allow user defined pull request number

README.md

@@ -85,6 +85,7 @@ This action requires the `pull-request: write` permission to add a comment to yo
 | `file-coverage-mode`        | Defines how file-based coverage is reported. Possible values are `all`, `changes` or `none`.                                                                               | `changes`                                                                     |
 | `name`                      | Give the report a custom name. This is useful if you want multiple reports for different test suites within the same PR. Needs to be unique.                               | ''                                                                            |
 | `json-summary-compare-path` | The path to the json summary file to compare against. If given, will display a trend indicator and the difference in the summary. Respects the `working-directory` option. | undefined                                                                     |
+| `pr-number`                 | The number of the PR to post a comment to (if any)                                                                                                                             | If in the context of a PR, the number of that PR.<br/> If in the context of a triggered workflow, the PR of the triggering workflow.                                                                    <br/>If no PR context is found, it defaults to `undefined` |
 
 #### File Coverage Mode
 

action.yml

@@ -32,6 +32,10 @@ inputs:
       required: false
       description: 'The name of the coverage report. Can be used to execute this action multiple times. '
       default: ''
+  pr-number:
+      required: false
+      description: 'An optional, user-defined pull request number.'
+      default: ''
 runs:
   using: 'node20'
   main: 'dist/index.js'

src/index.ts

@@ -18,13 +18,14 @@ const run = async () => {
 		jsonSummaryComparePath,
 		name,
 		thresholds,
-		workingDirectory
+		workingDirectory,
+		processedPrNumber
 	} = await readOptions();
 
 	const jsonSummary = await parseVitestJsonSummary(jsonSummaryPath);
-  
+
 	let jsonSummaryCompare;
-	if(jsonSummaryComparePath) {
+	if (jsonSummaryComparePath) {
 		jsonSummaryCompare = await parseVitestJsonSummary(jsonSummaryComparePath);
 	}
 
@@ -48,7 +49,8 @@ const run = async () => {
 	try {
 		await writeSummaryToPR({
 			summary,
-			markerPostfix: getMarkerPostfix({ name, workingDirectory })
+			markerPostfix: getMarkerPostfix({ name, workingDirectory }),
+			userDefinedPrNumber: processedPrNumber
 		});
 	} catch (error) {
 		if (error instanceof RequestError && (error.status === 404 || error.status === 403)) {

src/inputs/options.ts

@@ -15,18 +15,28 @@ async function readOptions() {
 	const jsonFinalPath = path.resolve(workingDirectory, core.getInput('json-final-path'));
 
 
-  const jsonSummaryCompareInput = core.getInput('json-summary-compare-path');
+	const jsonSummaryCompareInput = core.getInput('json-summary-compare-path');
 	let jsonSummaryComparePath;
-	if(jsonSummaryCompareInput) {
+	if (jsonSummaryCompareInput) {
 		jsonSummaryComparePath = path.resolve(workingDirectory, jsonSummaryCompareInput);
 	}
 
 	const name = core.getInput('name');
 
-  // ViteConfig is optional, as it is only required for thresholds. If no vite config is provided, we will not include thresholds in the final report.
+	// Get the user-defined pull-request number and perform input validation
+	const prNumber = core.getInput('pr-number');
+	let processedPrNumber: number | undefined = Number(prNumber);
+	if (!Number.isSafeInteger(processedPrNumber) || processedPrNumber <= 0) {
+		processedPrNumber = undefined;
+	}
+	if (processedPrNumber) {
+		core.info(`Received pull-request number: ${processedPrNumber}`);
+	}
+
+	// ViteConfig is optional, as it is only required for thresholds. If no vite config is provided, we will not include thresholds in the final report.
 	const viteConfigPath = await getViteConfigPath(workingDirectory, core.getInput("vite-config-path"));
 	const thresholds = viteConfigPath ? await parseCoverageThresholds(viteConfigPath) : {};
-	
+
 	return {
 		fileCoverageMode,
 		jsonFinalPath,
@@ -35,6 +45,7 @@ async function readOptions() {
 		name,
 		thresholds,
 		workingDirectory,
+		processedPrNumber,
 	}
 }
 

src/writeSummaryToPR.ts

@@ -5,17 +5,23 @@ const gitHubToken = core.getInput('github-token').trim();
 const octokit: Octokit = github.getOctokit(gitHubToken);
 const COMMENT_MARKER = (markerPostfix = 'root') => `<!-- vitest-coverage-report-marker-${markerPostfix} -->`;
 
