Mailspring/spec-nylas/tasks/mark-message-read-spec.coffee
Ben Gotow 343bb3163b feat(offline-mode, undo-redo): Tasks handle network errors better and retry, undo/redo based on tasks
Summary:
This diff does a couple things:

- Undo redo with a new undo/redo store that maintains it's own queue of undo/redo tasks. This queue is separate from the TaskQueue because not all tasks should be considered for undo history! Right now just the AddRemoveTagsTask is undoable.

- NylasAPI.makeRequest now returns a promise which resolves with the result or rejects with an error. For things that still need them, there's still `success` and `error` callbacks. I also added `started:(req) ->` which allows you to get the underlying request.

- Aborting a NylasAPI request now makes it call it's error callback / promise reject.

- You can now run code after perform local has completed using this syntax:

```
    task = new AddRemoveTagsTask(focused, ['archive'], ['inbox'])
    task.waitForPerformLocal().then ->
      Actions.setFocus(collection: 'thread', item: nextFocus)
      Actions.setCursorPosition(collection: 'thread', item: nextKeyboard)
    Actions.queueTask(task)
```

- In specs, you can now use `advanceClock` to get through a Promise.then/catch/finally. Turns out it was using something low level and not using setTimeout(0).

- The TaskQueue uses promises better and defers a lot of the complexity around queueState for performLocal/performRemote to a task subclass called APITask. APITask implements "perform" and breaks it into "performLocal" and "performRemote".

- All tasks either resolve or reject. They're always removed from the queue, unless they resolve with Task.Status.Retry, which means they internally did a .catch (err) => Promise.resolve(Task.Status.Retry) and they want to be run again later.

- API tasks retry until they succeed or receive a NylasAPI.PermanentErrorCode (400,404,500), in which case they revert and finish.

- The AddRemoveTags Task can now take more than one thread! This is super cool because you can undo/redo a bulk action and also because we'll probably have a bulk tag modification API endpoint soon.

Getting undo / redo working revealed that the thread versioning system we built isn't working because the server was incrementing things by more than 1 at a time. Now we count the number of unresolved "optimistic" changes we've made to a given model, and only accept the server's version of it once the number of optimistic changes is back at zero.

Known Issues:

- AddRemoveTagsTasks aren't dependent on each other, so if you (undo/redo x lots) and then come back online, all the tasks try to add / remove all the tags at the same time. To fix this we can either allow the tasks to be merged together into a minimal set or make them block on each other.

- When Offline, you still get errors in the console for GET requests. Need to catch these and display an offline status bar.

- The metadata tasks haven't been updated yet to the new API. Wanted to get it reviewed first!

Test Plan: All the tests still pass!

Reviewers: evan

Reviewed By: evan

Differential Revision: https://phab.nylas.com/D1694
2015-07-07 13:38:53 -04:00

71 lines
2.5 KiB
CoffeeScript

NylasAPI = require '../../src/flux/nylas-api'
Actions = require '../../src/flux/actions'
{APIError} = require '../../src/flux/errors'
MarkMessageReadTask = require '../../src/flux/tasks/mark-message-read'
DatabaseStore = require '../../src/flux/stores/database-store'
Message = require '../../src/flux/models/message'
_ = require 'underscore'
describe "MarkMessageReadTask", ->
beforeEach ->
@message = new Message
id: '1233123AEDF1'
namespaceId: 'A12ADE'
subject: 'New Message'
unread: true
to:
name: 'Dummy'
email: 'dummy@nylas.com'
@task = new MarkMessageReadTask(@message)
describe "performLocal", ->
it "should mark the message as read", ->
@task.performLocal()
expect(@message.unread).toBe(false)
it "should trigger an action to persist the change", ->
spyOn(DatabaseStore, 'persistModel').andCallFake -> Promise.resolve()
@task.performLocal()
expect(DatabaseStore.persistModel).toHaveBeenCalled()
describe "performRemote", ->
it "should make the PUT request to the message endpoint", ->
spyOn(NylasAPI, 'makeRequest').andCallFake => new Promise (resolve,reject) ->
@task.performRemote()
options = NylasAPI.makeRequest.mostRecentCall.args[0]
expect(options.path).toBe("/n/#{@message.namespaceId}/messages/#{@message.id}")
expect(options.method).toBe('PUT')
expect(options.body.unread).toBe(false)
describe "when the remote API request fails", ->
beforeEach ->
spyOn(DatabaseStore, 'persistModel').andCallFake -> Promise.resolve()
spyOn(NylasAPI, 'makeRequest').andCallFake -> Promise.reject(new APIError(body: '', statusCode: 400))
it "should not mark the message as unread if it was not unread initially", ->
message = new Message
id: '1233123AEDF1'
namespaceId: 'A12ADE'
subject: 'New Message'
unread: false
to:
name: 'Dummy'
email: 'dummy@nylas.com'
@task = new MarkMessageReadTask(message)
@task.performLocal()
@task.performRemote()
advanceClock()
expect(message.unread).toBe(false)
it "should mark the message as unread", ->
@task.performLocal()
@task.performRemote()
advanceClock()
expect(@message.unread).toBe(true)
it "should trigger an action to persist the change", ->
@task.performLocal()
@task.performRemote()
advanceClock()
expect(DatabaseStore.persistModel).toHaveBeenCalled()