Fixes [#1259]
Fixes [#1267]
In [#1156] we added support for looking up local traits with either a
symbol or string. This matches the lookup for factories and for global
traits.
We were calling `to_sym` on the trait arguments passed in when
building an object, assuming that those arguments would always respond
to `to_sym`. This leads to a confusing error message when passing an
object that doesn't respond to that method.
This PR replaces the confusing "NoMethodError: undefined method `to_sym`
for ..." with a more helpful "KeyError: Trait not registered: ...". It
ensures that all trait resolution is done using strings instead of
symbols, all objects should have a `to_s` method.
Co-authored-by: Sean Doyle <sean.p.doyle24@gmail.com>
[#1259]: https://github.com/thoughtbot/factory_bot/issues/1259
[#1267]: https://github.com/thoughtbot/factory_bot/issues/1267
[#1156]: https://github.com/thoughtbot/factory_bot/pull/1156
Both Factory and Trait have similar methods and interact with a
DefinitionProxy. The idea here is to move the interface DefinitionProxy
expects to a separate class and both Factory and Trait can delegate to
an instance of Definition.
This introduces a couple of things: firstly, there's now a MockFactory
that allows for introspection instead of spying all over the place. This
should make tests a lot less brittle. Secondly, a couple of handy
matchers have been made available to perform assertions against the
mock.
