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24 lines
1.1 KiB
24 lines
1.1 KiB
7 years ago
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const assert = require('assert')
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const txStateHistoryHelper = require('../../app/scripts/lib/tx-state-history-helper')
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const testVault = require('../data/v17-long-history.json')
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describe('history-differ', function () {
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it('migrates history to diffs and can recover original values', function () {
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testVault.data.TransactionController.transactions.forEach((tx, index) => {
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const newHistory = txStateHistoryHelper.migrateFromSnapshotsToDiffs(tx.history)
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newHistory.forEach((newEntry, index) => {
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if (index === 0) {
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assert.equal(Array.isArray(newEntry), false, 'initial history item IS NOT a json patch obj')
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} else {
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assert.equal(Array.isArray(newEntry), true, 'non-initial history entry IS a json patch obj')
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}
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const oldEntry = tx.history[index]
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const historySubset = newHistory.slice(0, index + 1)
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const reconstructedValue = txStateHistoryHelper.replayHistory(historySubset)
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assert.deepEqual(oldEntry, reconstructedValue, 'was able to reconstruct old entry from diffs')
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})
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})
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})
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})
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