[NoQA] test(reassure): get last visible action

tests/perf-test/ReportActionsUtils.perf-test.js

@@ -0,0 +1,93 @@
+import Onyx from 'react-native-onyx';
+import {measureFunction} from 'reassure';
+import _ from 'underscore';
+import CONST from '../../src/CONST';
+import * as ReportActionsUtils from '../../src/libs/ReportActionsUtils';
+import ONYXKEYS from '../../src/ONYXKEYS';
+import * as LHNTestUtils from '../utils/LHNTestUtils';
+import waitForBatchedUpdates from '../utils/waitForBatchedUpdates';
+
+jest.setTimeout(60000);
+
+beforeAll(() =>
+    Onyx.init({
+        keys: ONYXKEYS,
+        safeEvictionKeys: [ONYXKEYS.COLLECTION.REPORT_ACTIONS],
+        registerStorageEventListener: () => {},
+    }),
+);
+
+// Clear out Onyx after each test so that each test starts with a clean slate
+afterEach(() => {
+    Onyx.clear();
+});
+
+const getMockedReportActionsMap = (reportsLength = 10, actionsPerReportLength = 100) => {
+    const mockReportActions = Array.from({length: actionsPerReportLength}, (_reportAction, i) => {
+        const reportActionKey = i + 1;
+        const email = `actor+${reportActionKey}@mail.com`;
+        const reportAction = LHNTestUtils.getFakeReportAction(email);
+
+        return {[reportActionKey]: reportAction};
+    });
+
+    const reportKeysMap = Array.from({length: reportsLength}, (_report, i) => {
+        const key = i + 1;
+
+        return {[`${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${key}`]: _.assign({}, ...mockReportActions)};
+    });
+
+    return _.assign({}, ...reportKeysMap);
+};
+
+const mockedReportActionsMap = getMockedReportActionsMap(2, 10000);
+
+/**
+ * This function will be executed 20 times and the average time will be used on the comparison.
+ * It will fail based on the CI configuration around Reassure:
+ * @see /.github/workflows/reassurePerformanceTests.yml
+ *
+ * Max deviation on the duration is set to 20% at the time of writing.
+ *
+ * More on the measureFunction API:
+ * @see https://callstack.github.io/reassure/docs/api#measurefunction-function
+ */
+test('getLastVisibleAction on 10k reportActions', async () => {
+    const reportId = '1';
+
+    await Onyx.multiSet({
+        ...mockedReportActionsMap,
+    });
+    await waitForBatchedUpdates();
+    await measureFunction(() => ReportActionsUtils.getLastVisibleAction(reportId), {runs: 20});
+});
+
+test('getLastVisibleAction on 10k reportActions with actionsToMerge', async () => {
+    const reportId = '1';
+    const parentReportActionId = '1';
+    const fakeParentAction = mockedReportActionsMap[`${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${reportId}`][parentReportActionId];
+    const actionsToMerge = {
+        [parentReportActionId]: {
+            pendingAction: CONST.RED_BRICK_ROAD_PENDING_ACTION.UPDATE,
+            previousMessage: fakeParentAction.message,
+            message: [
+                {
+                    translationKey: '',
+                    type: 'COMMENT',
+                    html: '',
+                    text: '',
+                    isEdited: true,
+                    isDeletedParentAction: true,
+                },
+            ],
+            errors: null,
+            linkMetaData: [],
+        },
+    };
+
+    await Onyx.multiSet({
+        ...mockedReportActionsMap,
+    });
+    await waitForBatchedUpdates();
+    await measureFunction(() => ReportActionsUtils.getLastVisibleAction(reportId, actionsToMerge), {runs: 20});
+});

tests/utils/LHNTestUtils.js

@@ -130,6 +130,7 @@ function getFakeReportAction(actor = 'email1@test.com', millisecondsInThePast =
         actor,
         actorAccountID: 1,
         reportActionID: `${++lastFakeReportActionID}`,
+        actionName: CONST.REPORT.ACTIONS.TYPE.CREATED,
         shouldShow: true,
         timestamp,
         reportActionTimestamp: timestamp,
@@ -142,6 +143,55 @@ function getFakeReportAction(actor = 'email1@test.com', millisecondsInThePast =
         ],
         whisperedToAccountIDs: [],
         automatic: false,
+        message: [
+            {
+                type: 'COMMENT',
+                html: 'hey',
+                text: 'hey',
+                isEdited: false,
+                whisperedTo: [],
+                isDeletedParentAction: false,
+                reactions: [
+                    {
+                        emoji: 'heart',
+                        users: [
+                            {
+                                accountID: 1,
+                                skinTone: -1,
+                            },
+                        ],
+                    },
+                ],
+            },
+        ],
+        originalMessage: {
+            childReportID: `${++lastFakeReportActionID}`,
+            emojiReactions: {
+                heart: {
+                    createdAt: '2023-08-28 15:27:52',
+                    users: {
+                        1: {
+                            skinTones: {
+                                '-1': '2023-08-28 15:27:52',
+                            },
+                        },
+                    },
+                },
+            },
+            html: 'hey',
+            lastModified: '2023-08-28 15:28:12.432',
+            reactions: [
+                {
+                    emoji: 'heart',
+                    users: [
+                        {
+                            accountID: 1,
+                            skinTone: -1,
+                        },
+                    ],
+                },
+            ],
+        },
     };
 }