Merge branch '12.1.x' into sstoychev/add-row-api-12.1

Author: zdrawku

projects/igniteui-angular/src/lib/grids/grid/grid-cell-selection.spec.ts

@@ -667,7 +667,7 @@ describe('IgxGrid - Cell selection #grid', () => {
             } finally {
                 fix.detectChanges();
             }
-            expect(errorMessage).toEqual('Cannot read property \'visibleIndex\' of undefined');
+            expect(errorMessage).toContain('visibleIndex');
             expect(selectionChangeSpy).toHaveBeenCalledTimes(0);
             expect(grid.getSelectedData()).toEqual([]);
             expect(grid.getSelectedRanges()).toEqual([]);
@@ -699,7 +699,7 @@ describe('IgxGrid - Cell selection #grid', () => {
             } finally {
                 fix.detectChanges();
             }
-            expect(errorMessage).toEqual('Cannot read property \'visibleIndex\' of undefined');
+            expect(errorMessage).toContain('visibleIndex');
             GridSelectionFunctions.verifySelectedRange(grid, 1, 2, 0, 1);
             expect(selectionChangeSpy).toHaveBeenCalledTimes(0);
             expect(grid.getSelectedData()).toEqual(expectedData);
@@ -718,7 +718,7 @@ describe('IgxGrid - Cell selection #grid', () => {
             } finally {
                 fix.detectChanges();
             }
-            expect(errorMessage).toEqual('Cannot read property \'visibleIndex\' of undefined');
+            expect(errorMessage).toContain('visibleIndex');
             expect(selectionChangeSpy).toHaveBeenCalledTimes(0);
             expect(grid.getSelectedData()).toEqual([]);
             expect(grid.getSelectedRanges()).toEqual([]);