Hacktoberfest Code Coverage Increase :)

[Hreherch]

Hopefully this is appropriate, my first time doing an open source contribution. Please let me know if there are any other steps I need to take! :)

In test/react.test.js one of the tests was missing the FeatureFalse component of the test, this is now added in to test for that case.

In test/main.test.js

• String tests modified to use expects(var).to.equal('a string') instead of expect(var === 'a string').to.be(true)
  • This can reduce noise/number of lines and make it a bit more clear
  • The testing error will also now say what string value was expected/received instead of saying expected true to be false
• Added a test for the client user having keys with underscores
  • To be completely honest, I'm not sure what the use case is for this..
• Modified the mockClient to allow passing arguments to be emitted
  • For some reason, the test "handleEvents error event" will pass regardless if you say expect(error).to.throw or expect(error).to.not.throw.
  • As well, error is undefined in the test.
  • By being able to pass an error, we can test if that error is pushed through instead.