metamask-extension/app/scripts/migrations/045.test.js

import assert from 'assert';
import migration45 from './045';

describe('migration #45', function () {
  it('should update the version metadata', function (done) {
    const oldStorage = {
      meta: {
        version: 44,
      },
      data: {},
    };

    migration45
      .migrate(oldStorage)
      .then((newStorage) => {
        assert.deepEqual(newStorage.meta, {
          version: 45,
        });
        done();
      })
      .catch(done);
  });

  it('should update ipfsGateway value if outdated', function (done) {
    const oldStorage = {
      meta: {},
      data: {
        PreferencesController: {
          ipfsGateway: 'ipfs.dweb.link',
          bar: 'baz',
        },
        foo: 'bar',
      },
    };

    migration45
      .migrate(oldStorage)
      .then((newStorage) => {
        assert.deepEqual(newStorage.data, {
          PreferencesController: {
            ipfsGateway: 'dweb.link',
            bar: 'baz',
          },
          foo: 'bar',
        });
        done();
      })
      .catch(done);
  });

  it('should not update ipfsGateway value if custom set', function (done) {
    const oldStorage = {
      meta: {},
      data: {
        PreferencesController: {
          ipfsGateway: 'blah',
          bar: 'baz',
        },
        foo: 'bar',
      },
    };

    migration45
      .migrate(oldStorage)
      .then((newStorage) => {
        assert.deepEqual(newStorage.data, {
          PreferencesController: {
            ipfsGateway: 'blah',
            bar: 'baz',
          },
          foo: 'bar',
        });
        done();
      })
      .catch(done);
  });

  it('should do nothing if no PreferencesController key', function (done) {
    const oldStorage = {
      meta: {},
      data: {
        foo: 'bar',
      },
    };

    migration45
      .migrate(oldStorage)
      .then((newStorage) => {
        assert.deepEqual(newStorage.data, {
          foo: 'bar',
        });
        done();
      })
      .catch(done);
  });
});