chore(*): Add additional check for the headers

Author: gedinakova

projects/igniteui-angular/grids/tree-grid/src/tree-grid-integration.spec.ts

@@ -132,20 +132,22 @@ describe('IgxTreeGrid - Integration #tGrid', () => {
             const header = TreeGridFunctions.getHeaderCell(fix, 'ID').nativeElement;
             UIInteractions.simulatePointerEvent('pointerdown', header, 50, 35);
             fix.detectChanges();
-            await wait(100);
+            await wait();
 
             UIInteractions.simulatePointerEvent('pointermove', header, 56, 35);
             fix.detectChanges();
-            await wait(100);
+            await wait();
 
             UIInteractions.simulatePointerEvent('pointermove', header, 550, 20);
             fix.detectChanges();
-            await wait(100);
+            await wait();
 
             UIInteractions.simulatePointerEvent('pointerup', header, 550, 20);
             fix.detectChanges();
-            await wait(100);
+            await wait();
 
+            const headerCells = fix.debugElement.queryAll(By.css('igx-grid-header')).map(h => h.nativeElement.innerText.trim());
+            expect(headerCells[0]).toBe('Name');
             TreeGridFunctions.verifyTreeColumn(fix, 'Name', 4);
         });
 
@@ -321,20 +323,22 @@ describe('IgxTreeGrid - Integration #tGrid', () => {
             const header = TreeGridFunctions.getHeaderCell(fix, 'ID').nativeElement;
             UIInteractions.simulatePointerEvent('pointerdown', header, 50, 35);
             fix.detectChanges();
-            await wait(100);
+            await wait();
 
             UIInteractions.simulatePointerEvent('pointermove', header, 56, 35);
             fix.detectChanges();
-            await wait(100);
+            await wait();
 
             UIInteractions.simulatePointerEvent('pointermove', header, 550, 20);
             fix.detectChanges();
-            await wait(100);
+            await wait();
 
             UIInteractions.simulatePointerEvent('pointerup', header, 550, 20);
             fix.detectChanges();
-            await wait(100);
+            await wait();
 
+            const headerCells = fix.debugElement.queryAll(By.css('igx-grid-header')).map(h => h.nativeElement.innerText.trim());
+            expect(headerCells[0]).toBe('ParentID');
             TreeGridFunctions.verifyTreeColumn(fix, 'ParentID', 5);
         });