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metamask-extension/test/unit/actions/tx_test.js
Mark Stacey 46d72d17a9
Correctly detect changes to background state (#8435)
Changes to the background state were being detected in the `update`
event handler in `ui/index.js` that receives state updates from the
background. However this doesn't catch every update; some state
changes are received by the UI in-between these `update` events.

The background `getState` function is callable directly from the UI,
and many action creators call it via `forceUpdateMetamaskState` to
update the `metamask` state immediately without waiting for the next
`update` event. These state updates skip this change detection in
`ui/index.js`.

For example, if a 3Box state restoration resulted in a `currentLocale`
change, and then a `forceUpdateMetamaskState` call completed before the
next `update `event was received, then `updateCurrentLocale` wouldn't
be called, and the `locale` store would not be updated correctly with
the localized messages for the new locale.

We now check for background state changes in the `updateMetamaskState`
action creator. All `metamask` state updates go through this function,
so we aren't missing any changes anymore.
2020-04-28 10:40:28 -03:00

50 lines
1.3 KiB
JavaScript

import assert from 'assert'
import configureMockStore from 'redux-mock-store'
import thunk from 'redux-thunk'
import * as actions from '../../../ui/app/store/actions'
import actionConstants from '../../../ui/app/store/actionConstants'
const middlewares = [thunk]
const mockStore = configureMockStore(middlewares)
describe('tx confirmation screen', function () {
const txId = 1457634084250832
const initialState = {
appState: {
},
metamask: {
unapprovedTxs: {
[txId]: {
id: txId,
status: 'unconfirmed',
time: 1457634084250,
},
},
},
}
const store = mockStore(initialState)
describe('cancelTx', function () {
it('creates COMPLETED_TX with the cancelled transaction ID', async function () {
actions._setBackgroundConnection({
approveTransaction (_, cb) {
cb('An error!')
},
cancelTransaction (_, cb) {
cb()
},
getState (cb) {
cb(null, {})
},
})
await store.dispatch(actions.cancelTx({ id: txId }))
const storeActions = store.getActions()
const completedTxAction = storeActions.find(({ type }) => type === actionConstants.COMPLETED_TX)
const { id } = completedTxAction.value
assert.equal(id, txId)
})
})
})