test(*): make function async #4908

Author: Lipata

projects/igniteui-angular/src/lib/services/csv/csv-exporter-grid.spec.ts

@@ -54,7 +54,7 @@ describe('CSV Grid Exporter', () => {
     it('should export grid as displayed.', async () => {
         const currentGrid: IgxGridComponent = null;
 
-        TestMethods.testRawData(currentGrid, async (grid) => {
+        await TestMethods.testRawData(currentGrid, async (grid) => {
             const wrapper = await getExportedData(grid, options);
             wrapper.verifyData(wrapper.simpleGridData);
         });

projects/igniteui-angular/src/lib/services/excel/excel-exporter-grid.spec.ts

@@ -61,7 +61,7 @@ describe('Excel Exporter', () => {
 
         it('should export grid as displayed.', async () => {
             const currentGrid: IgxGridComponent = null;
-            TestMethods.testRawData(currentGrid, async (grid) => {
+            await TestMethods.testRawData(currentGrid, async (grid) => {
                 await exportAndVerify(grid, options, actualData.simpleGridData);
             });
         });

projects/igniteui-angular/src/lib/services/exporter-common/test-methods.spec.ts

@@ -6,13 +6,13 @@ import { IgxStringFilteringOperand } from '../../data-operations/filtering-condi
 
 export class TestMethods {
 
-    public static testRawData(myGrid: IgxGridComponent, action: (grid) => void) {
+    public static async testRawData(myGrid: IgxGridComponent, action: (grid) => Promise<void>) {
         const fix = TestBed.createComponent(GridIDNameJobTitleComponent);
         fix.detectChanges();
         myGrid = fix.componentInstance.grid;
 
         expect(myGrid.rowList.length).toEqual(10, 'Invalid number of rows initialized!');
-        action(myGrid);
+        await action(myGrid);
     }
 
     /* Creates an instance of GridDeclarationComponent; If filterParams is not specified,