Javascript 使用redux saga测试计划,我有一个以函数作为参数的分派操作。这使得测试总是失败
我有一个传奇故事可以产生一个看跌期权。put的一个参数是函数对象 我只在相关的情况下复制了saga函数:Javascript 使用redux saga测试计划,我有一个以函数作为参数的分派操作。这使得测试总是失败,javascript,jestjs,redux-saga,redux-saga-test-plan,Javascript,Jestjs,Redux Saga,Redux Saga Test Plan,我有一个传奇故事可以产生一个看跌期权。put的一个参数是函数对象 我只在相关的情况下复制了saga函数: function* updateTaskTimeCancelledTimeRejectedSuccess(action) { const {payload} = action.data const tasks = yield select(getTasksSelector); const parent = yield call(findExistingTaskPare
function* updateTaskTimeCancelledTimeRejectedSuccess(action) {
const {payload} = action.data
const tasks = yield select(getTasksSelector);
const parent = yield call(findExistingTaskParent, tasks, action.data.taskUUID);
if (action.type === taskActions.updateTaskCancelledTimeActions.success) {
const currentValue = parent.taskGroup[action.data.taskUUID].time_cancelled;
if (currentValue === null) {
// only notify if marking rejected for the first time
const restoreActions = yield () => [taskActions.updateTaskCancelledTimeRequest(
action.data.taskUUID,
{time_cancelled: null}
)];
const viewLink = `/task/${encodeUUID(action.data.taskUUID)}`
yield put(displayInfoNotification("Task marked cancelled", restoreActions, viewLink))
这就是测试:
it("updates the task state with cancelled time and sends a notification", () => {
const action = {type: taskActions.updateTaskCancelledTimeActions.success, data: {taskUUID: "someUUID", time_cancelled: new Date().toISOString()}};
const restoreActions = () => [taskActions.updateTaskCancelledTimeRequest(
action.data.taskUUID,
{time_cancelled: null}
)];
const viewLink = `/task/${encodeUUID(action.data.taskUUID)}`
return expectSaga(testable.updateTaskTimeCancelledTimeRejectedSuccess, action)
.provide([
[select(getTasksSelector), {
tasksNew: {
1: {
someUUID: {
time_cancelled: null,
parent_id: 1
}
}
}
}]])
.put(displayInfoNotification("Task marked cancelled", restoreActions, viewLink))
.run()
})
})
这就是结果:
SagaTestError:
put expectation unmet:
Expected
--------
{ '@@redux-saga/IO': true,
combinator: false,
type: 'PUT',
payload:
{ channel: undefined,
action:
{ type: 'DISPLAY_INFO_NOTIFICATION',
message: 'Task marked cancelled',
restoreActions: [Function: restoreActions],
viewLink: '/task/0000000000000000000000' } } }
Actual:
------
1. { '@@redux-saga/IO': true,
combinator: false,
type: 'PUT',
payload:
{ channel: undefined,
action:
{ type: 'DISPLAY_INFO_NOTIFICATION',
message: 'Task marked cancelled',
restoreActions: [Function],
viewLink: '/task/0000000000000000000000' } } }
at node_modules/redux-saga-test-plan/lib/expectSaga/expectations.js:48:13
at node_modules/redux-saga-test-plan/lib/expectSaga/index.js:544:7
at Array.forEach (<anonymous>)
at checkExpectations (node_modules/redux-saga-test-plan/lib/expectSaga/index.js:543:18)
SagaTestError:
未满足期望:
预期
--------
{'@@redux saga/IO':对,
组合人:错,
键入:“PUT”,
有效载荷:
{频道:未定义,
行动:
{键入:“显示信息通知”,
消息:“标记为已取消的任务”,
restoreActions:[功能:restoreActions],
视图链接:'/task/0000000000000000'}}
实际:
------
1.{'@@redux saga/IO':对,
组合人:错,
键入:“PUT”,
有效载荷:
{频道:未定义,
行动:
{键入:“显示信息通知”,
消息:“标记为已取消的任务”,
恢复操作:[函数],
视图链接:'/task/0000000000000000'}}
在node_modules/redux saga测试计划/lib/expectSaga/expections.js:48:13
在节点_modules/redux saga测试计划/lib/expectSaga/index.js:544:7
在Array.forEach()处
在CheckExpections(node_modules/redux saga测试计划/lib/expectSaga/index.js:543:18)
很明显,由于restoreActions对象是另一个引用的函数,所以等式失败了。我不知道我该怎么做才能通过考试。我需要做些什么来验证这一传奇是否如我所预期的那样顺利进行?我不必验证函数的结果,只需验证displayInfoNotification是否发生
谢谢。为您的
恢复创建一个工厂函数
lambda,然后您可以模拟它进行测试
e、 g
//模块中的某个地方
const action restorefactory=(action)=>()=>[taskActions.updateTaskCanceledTimeRequest(action.data.taskUUID,{time\u cancelled:null}]
//在你的传奇中
产量投入(displayInfoNotification(“标记为已取消的任务”、actionRestoreFactory(操作)、viewLink))
//在你的测试中
从“/your/module”导入actionRestoreFactory
jest.mock('./your/module')
actionRestoreFactory.mockReturnValue(jest.fn())
//...
返回expectSaga(testable.UpdateTaskTimeCanceledTimeRejectedSuccess,操作)
.提供([…])
.put(displayInfoNotification(“标记为已取消的任务”、actionRestoreFactory(操作)、viewLink))
.run()
它可以工作。谢谢!很高兴你成功了!