o3js

Testing Framework = Mocha

Mocha was chosen because I (gsilk) have used it many times in the past and it just works. Specifically, I like that:

• it doesn't couple the assertion library with the test runner (like Tape)
• it doesn't try be parallel (like AVA), which IMHO would be premature optimization -- and besides we're never going to be IO-bound
• it doesn't require a config file (like Karma)

Assertion Library = Chai

Chai was chosen over the NodeJS standard assertion library because:

• it works when running tests in the browser
• it displays the original exception (rather than burying it), which is good because:
  • it saves time when diagnosing failing tests and writing new ones
  • it puts the error messages in front of us more regularly, which keeps their quality higher