test: add test to updateManualBackport

Author: alicelovescake

spec/fixtures/backport_pull_request.closed.json

@@ -12,6 +12,12 @@
       "head": {
         "ref": "123456789iuytdxcvbnjhfdriuyfedfgy54escghjnbg"
       },
+      "base": {
+        "ref": "main",
+        "repo": {
+          "default_branch": "main"
+        }
+      },
       "body": "Backport of #14\nSee that PR for details.\nNotes: <!-- One-line Change Summary Here-->",
       "created_at": "2018-11-01T17:29:51Z",
       "merged_at": "2018-11-01T17:30:11Z",

spec/fixtures/backport_pull_request.merged.json

@@ -12,6 +12,12 @@
       "head": {
         "ref": "123456789iuytdxcvbnjhfdriuyfedfgy54escghjnbg"
       },
+      "base": {
+        "ref": "main",
+        "repo": {
+          "default_branch": "main"
+        }
+      },
       "body": "Backport of #14\nSee that PR for details.\nNotes: <!-- One-line Change Summary Here-->",
       "created_at": "2018-11-01T17:29:51Z",
       "merged_at": "2018-11-01T17:30:11Z",

spec/index.spec.ts

@@ -392,6 +392,12 @@ Notes: <!-- One-line Change Summary Here-->`,
         head: {
           ref: '123456789iuytdxcvbnjhfdriuyfedfgy54escghjnbg',
         },
+        base: {
+          ref: 'main',
+          repo: {
+            default_branch: 'main',
+          },
+        },
         labels: [
           {
             color: 'ededed',
@@ -429,6 +435,12 @@ Notes: <!-- One-line Change Summary Here-->`,
         head: {
           ref: '123456789iuytdxcvbnjhfdriuyfedfgy54escghjnbg',
         },
+        base: {
+          ref: 'main',
+          repo: {
+            default_branch: 'main',
+          },
+        },
         labels: [
           {
             color: 'ededed',

spec/operations.spec.ts

@@ -5,6 +5,9 @@ import * as path from 'path';
 import simpleGit from 'simple-git';
 import { initRepo } from '../src/operations/init-repo';
 import { setupRemotes } from '../src/operations/setup-remotes';
+import { tagBackportReviewers } from '../src/utils';
+import { PRChange } from '../src/enums';
+import { updateManualBackport } from '../src/operations/update-manual-backport';
 
 let dirObject: { dir?: string } | null = null;
 
@@ -13,6 +16,22 @@ const saveDir = (o: { dir: string }) => {
   return o.dir;
 };
 
+const backportPRMergedEvent = require('./fixtures/backport_pull_request.merged.json');
+const backportPRClosedEvent = require('./fixtures/backport_pull_request.closed.json');
+const backportPROpenedEvent = require('./fixtures/backport_pull_request.opened.json');
+
+jest.mock('../src/utils', () => ({
+  tagBackportReviewers: jest.fn().mockReturnValue(Promise.resolve()),
+  isSemverMinorPR: jest.fn().mockReturnValue(false),
+}));
+
+jest.mock('../src/utils/label-utils', () => ({
+  labelExistsOnPR: jest.fn().mockResolvedValue(true),
+  getSemverLabel: jest.fn().mockResolvedValue(false),
+  addLabels: jest.fn(),
+  removeLabel: jest.fn(),
+}));
+
 describe('runner', () => {
   jest.setTimeout(30000);
   console.error = jest.fn();
@@ -101,4 +120,46 @@ describe('runner', () => {
       }
     });
   });
+
+  describe('updateManualBackport()', () => {
+    let context: any;
+    let octokit = {
+      pulls: {
+        get: jest.fn().mockReturnValue(Promise.resolve({})),
+      },
+      issues: {
+        createComment: jest.fn().mockReturnValue(Promise.resolve({})),
+        listComments: jest.fn().mockReturnValue(Promise.resolve({ data: [] })),
+      },
+    };
+
+    it('tags reviewers on manual backport creation', async () => {
+      context = {
+        ...backportPROpenedEvent,
+        octokit,
+        repo: jest.fn(),
+      };
+      await updateManualBackport(context, PRChange.OPEN, 1234);
+      expect(tagBackportReviewers).toHaveBeenCalled();
+    });
+
+    it('does not tag reviewers on merged PRs', async () => {
+      context = {
+        ...backportPRMergedEvent,
+        octokit,
+        repo: jest.fn(),
+      };
+      await updateManualBackport(context, PRChange.MERGE, 1234);
+      expect(tagBackportReviewers).not.toHaveBeenCalled();
+    });
+    it('does not tag reviewers on closed PRs', async () => {
+      context = {
+        ...backportPRClosedEvent,
+        octokit,
+        repo: jest.fn(),
+      };
+      await updateManualBackport(context, PRChange.CLOSE, 1234);
+      expect(tagBackportReviewers).not.toHaveBeenCalled();
+    });
+  });
 });