feat: random slug-prefix parameter for link anchors

README.md

@@ -212,6 +212,7 @@ jobs:
 | time       | Test execution time [ms] |
 | url        | Check run URL            |
 | url_html   | Check run URL HTML       |
+| slug_prefix| Random anchor links slug prefix generated for the summary headers |
 
 ## Supported formats
 

__tests__/utils/slugger.test.ts

@@ -0,0 +1,28 @@
+import {DEFAULT_OPTIONS} from '../../src/report/get-report.js'
+import {slug} from '../../src/utils/slugger.js'
+
+describe('slugger', () => {
+  it('adds prefix from report options to generated slug', () => {
+    const result = slug('r0s1', {
+      ...DEFAULT_OPTIONS,
+      slugPrefix: 'prefix-'
+    })
+
+    expect(result).toEqual({
+      id: 'user-content-prefix-r0s1',
+      link: '#user-content-prefix-r0s1'
+    })
+  })
+
+  it('sanitizes custom prefix using existing slug normalization', () => {
+    const result = slug('r0', {
+      ...DEFAULT_OPTIONS,
+      slugPrefix: ' my /custom_prefix?.'
+    })
+
+    expect(result).toEqual({
+      id: 'user-content-my-customprefix-r0',
+      link: '#user-content-my-customprefix-r0'
+    })
+  })
+})

action.yml

@@ -122,6 +122,8 @@ outputs:
     description: Check run URL
   url_html:
     description: Check run URL HTML
+  slug_prefix:
+    description: Random prefix added to generated report anchor slugs for this action run
 runs:
   using: 'node20'
   main: 'dist/index.js'

src/main.ts

@@ -1,6 +1,7 @@
 import * as core from '@actions/core'
 import * as github from '@actions/github'
 import {GitHub} from '@actions/github/lib/utils'
+import {randomBytes} from 'node:crypto'
 
 import {ArtifactProvider} from './input-providers/artifact-provider.js'
 import {LocalFileProvider} from './input-providers/local-file-provider.js'
@@ -49,6 +50,7 @@ class TestReporter {
   readonly workDirInput = core.getInput('working-directory', {required: false})
   readonly onlySummary = core.getInput('only-summary', {required: false}) === 'true'
   readonly useActionsSummary = core.getInput('use-actions-summary', {required: false}) === 'true'
+  readonly slugPrefix = `tr-${randomBytes(4).toString('base64url')}-`
   readonly badgeTitle = core.getInput('badge-title', {required: false})
   readonly reportTitle = core.getInput('report-title', {required: false})
   readonly collapsed = core.getInput('collapsed', {required: false}) as 'auto' | 'always' | 'never'
@@ -144,6 +146,7 @@ class TestReporter {
     core.setOutput('failed', failed)
     core.setOutput('skipped', skipped)
     core.setOutput('time', time)
+    core.setOutput('slug_prefix', this.slugPrefix)
 
     if (this.failOnError && isFailed) {
       core.setFailed(`Failed test were found and 'fail-on-error' option is set to ${this.failOnError}`)
@@ -174,7 +177,7 @@ class TestReporter {
       }
     }
 
-    const {listSuites, listTests, onlySummary, useActionsSummary, badgeTitle, reportTitle, collapsed} = this
+    const {listSuites, listTests, slugPrefix, onlySummary, useActionsSummary, badgeTitle, reportTitle, collapsed} = this
 
     const passed = results.reduce((sum, tr) => sum + tr.passed, 0)
     const failed = results.reduce((sum, tr) => sum + tr.failed, 0)
@@ -188,6 +191,7 @@ class TestReporter {
         {
           listSuites,
           listTests,
+          slugPrefix,
           baseUrl,
           onlySummary,
           useActionsSummary,
@@ -219,6 +223,7 @@ class TestReporter {
       const summary = getReport(results, {
         listSuites,
         listTests,
+        slugPrefix,
         baseUrl,
         onlySummary,
         useActionsSummary,

src/report/get-report.ts

@@ -11,6 +11,7 @@ const MAX_ACTIONS_SUMMARY_LENGTH = 1048576
 export interface ReportOptions {
   listSuites: 'all' | 'failed' | 'none'
   listTests: 'all' | 'failed' | 'none'
+  slugPrefix: string
   baseUrl: string
   onlySummary: boolean
   useActionsSummary: boolean
@@ -22,6 +23,7 @@ export interface ReportOptions {
 export const DEFAULT_OPTIONS: ReportOptions = {
   listSuites: 'all',
   listTests: 'all',
+  slugPrefix: '',
   baseUrl: '',
   onlySummary: false,
   useActionsSummary: true,

src/utils/slugger.ts

@@ -4,7 +4,7 @@
 import {ReportOptions} from '../report/get-report.js'
 
 export function slug(name: string, options: ReportOptions): {id: string; link: string} {
-  const slugId = name
+  const slugId = `${options.slugPrefix}${name}`
     .trim()
     .replace(/_/g, '')
     .replace(/[./\\]/g, '-')