chore(*): solving lint errors

Author: ChronosSF

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

@@ -481,7 +481,7 @@ describe('IgxGrid Component Tests #grid', () => {
             expect(parseInt(window.getComputedStyle(gridBody.nativeElement).height, 10)).toBeGreaterThan(500);
         }));
 
-        fit('should render loading indicator when loading is enabled and the grid has empty filtering pre-applied', fakeAsync(() => {
+        it('should render loading indicator when loading is enabled and the grid has empty filtering pre-applied', fakeAsync(() => {
             const fixture = TestBed.createComponent(IgxGridTestComponent);
             const grid = fixture.componentInstance.grid;
             grid.filter('index', 0, IgxNumberFilteringOperand.instance().condition('equals'), true);
@@ -490,7 +490,7 @@ describe('IgxGrid Component Tests #grid', () => {
             tick(16);
 
             const gridBody = fixture.debugElement.query(By.css(TBODY_CLASS));
-            let loadingIndicator = gridBody.query(By.css('.igx-grid__loading'));
+            const loadingIndicator = gridBody.query(By.css('.igx-grid__loading'));
             const domGrid = fixture.debugElement.query(By.css('igx-grid')).nativeElement;
 
             // make sure default width/height are applied when there is no data