WIP: Add hasProperty() assertion

[seansellek]

This takes the first steps towards addressing #38 by adding a base .hasProperty() assertion as mentioned by @Turbo87.

The assertion supports providing a custom message to facilitate building shortcuts such as .isChecked().

Resolves #55

[seansellek]

There seems to be a permissions issue surrounding Chrome in CI 😥

You need to make sure that /opt/google/chrome/chrome-sandbox is owned by root and has mode 4755

Update: It's a known issue with Travis CI travis-ci/travis-ci#8836

A couple workarounds:

1. Use sudo

# travis.yml
sudo: required
addons:
 chrome: stable

2. use Firefox:

# travis.yml
addons:
    firefox: 57.0

thoughts?

[Turbo87]

@seansellek I'm currently on vacation, I'll have a look once I'm back (7 days)

[Turbo87]

@seansellek 👋 we've just merged #48, which should fix the Chrome issue. Can you rebase this PR?

[Turbo87]

This stuff should be move to your global .gitignore file (see https://help.github.com/articles/ignoring-files/)

Only project specific files should be added to this file, but no individual editor config files etc.

[seansellek]

@Turbo87 sorry it took a bit for me to get back to this. Rebased, removed the .gitignore commit, and fixed a bug in the tests, getting coverage up to 100%.

[Turbo87]

I'm wondering if we should mimic the hasAttribute API instead which accepts name, value?, message? 🤔

[scalvert]

+1 to this. There's a lot to be said for the API being consistent for like methods/functions.

[Turbo87]

as mentioned before, I think this should mimic the API that we have for hasAttribute()

[scalvert]

Thanks for pinging on this, @Turbo87. I've been pushing on it over the last little while, but haven't had as much time to get it through.

I've aligned it more to the hasAttribute signature, and am just working through the tests. I'll try to get this finished up over the next little while.

[Turbo87]

sweet, thanks for working on it :)

[Turbo87]

closing due to inactivity