我有一个 reducer 测试通过了,但最后抛出了这个奇怪的错误:
console.error node_modules/redux/lib/utils/warning.js:14
No reducer provided for key "newProducts"
src/reducer/index.ts
import newLineItemReducer from "./newLineItemReducer";
import renewedLineItemReducer from "./renewedLineItemReducer";
export interface LineItemState{
renewedProducts: LineItem[]
newProducts: LineItem[]
}
//used by both reducers
export interface LineItem{
...
}
// used by both "new" and "renewed" slice reducers
export function sharedFunction1() {
...
}
export default combineReducers<LineItemState>({
renewedProducts: renewedLineItemReducer,
newProducts: newLineItemReducer
});
src/reducer/newLineItemReducer.ts
import {LineItem, sharedFunction1 } from "./";
type Action = ...;
const newLineItemReducer =
(state: LineItem[] = [], action: Action): LineItem[] => {
switch (action.type) {
case ...:
sharedFunction1(state, action.foo);
}
}
export default newLineItemReducer;
测试/newLineItemReducer.spec.ts
import newLineItemReducer from "@src/reducers/newLineItemReducer";
test("foo", () => {
let state = //
let action = //
const updatedState = newLineItemReducer(state, action);
...
});
奇怪的是没有代码实际从 index 调用根 reducer。我的测试是直接调用切片“newLineItemReducer”。似乎只是从 reducer/index.ts
导入共享接口(interface)和 case 函数的行为导致了问题(如果我删除 combineReducer
导出没有错误)?
最佳答案
我遇到了同样的问题,正如@michael-radionov 在上面的评论部分中提到的,这是一个循环导入,我使用了 circular-dependency-plugin跟踪这些循环导入的插件,有关插件使用的更多信息可以在插件仓库或以下 article 中找到
关于typescript - "No reducer provided for key X"console.error in redux jest 测试,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47441905/