-type Octokit =  ReturnType<typeof github.getOctokit>;
-const writeSummaryToPR = async ({ summary, markerPostfix }: { 
-	summary: typeof core.summary; 
-	markerPostfix?: string;
+type Octokit = ReturnType<typeof github.getOctokit>;
+const writeSummaryToPR = async ({ summary, markerPostfix, userDefinedPrNumber }: {
+  summary: typeof core.summary;
+  markerPostfix?: string;
+  userDefinedPrNumber?: number;
 }) => {
-  // If in the context of a pull-request, get the pull-request number
-  let pullRequestNumber = github.context.payload.pull_request?.number;
+  // The user-defined pull request number takes precedence
+  let pullRequestNumber = userDefinedPrNumber;
 
-  // This is to allow commenting on pull_request from forks
-  if (github.context.eventName === 'workflow_run') {
-    pullRequestNumber = await getPullRequestNumberFromTriggeringWorkflow(octokit);
+  if (!pullRequestNumber) {
+    // If in the context of a pull-request, get the pull-request number
+    pullRequestNumber = github.context.payload.pull_request?.number;
+
+    // This is to allow commenting on pull_request from forks
+    if (github.context.eventName === 'workflow_run') {
+      pullRequestNumber = await getPullRequestNumberFromTriggeringWorkflow(octokit);
+    }
   }
 
   if (!pullRequestNumber) {
@@ -71,23 +77,23 @@ async function getPullRequestNumberFromTriggeringWorkflow(octokit: Octokit): Pro
     run_id: originalWorkflowRunId,
   });
 
-  if(originalWorkflowRun.event !== 'pull_request') {
+  if (originalWorkflowRun.event !== 'pull_request') {
     core.info('The triggering workflow is not a pull-request. Skipping comment creation.');
     return undefined;
   }
 
   // When the actual pull-request is not coming from a fork, the pull_request object is correctly populated and we can shortcut here
-  if(originalWorkflowRun.pull_requests && originalWorkflowRun.pull_requests.length > 0) {
+  if (originalWorkflowRun.pull_requests && originalWorkflowRun.pull_requests.length > 0) {
     return originalWorkflowRun.pull_requests[0].number;
   }
 
   // When the actual pull-request is coming from a fork, the pull_request object is not populated (see https://github.com/orgs/community/discussions/25220)
   core.info(`Trying to find the pull-request for the triggering workflow run with id: ${originalWorkflowRunId} (${originalWorkflowRun.url}) with HEAD_SHA ${originalWorkflowRun.head_sha}...`)
-  
+
   // The way to find the pull-request in this scenario is to query all existing pull_requests on the target repository and find the one with the same HEAD_SHA as the original workflow run
   const pullRequest = await findPullRequest(octokit, originalWorkflowRun.head_sha);
 
-  if(!pullRequest) {
+  if (!pullRequest) {
     core.info('Could not find the pull-request for the triggering workflow run. Skipping comment creation.');
     return undefined;
   }
@@ -100,11 +106,11 @@ async function findPullRequest(octokit: Octokit, headSha: string) {
   core.startGroup(`Querying REST API for Pull-Requests.`);
   const pullRequestsIterator = octokit.paginate.iterator(
     octokit.rest.pulls.list, {
-      owner: github.context.repo.owner,
-      repo: github.context.repo.repo,
-      per_page: 30
+    owner: github.context.repo.owner,
+    repo: github.context.repo.repo,
+    per_page: 30
   });
-  
+
   for await (const { data: pullRequests } of pullRequestsIterator) {
     core.info(`Found ${pullRequests.length} pull-requests in this page.`)
     for (const pullRequest of pullRequests) {