AE-06A0CE?logo=Gradle" alt="Build Scan published" /></a></td>
+                </tr>
+            </table>
+
+            <h4>:warning: This Job uses an outdated Gradle version</h4>
+            <details>
+                <summary>Gradle release end-of-life policy</summary>
+                <p>For major versions, Gradle will backport critical fixes and security fixes to the last minor in the
+                previous major version. As such, each major Gradle release causes:</p>
+                <ul>
+                    <li>The previous major version becomes maintenance only. It will only receive critical bug fixes
+                    and security fixes.</li>
+                    <li>The major version before the previous one to become end-of-life (EOL), and that release line
+                    will not receive any new fixes.</li>
+                </ul>
+                <a href="https://docs.gradle.org/current/userguide/feature_lifecycle.html#eol_support" target="_blank">Gradle feature lifecycle</a>
+            </details>
+        `);
+    })
+    it('marks a maintenance-only version', () => {
+        mockSupportStatusOf.mockReturnValue('maintenance')
+        const table = renderSummaryTable([successfulHelpBuild])
+        expect(table).toContain(
+            `<td align='center'>8.0 <span title="Maintenance only: receives critical bug fixes and security fixes only">:information_source:</span></td>`
+        )
+        expect(table).toContain('This Job uses an outdated Gradle version')
+    })
+})
+
 describe('jobMarker', () => {
     const original = process.env[MATRIX_INPUT_ENV]