feat: add assignees feature

Author: marijoo

README.md

@@ -33,6 +33,7 @@ As mentioned above is this README, a core reason why this Action exists is to "c
 | `ignore_label` | The label to ignore when combining PRs | `"nocombine"` | `true` |
 | `select_label` | The label which marks PRs that should be combined. Leave empty to consider all PRs. | `""` | `false` |
 | `labels` | A comma separated list of labels to add to the combined PR - Example: `dependencies,combined-pr,etc` | `""` | `false` |
+| `assignees` | A comma separated list of assignees the combined PR is assigned to - Example: `octocat` | `""` | `false` |
 | `autoclose` | Whether or not to close combined PRs if the combined PR is merged - can be `"true"` or `"false"` | `"true"` | `false` |
 | `update_branch` | Whether or not to update the combined branch with the latest changes from the base branch after creating the combined pull request | `"true"` | `false` |
 | `create_from_scratch` | Whether or not to start from a clean base branch when (re)creating the combined PR | `"false"` | `false` |

__tests__/main.test.js

@@ -49,6 +49,7 @@ beforeEach(() => {
   process.env.GITHUB_REPOSITORY = 'test-owner/test-repo'
   process.env.INPUT_MIN_COMBINE_NUMBER = '2'
   process.env.INPUT_LABELS = ''
+  process.env.INPUT_ASSIGNEES = ''
   process.env.INPUT_AUTOCLOSE = 'true'
   process.env.INPUT_UPDATE_BRANCH = 'true'
   process.env.INPUT_CREATE_FROM_SCRATCH = 'false'
@@ -1773,6 +1774,88 @@ test('runs the action and fails to create a working branch', async () => {
   expect(setFailedMock).toHaveBeenCalledWith('Failed to create working branch')
 })
 
+test('successfully runs the action and sets assignees', async () => {
+  jest.spyOn(github, 'getOctokit').mockImplementation(() => {
+    return {
+      paginate: jest.fn().mockImplementation(() => {
+        return [
+          buildPR(1, 'dependabot-1', ['question']),
+          buildPR(2, 'dependabot-2')
+        ]
+      }),
+      graphql: jest.fn().mockImplementation((_query, params) => {
+        switch (params.pull_number) {
+          case 1:
+          case 2:
+          case 3:
+            return buildStatusResponse('APPROVED', 'SUCCESS')
+          case 4:
+            return buildStatusResponse('APPROVED', 'FAILURE')
+          case 5:
+            return buildStatusResponse(null, 'SUCCESS')
+          case 6:
+            return buildStatusResponse('REVIEW_REQUIRED', 'SUCCESS')
+          default:
+            throw new Error(
+              `params.pull_number of ${params.pull_number} is not configured.`
+            )
+        }
+      }),
+      rest: {
+        issues: {
+          addAssignees: jest.fn().mockReturnValueOnce({
+            data: {}
+          }),
+          addLabels: jest.fn().mockReturnValueOnce({
+            data: {}
+          })
+        },
+        git: {
+          createRef: jest.fn().mockReturnValueOnce({
+            data: {}
+          }),
+          updateRef: jest.fn().mockReturnValueOnce({
+            data: {}
+          }),
+          getRef: jest.fn().mockReturnValueOnce({
+            data: {
+              object: {
+                sha: randomSha1()
+              }
+            }
+          })
+        },
+        repos: {
+          // mock the first value of merge to be a success and the second to be an exception
+          merge: jest.fn().mockReturnValueOnce({
+            data: {
+              merged: true
+            }
+          })
+        },
+        pulls: {
+          create: jest.fn().mockReturnValueOnce({
+            data: {
+              number: 100,
+              html_url: 'https://github.com/test-owner/test-repo/pull/100'
+            }
+          })
+        }
+      }
+    }
+  })
+
+  process.env.INPUT_REVIEW_REQUIRED = 'true'
+  process.env.INPUT_ASSIGNEES = 'octocat ,another-user,  kolossal'
+  expect(await run()).toBe('success')
+
+  expect(infoMock).toHaveBeenCalledWith(
+    `Adding assignees to combined PR: octocat,another-user,kolossal`
+  )
+
+  expect(setOutputMock).toHaveBeenCalledWith('pr_number', 100)
+})
+
 function buildStatusResponse(reviewDecision, ciStatus) {
   return {
     repository: {

action.yml

@@ -53,6 +53,10 @@ inputs:
     description: A comma seperated list of labels to add to the combined PR
     required: false
     default: ""
+  assignees:
+    description: A comma seperated list of assignees to add to the combined PR
+    required: false
+    default: ""
   autoclose:
     description: Whether or not to close combined PRs if the combined PR is merged
     required: false

dist/index.js

@@ -17,6 +17,7 @@ export async function run() {
   const ignoreLabel = core.getInput('ignore_label')
   const selectLabel = core.getInput('select_label')
   const labels = core.getInput('labels').trim()
+  const assignees = core.getInput('assignees').trim()
   const token = core.getInput('github_token', {required: true})
   const prTitle = core.getInput('pr_title', {required: true})
   const prBodyHeader = core.getInput('pr_body_header', {required: true})
@@ -295,6 +296,22 @@ export async function run() {
     }
   }
 
+  if (assignees !== '') {
+    // split and trim assignees
+    const assigneesArray = assignees.split(',').map(label => label.trim())
+
+    // add assignees to the combined PR if specified
+    if (assigneesArray.length > 0) {
+      core.info(`Adding assignees to combined PR: ${assigneesArray}`)
+      await octokit.rest.issues.addAssignees({
+        owner: context.repo.owner,
+        repo: context.repo.repo,
+        issue_number: pullRequest.data.number,
+        assignees: assigneesArray
+      })
+    }
+  }
+
   // lastly, if the pull request's branch can be updated cleanly, update it
   if (updateBranch === true) {
     core.info('Attempting to update branch')