Improve tests

[villander]

We have almost 80% coverage, which is very good. But the place we least test is where you most need, in apollo service, the heart of the addon. We need help with this.

[bgentry]

@villander any interest in a PR to get code coverage included as part of our CodeClimate runs?

https://codeclimate.com/github/bgentry/ember-apollo-client

[josemarluedke]

@villander I'm curious about the status of this now. Any change you can rerun the coverage report?

[josemarluedke]

While a good unit test coverage is good, I think we need to improve our tests by adding more application/rendering tests. We need to make sure we interact well with ember, we should create more tests cases to mimic how users use this project. Today we mock a lot of methods to do testing, we should minimize that.