feat(filter-paths): support sha input for merge queue event (#680)

src/helpers/filter-paths.ts

@@ -20,12 +20,23 @@ import { octokit } from '../octokit';
 export class FilterPaths extends HelperInputs {
   paths?: string;
   globs?: string;
+  sha?: string;
 }
 
-export const filterPaths = async ({ paths, globs }: FilterPaths) => {
+export const filterPaths = async ({ paths, globs, sha }: FilterPaths) => {
+  const prNumberFromSha = sha
+    ? (
+        await octokit.repos.listPullRequestsAssociatedWithCommit({
+          commit_sha: sha,
+          ...context.repo
+        })
+      ).data.find(Boolean)?.number
+    : undefined;
+  const pull_number = prNumberFromSha ?? context.issue.number;
+
   const { data } = await octokit.pulls.listFiles({
     per_page: 100,
-    pull_number: context.issue.number,
+    pull_number,
     ...context.repo
   });
 

test/helpers/filter-paths.test.ts

@@ -14,11 +14,17 @@ limitations under the License.
 import { Mocktokit } from '../types';
 import { filterPaths } from '../../src/helpers/filter-paths';
 import { octokit } from '../../src/octokit';
+import { context } from '@actions/github';
 
 jest.mock('@actions/core');
 jest.mock('@actions/github', () => ({
   context: { repo: { repo: 'repo', owner: 'owner' }, issue: { number: 123 } },
-  getOctokit: jest.fn(() => ({ rest: { pulls: { listFiles: jest.fn() } } }))
+  getOctokit: jest.fn(() => ({
+    rest: {
+      pulls: { listFiles: jest.fn() },
+      repos: { listPullRequestsAssociatedWithCommit: jest.fn(() => ({ data: [{ number: 789 }] })) }
+    }
+  }))
 }));
 
 describe('filterPaths', () => {
@@ -181,4 +187,25 @@ describe('filterPaths', () => {
 
     expect(result).toBe(true);
   });
+
+  it('should call listFiles with correct pull number if sha is provided', async () => {
+    await filterPaths({
+      paths,
+      sha: 'sha'
+    });
+
+    expect(octokit.pulls.listFiles).toHaveBeenCalledWith({
+      per_page: 100,
+      pull_number: 789,
+      ...context.repo
+    });
+  });
+
+  it('should not call listPullRequestsAssociatedWithCommit if sha is omitted', async () => {
+    await filterPaths({
+      paths
+    });
+
+    expect(octokit.repos.listPullRequestsAssociatedWithCommit).not.toHaveBeenCalled();
+  });
 });