You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
46 lines
1.9 KiB
46 lines
1.9 KiB
const assert = require('assert')
|
|
const txStateHistoryHelper = require('../../app/scripts/controllers/transactions/lib/tx-state-history-helper')
|
|
const testVault = require('../data/v17-long-history.json')
|
|
|
|
|
|
describe('tx-state-history-helper', function () {
|
|
it('migrates history to diffs and can recover original values', function () {
|
|
testVault.data.TransactionController.transactions.forEach((tx, index) => {
|
|
const newHistory = txStateHistoryHelper.migrateFromSnapshotsToDiffs(tx.history)
|
|
newHistory.forEach((newEntry, index) => {
|
|
if (index === 0) {
|
|
assert.equal(Array.isArray(newEntry), false, 'initial history item IS NOT a json patch obj')
|
|
} else {
|
|
assert.equal(Array.isArray(newEntry), true, 'non-initial history entry IS a json patch obj')
|
|
}
|
|
const oldEntry = tx.history[index]
|
|
const historySubset = newHistory.slice(0, index + 1)
|
|
const reconstructedValue = txStateHistoryHelper.replayHistory(historySubset)
|
|
assert.deepEqual(oldEntry, reconstructedValue, 'was able to reconstruct old entry from diffs')
|
|
})
|
|
})
|
|
})
|
|
|
|
it('replaying history does not mutate the original obj', function () {
|
|
const initialState = { test: true, message: 'hello', value: 1 }
|
|
const diff1 = [{
|
|
"op": "replace",
|
|
"path": "/message",
|
|
"value": "haay",
|
|
}]
|
|
const diff2 = [{
|
|
"op": "replace",
|
|
"path": "/value",
|
|
"value": 2,
|
|
}]
|
|
const history = [initialState, diff1, diff2]
|
|
|
|
const beforeStateSnapshot = JSON.stringify(initialState)
|
|
const latestState = txStateHistoryHelper.replayHistory(history)
|
|
const afterStateSnapshot = JSON.stringify(initialState)
|
|
|
|
assert.notEqual(initialState, latestState, 'initial state is not the same obj as the latest state')
|
|
assert.equal(beforeStateSnapshot, afterStateSnapshot, 'initial state is not modified during run')
|
|
})
|
|
|
|
})
|
|
|