buffer cleanup spec: add indexes check

Author: dhilt

test/AdapterTestsSpec.js

@@ -1226,7 +1226,9 @@ describe('uiScroll', function () {
       runTest(scrollSettings,
         function (viewport, scope) {
           expect(scope.adapter.bufferFirst).toBe('item1');
+          expect(Helper.getFirstRow(viewport)).toBe('1: item1');
           expect(scope.adapter.bufferLast).toBe('item10');
+          expect(Helper.getLastRow(viewport)).toBe('10: item10');
           expect(scope.adapter.bufferLength).toBe(10);
         }
       );
@@ -1239,7 +1241,9 @@ describe('uiScroll', function () {
           viewport.trigger('scroll');
 
           expect(scope.adapter.bufferFirst).toBe('item5');
+          expect(Helper.getFirstRow(viewport)).toBe('5: item5');
           expect(scope.adapter.bufferLast).toBe('item20');
+          expect(Helper.getLastRow(viewport)).toBe('20: item20');
           expect(scope.adapter.bufferLength).toBe(16);
         }
       );

test/BufferCleanupSpec.js

@@ -51,15 +51,17 @@ describe('uiScroll', function () {
         function (viewport, scope) {
           expect(scope.adapter.isBOF()).toBe(false);
           expect(scope.adapter.isEOF()).toBe(true);
+          expect(scope.adapter.bufferFirst).toBe('item0');
+          expect(scope.adapter.bufferLast).toBe('item6');
 
           // remove items 0..6 items form -5..6 datasource
           cleanBuffer(scope, { immutableTop: true });
 
           // result [-5..-1]
           expect(scope.adapter.isBOF()).toBe(true);
           expect(scope.adapter.isEOF()).toBe(true);
-          expect(scope.adapter.bufferFirst).toBe('item-5');
-          expect(scope.adapter.bufferLast).toBe('item-1');
+          expect(Helper.getFirstRow(viewport)).toBe('-5: item-5');
+          expect(Helper.getLastRow(viewport)).toBe('-1: item-1');
           expect(scope.adapter.bufferLength).toBe(5);
         }
       );
@@ -73,15 +75,17 @@ describe('uiScroll', function () {
         function (viewport, scope) {
           expect(scope.adapter.isBOF()).toBe(false);
           expect(scope.adapter.isEOF()).toBe(false);
+          expect(scope.adapter.bufferFirst).toBe('item-4');
+          expect(scope.adapter.bufferLast).toBe('item1');
 
           // remove items -4..1 items form -5..6 datasource
           cleanBuffer(scope, { immutableTop: true });
 
           // result [-5, 2, 3, 4]
           expect(scope.adapter.isBOF()).toBe(true);
           expect(scope.adapter.isEOF()).toBe(false);
-          expect(scope.adapter.bufferFirst).toBe('item-5');
-          expect(scope.adapter.bufferLast).toBe('item4');
+          expect(Helper.getFirstRow(viewport)).toBe('-5: item-5');
+          expect(Helper.getLastRow(viewport)).toBe('-2: item4');
           expect(scope.adapter.bufferLength).toBe(4);
         }
       );
@@ -95,19 +99,22 @@ describe('uiScroll', function () {
         function (viewport, scope) {
           expect(scope.adapter.isBOF()).toBe(true);
           expect(scope.adapter.isEOF()).toBe(false);
+          expect(scope.adapter.bufferFirst).toBe('item-5');
+          expect(scope.adapter.bufferLast).toBe('item1');
 
           // remove items -5..1 items form -5..6 datasource
           cleanBuffer(scope);
 
           // result [2..6]
           expect(scope.adapter.isBOF()).toBe(true);
           expect(scope.adapter.isEOF()).toBe(true);
-          expect(scope.adapter.bufferFirst).toBe('item2');
-          expect(scope.adapter.bufferLast).toBe('item6');
+          expect(Helper.getFirstRow(viewport)).toBe('2: item2');
+          expect(Helper.getLastRow(viewport)).toBe('6: item6');
           expect(scope.adapter.bufferLength).toBe(5);
         }
       );
     });
+
   });
 
 });