Add some tests.

Author: MKirova

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

@@ -118,5 +118,106 @@ describe('Basic IgxPivotGrid #pivotGrid', () => {
              const expected = ['USA'];
              expect(colHeaders).toEqual(expected);
         });
+
+        it('should sort on column for single row dimension.', () => {
+            const pivotGrid = fixture.componentInstance.pivotGrid;
+            const headerCell = GridFunctions.getColumnHeader('USA-UnitsSold', fixture);
+
+            // sort asc
+            GridFunctions.clickHeaderSortIcon(headerCell);
+            fixture.detectChanges();
+            expect(pivotGrid.sortingExpressions.length).toBe(1);
+            let expectedOrder = [829, undefined, 240, 293, 296];
+            let columnValues = pivotGrid.dataView.map(x => x['USA-UnitsSold']);
+            expect(columnValues).toEqual(expectedOrder);
+
+            // sort desc
+            GridFunctions.clickHeaderSortIcon(headerCell);
+            fixture.detectChanges();
+            expect(pivotGrid.sortingExpressions.length).toBe(1);
+            expectedOrder = [829, 296, 293, 240, undefined];
+            columnValues = pivotGrid.dataView.map(x => x['USA-UnitsSold']);
+            expect(columnValues).toEqual(expectedOrder);
+
+            // remove sort
+            GridFunctions.clickHeaderSortIcon(headerCell);
+            fixture.detectChanges();
+            expect(pivotGrid.sortingExpressions.length).toBe(0);
+            expectedOrder = [829, 296, undefined, 293, 240];
+            columnValues = pivotGrid.dataView.map(x => x['USA-UnitsSold']);
+            expect(columnValues).toEqual(expectedOrder);
+        });
+
+        it('should sort on column for all sibling dimensions.', () => {
+            const pivotGrid = fixture.componentInstance.pivotGrid;
+            pivotGrid.height = '1500px';
+            pivotGrid.pivotConfiguration.rows = [
+                {
+                    memberName: 'ProductCategory',
+                    enabled: true
+                },
+                {
+                    memberName: 'SellerName',
+                    enabled: true
+                }
+            ];
+            // add a bit more data to sort.
+            pivotGrid.data = [
+                {
+                    ProductCategory: 'Clothing', UnitPrice: 12.81, SellerName: 'Stanley',
+                    Country: 'Bulgaria', Date: '01/01/2021', UnitsSold: 282
+                },
+                {
+                    ProductCategory: 'Clothing', UnitPrice: 49.57, SellerName: 'Elisa',
+                    Country: 'USA', Date: '01/05/2019', UnitsSold: 296
+                },
+                {
+                    ProductCategory: 'Bikes', UnitPrice: 3.56, SellerName: 'Lydia',
+                    Country: 'Uruguay', Date: '01/06/2020', UnitsSold: 68
+                },
+                {
+                    ProductCategory: 'Accessories', UnitPrice: 85.58, SellerName: 'David',
+                    Country: 'USA', Date: '04/07/2021', UnitsSold: 293
+                },
+                {
+                    ProductCategory: 'Components', UnitPrice: 18.13, SellerName: 'John',
+                    Country: 'USA', Date: '12/08/2021', UnitsSold: 240
+                },
+                {
+                    ProductCategory: 'Clothing', UnitPrice: 68.33, SellerName: 'Larry',
+                    Country: 'Uruguay', Date: '05/12/2020', UnitsSold: 456
+                },
+                {
+                    ProductCategory: 'Clothing', UnitPrice: 16.05, SellerName: 'Walter',
+                    Country: 'Bulgaria', Date: '02/19/2020', UnitsSold: 492
+                },
+                {
+                    ProductCategory: 'Clothing', UnitPrice: 16.05, SellerName: 'Elisa',
+                    Country: 'Bulgaria', Date: '02/19/2020', UnitsSold: 267
+                },
+                {
+                    ProductCategory: 'Clothing', UnitPrice: 16.05, SellerName: 'Larry',
+                    Country: 'Bulgaria', Date: '02/19/2020', UnitsSold: 100
+                }
+            ];
+            pivotGrid.pipeTrigger++;
+            fixture.detectChanges();
+            const headerCell = GridFunctions.getColumnHeader('Bulgaria-UnitsSold', fixture);
+            // sort asc
+            GridFunctions.clickHeaderSortIcon(headerCell);
+            fixture.detectChanges();
+            expect(pivotGrid.sortingExpressions.length).toBe(1);
+            let expectedOrder = [undefined, undefined, undefined, 100, 267, 282, 492];
+            let columnValues = pivotGrid.dataView.map(x => x['Bulgaria-UnitsSold']);
+            expect(columnValues).toEqual(expectedOrder);
+
+             // sort desc
+             GridFunctions.clickHeaderSortIcon(headerCell);
+             fixture.detectChanges();
+             expect(pivotGrid.sortingExpressions.length).toBe(1);
+             expectedOrder = [492, 282, 267, 100, undefined, undefined, undefined];
+             columnValues = pivotGrid.dataView.map(x => x['Bulgaria-UnitsSold']);
+             expect(columnValues).toEqual(expectedOrder);
+        });
     });
 });