Update test.

Author: tangbc

dist/index.js

@@ -113,6 +113,8 @@ function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterat
       },
       itemprops: {
         type: Function,
+
+        /* istanbul ignore next */
         default: function _default() {}
       }
     },

src/index.js

@@ -101,6 +101,7 @@
             },
             itemprops: {
                 type: Function,
+                /* istanbul ignore next */
                 default () {}
             }
         },

test/shape.test.js

@@ -76,9 +76,11 @@ describe(theme, () => {
     })
 
     it(`[${theme}] check update correct.`, () => {
+        const list = wrapper.find('.list')
+        const listEl = list.vm.$el
         const vmData = wrapper.vm.$data
-        const listEl = wrapper.find('.list').vm.$el
 
+        let itemFrags
         let expectOutsideHeight
 
         // change size and check shape.
@@ -96,7 +98,13 @@ describe(theme, () => {
         expect(listEl.style.height).toBe(expectOutsideHeight)
 
         vmData.bench = 66
-        const itemFrags = wrapper.findAll('.for-item')
+        itemFrags = wrapper.findAll('.for-item')
         expect(itemFrags.length).toBe(vmData.remian + 66)
+
+        vmData.items = getIndexList(7)
+        listEl.scrollTop = 1000 // over scroll.
+        list.trigger('scroll')
+        itemFrags = wrapper.findAll('.for-item')
+        expect(itemFrags.length).toBe(7)
     })
 })

test/variable.fn.test.js

@@ -51,7 +51,7 @@ describe(theme, () => {
 
         data () {
             return {
-                start: 0,
+                start: 5,
                 size: initSize,
                 remian: initRemian,
                 items: getVariableList(listCount)
@@ -79,7 +79,7 @@ describe(theme, () => {
         // no cache init.
         const list = wrapper.find('.list')
         const listDelta = list.vm.delta
-        expect(Object.keys(listDelta.varCache).length === 0).toBe(true)
+        expect(Object.keys(listDelta.varCache).length !== 0).toBe(true)
     })
 
     it(`[${theme}] check update.`, () => {