Redux 如何测试从嵌套减速器中重新选择选择器?
我用重选库创建了一个简单的重选选择器。选择器获取数组中的最后一个对象 在中,测试示例是使用Assert库而不是Expect库构建的,但是我的应用程序源于React Create app,所以我包含了Expect和Jest 无论如何,不管我如何编写选择器测试,它都会挂在嵌套的reducer上:Redux 如何测试从嵌套减速器中重新选择选择器?,redux,expect,create-react-app,reselect,Redux,Expect,Create React App,Reselect,我用重选库创建了一个简单的重选选择器。选择器获取数组中的最后一个对象 在中,测试示例是使用Assert库而不是Expect库构建的,但是我的应用程序源于React Create app,所以我包含了Expect和Jest 无论如何,不管我如何编写选择器测试,它都会挂在嵌套的reducer上:TypeError:无法读取未定义的的属性“arrayOfObj” Selectors.js import { createSelector } from 'reselect' const getArray
TypeError:无法读取未定义的
的属性“arrayOfObj”
Selectors.js
import { createSelector } from 'reselect'
const getArrayOfObj = (state) => state.reducer1.arrayOfObj
export const getLastObj = createSelector(
[ getArrayOfObj ],
(arrayOfObj) => {
return arrayOfObj[arrayOfObj.length-1]
}
)
import * as selectors from 'Selectors'
const mockState = {
reducer1: {
arrayOfObj: [
{id: 1},
{id: 2},
{id: 3},
{id: 4},
],
...
},
reducer2: {
...
}
}
describe('selectors', () => {
it('getLastObj should get last obj in array', () => {
expect(selectors.getLastObj(mockState)).toDeepEqual({id: 4});
});
});
选择器.test.js
import { createSelector } from 'reselect'
const getArrayOfObj = (state) => state.reducer1.arrayOfObj
export const getLastObj = createSelector(
[ getArrayOfObj ],
(arrayOfObj) => {
return arrayOfObj[arrayOfObj.length-1]
}
)
import * as selectors from 'Selectors'
const mockState = {
reducer1: {
arrayOfObj: [
{id: 1},
{id: 2},
{id: 3},
{id: 4},
],
...
},
reducer2: {
...
}
}
describe('selectors', () => {
it('getLastObj should get last obj in array', () => {
expect(selectors.getLastObj(mockState)).toDeepEqual({id: 4});
});
});
通过将
expect
语句从.toDeepEqual()
更改为.toEqual()