A Metamask fork with Infura removed and default networks editable
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ciphermask/test/unit/migrations/migrator-test.js

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import fs from 'fs'
import assert from 'assert'
import { cloneDeep } from 'lodash'
import Migrator from '../../../app/scripts/lib/migrator'
import liveMigrations from '../../../app/scripts/migrations'
import data from '../../../app/scripts/first-time-state'
const stubMigrations = [
{
version: 1,
migrate: (state) => {
// clone the data just like we do in migrations
const clonedData = cloneDeep(state)
clonedData.meta.version = 1
return Promise.resolve(clonedData)
},
},
{
version: 2,
migrate: (state) => {
const clonedData = cloneDeep(state)
clonedData.meta.version = 2
return Promise.resolve(clonedData)
},
},
{
version: 3,
migrate: (state) => {
const clonedData = cloneDeep(state)
clonedData.meta.version = 3
return Promise.resolve(clonedData)
},
},
]
const versionedData = { meta: { version: 0 }, data: { hello: 'world' } }
const firstTimeState = {
meta: { version: 0 },
data,
}
describe('migrations', function () {
describe('liveMigrations require list', function () {
let migrationNumbers
before(function () {
const fileNames = fs.readdirSync('./app/scripts/migrations/')
migrationNumbers = fileNames
.reduce((acc, filename) => {
const name = filename.split('.')[0]
if ((/^\d+$/u).test(name)) {
acc.push(name)
}
return acc
}, [])
.map((num) => parseInt(num, 10))
})
it('should include all migrations', function () {
migrationNumbers.forEach((num) => {
const migration = liveMigrations.find((m) => m.version === num)
assert(migration, `migration not included in 'migrations/index.js': ${num}`)
})
})
it('should have tests for all migrations', function () {
const fileNames = fs.readdirSync('./test/unit/migrations/')
const testNumbers = fileNames
.reduce((acc, filename) => {
const name = filename.split('-test.')[0]
if ((/^\d+$/u).test(name)) {
acc.push(name)
}
return acc
}, [])
.map((num) => parseInt(num, 10))
migrationNumbers.forEach((num) => {
if (num >= 33) {
assert.ok(testNumbers.includes(num), `no test found for migration: ${num}`)
}
})
})
})
describe('Migrator', function () {
it('migratedData version should be version 3', async function () {
const migrator = new Migrator({ migrations: stubMigrations })
const migratedData = await migrator.migrateData(versionedData)
assert.equal(migratedData.meta.version, stubMigrations[2].version)
})
it('should match the last version in live migrations', async function () {
const migrator = new Migrator({ migrations: liveMigrations })
const migratedData = await migrator.migrateData(firstTimeState)
const last = liveMigrations.length - 1
assert.equal(migratedData.meta.version, liveMigrations[last].version)
})
it('should emit an error', async function () {
const migrator = new Migrator({
migrations: [{
version: 1,
async migrate () {
throw new Error('test')
},
}],
})
await assert.rejects(migrator.migrateData({ meta: { version: 0 } }))
})
})
})