A Metamask fork with Infura removed and default networks editable
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ciphermask/app/scripts/lib/migrator/index.test.js

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/* eslint-disable jest/no-conditional-expect */
import fs from 'fs';
import { cloneDeep } from 'lodash';
import liveMigrations from '../../migrations';
import data from '../../first-time-state';
import Migrator from '.';
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', () => {
describe('liveMigrations require list', () => {
let migrationNumbers;
beforeAll(() => {
const fileNames = fs.readdirSync('./app/scripts/migrations/');
migrationNumbers = fileNames
.reduce((acc, filename) => {
const name = filename.split('.')[0];
if (/^\d+$/u.test(name)) {
acc.push(name);
}
return acc;
}, [])
.map((num) => parseInt(num, 10));
});
it('should include all migrations', () => {
migrationNumbers.forEach((num) => {
const migration = liveMigrations.find((m) => m.version === num);
expect(migration.version).toStrictEqual(num);
});
});
it('should have tests for all migrations', () => {
const fileNames = fs.readdirSync('./app/scripts/migrations/');
const testNumbers = fileNames
.reduce((acc, filename) => {
const name = filename.split('.test.')[0];
// eslint-disable-next-line jest/no-if
if (/^\d+$/u.test(name)) {
acc.push(name);
}
return acc;
}, [])
.map((num) => parseInt(num, 10));
migrationNumbers.forEach((num) => {
if (num >= 33) {
expect(testNumbers).toContain(num);
}
});
});
});
describe('Migrator', () => {
it('migratedData version should be version 3', async () => {
const migrator = new Migrator({ migrations: stubMigrations });
const migratedData = await migrator.migrateData(versionedData);
expect(migratedData.meta.version).toStrictEqual(
stubMigrations[2].version,
);
});
it('should match the last version in live migrations', async () => {
const migrator = new Migrator({ migrations: liveMigrations });
const migratedData = await migrator.migrateData(firstTimeState);
const last = liveMigrations.length - 1;
expect(migratedData.meta.version).toStrictEqual(
liveMigrations[last].version,
);
});
it('should emit an error', async () => {
const migrator = new Migrator({
migrations: [
{
version: 1,
async migrate() {
throw new Error('test');
},
},
],
});
await expect(async () => {
await migrator.migrateData({ meta: { version: 0 } });
}).rejects.toThrow('Error: MetaMask Migration Error #1: test');
});
});
});