Fix COMPONENT ERROR: e.cells[o] is undefined

packages/roosterjs-editor-dom/lib/table/isWholeTableSelected.ts

@@ -13,7 +13,11 @@ export default function isWholeTableSelected(vTable: VTable, selection: TableSel
     }
     const { firstCell, lastCell } = selection;
     const rowsLength = vTable.cells.length - 1;
-    const colIndex = vTable.cells[rowsLength].length - 1;
+    const rowCells = vTable.cells[rowsLength];
+    if (!rowCells) {
+        return false;
+    }
+    const colIndex = rowCells.length - 1;
     const firstX = firstCell.x;
     const firstY = firstCell.y;
     const lastX = lastCell.x;

packages/roosterjs-editor-dom/test/table/isWholeTableSelectedTest.ts

@@ -0,0 +1,91 @@
+import * as isWholeTableSelectedFile from '../../lib/table/isWholeTableSelected';
+import VTable from '../../lib/table/VTable';
+
+describe('isWholeTableSelectedTest', () => {
+    it('Table without rows', () => {
+        const table = document.createElement('table');
+        spyOn(isWholeTableSelectedFile, 'default').and.callThrough();
+
+        const vTable = new VTable(table);
+        const result = isWholeTableSelectedFile.default(vTable, {
+            firstCell: {
+                x: 0,
+                y: 0,
+            },
+            lastCell: {
+                x: 0,
+                y: 0,
+            },
+        });
+
+        expect(result).toBeFalse();
+        expect(isWholeTableSelectedFile.default).not.toThrow();
+    });
+
+    it('Table with single row and no cells', () => {
+        const table = document.createElement('table');
+        table.appendChild(document.createElement('tr'));
+        spyOn(isWholeTableSelectedFile, 'default').and.callThrough();
+
+        const vTable = new VTable(table);
+        const result = isWholeTableSelectedFile.default(vTable, {
+            firstCell: {
+                x: 0,
+                y: 0,
+            },
+            lastCell: {
+                x: 0,
+                y: 0,
+            },
+        });
+
+        expect(result).toBeFalse();
+        expect(isWholeTableSelectedFile.default).not.toThrow();
+    });
+
+    it('Table 1x2 is whole selected', () => {
+        const table = document.createElement('table');
+        const tr = document.createElement('tr');
+        tr.append(document.createElement('td'), document.createElement('td'));
+        table.appendChild(tr);
+        spyOn(isWholeTableSelectedFile, 'default').and.callThrough();
+
+        const vTable = new VTable(table);
+        const result = isWholeTableSelectedFile.default(vTable, {
+            firstCell: {
+                x: 0,
+                y: 0,
+            },
+            lastCell: {
+                x: 1,
+                y: 0,
+            },
+        });
+
+        expect(result).toBeTrue();
+        expect(isWholeTableSelectedFile.default).not.toThrow();
+    });
+
+    it('Table 1x2 is not whole selected', () => {
+        const table = document.createElement('table');
+        const tr = document.createElement('tr');
+        tr.append(document.createElement('td'), document.createElement('td'));
+        table.appendChild(tr);
+        spyOn(isWholeTableSelectedFile, 'default').and.callThrough();
+
+        const vTable = new VTable(table);
+        const result = isWholeTableSelectedFile.default(vTable, {
+            firstCell: {
+                x: 0,
+                y: 0,
+            },
+            lastCell: {
+                x: 0,
+                y: 0,
+            },
+        });
+
+        expect(result).toBeFalse();
+        expect(isWholeTableSelectedFile.default).not.toThrow();
+    });
+});