Fix <DataTable> may duplicate ids in its selection state

cypress/e2e/list.cy.js

@@ -170,6 +170,37 @@ describe('List Page', () => {
             );
         });
 
+        it('should not create duplicate selections when checking page after individual selections', () => {
+            cy.contains('1-10 of 13'); // wait for data
+            cy.get('input[type="checkbox"]').eq(1).click();
+            cy.get('input[type="checkbox"]').eq(2).click();
+            cy.contains('2 items selected');
+            ListPagePosts.toggleSelectAll();
+            cy.contains('10 items selected');
+            cy.get(ListPagePosts.elements.selectedItem).should(els =>
+                expect(els).to.have.length(10)
+            );
+        });
+
+        it('should handle uncheck and recheck without duplicates', () => {
+            cy.contains('1-10 of 13'); // wait for data
+            cy.get('input[type="checkbox"]').eq(1).click();
+            cy.get('input[type="checkbox"]').eq(2).click();
+            cy.get('input[type="checkbox"]').eq(3).click();
+            cy.contains('3 items selected');
+            ListPagePosts.toggleSelectAll();
+            cy.contains('10 items selected');
+            ListPagePosts.toggleSelectAll();
+            cy.get(ListPagePosts.elements.bulkActionsToolbar).should(
+                'not.be.visible'
+            );
+            ListPagePosts.toggleSelectAll();
+            cy.contains('10 items selected');
+            cy.get(ListPagePosts.elements.selectedItem).should(els =>
+                expect(els).to.have.length(10)
+            );
+        });
+
         it('should allow to trigger a custom bulk action on selected items', () => {
             cy.contains('1-10 of 13'); // wait for data
             ListPagePosts.toggleSelectAll();

packages/ra-ui-materialui/src/list/datatable/DataTable.spec.tsx

@@ -270,6 +270,33 @@ describe('DataTable', () => {
             fireEvent.click(checkboxes[4], { shiftKey: true });
             await screen.findByText('4 items selected');
         });
+        it('should not create duplicate selections when checking page after individual selections', async () => {
+            render(<Basic />);
+            const checkboxes = await screen.findAllByRole('checkbox');
+            fireEvent.click(checkboxes[1]);
+            fireEvent.click(checkboxes[2]);
+            await screen.findByText('2 items selected');
+            fireEvent.click(checkboxes[0]);
+            await screen.findByText('5 items selected');
+            const selectAllButton = await screen.findByText('Select all');
+            selectAllButton.click();
+            await screen.findByText('7 items selected');
+        });
+        it('should handle uncheck and recheck without duplicates', async () => {
+            render(<Basic />);
+            const checkboxes = await screen.findAllByRole('checkbox');
+            fireEvent.click(checkboxes[1]);
+            fireEvent.click(checkboxes[2]);
+            await screen.findByText('2 items selected');
+            fireEvent.click(checkboxes[0]);
+            await screen.findByText('5 items selected');
+            fireEvent.click(checkboxes[0]);
+            await waitFor(() => {
+                expect(screen.queryByText('items selected')).toBeNull();
+            });
+            fireEvent.click(checkboxes[0]);
+            await screen.findByText('5 items selected');
+        });
     });
     describe('isRowSelectable', () => {
         it('should allow to disable row selection', async () => {

packages/ra-ui-materialui/src/list/datatable/SelectPageCheckbox.tsx

@@ -1,12 +1,12 @@
-import * as React from 'react';
-import { useCallback } from 'react';
+import { Checkbox } from '@mui/material';
 import {
     useDataTableCallbacksContext,
     useDataTableDataContext,
     useDataTableSelectedIdsContext,
     useTranslate,
 } from 'ra-core';
-import { Checkbox } from '@mui/material';
+import * as React from 'react';
+import { useCallback } from 'react';
 
 export const SelectPageCheckbox = () => {
     const data = useDataTableDataContext();
@@ -22,11 +22,11 @@ export const SelectPageCheckbox = () => {
                 event.target.checked
                     ? selectedIds.concat(
                           data
-                              .filter(record =>
-                                  !selectedIds.includes(record.id) &&
-                                  isRowSelectable
-                                      ? isRowSelectable(record)
-                                      : true
+                              .filter(
+                                  record =>
+                                      !selectedIds.includes(record.id) &&
+                                      (!isRowSelectable ||
+                                          isRowSelectable(record))
                               )
                               .map(record => record.id)
                       )