There are unit tests in tests and eslint. They're run each time you push on CircleCI.

Execute them.

$ yarn run test
$ yarn run lin

There are 2 types of test in Boostnote, one is unit tests for dataApi, another one is unit tests for other modules in browser/lib/.

Actually, it was. Spectron was used for our e2e test tool. The reason why it was removed is that because it has problems below:

1. Spectron doesn't support button click in a dialog box so the files for tests remain even after the tests finish
2. It's hard to specify input field due to CodeMirror complication
3. It doesn't run well on CI due to permission