* FIX: 'false' value was treated as a truthy value
For example, latest.json?no_subcategories=false used to have set
no_subcategories to the string value of 'false', which is not false.
* DEV: Remove dead code
* FIX: Redirect to /none under the right conditions
These conditions are:
- neither /all or /none present
- only for default filter
* FIX: Build correct topic list filter
/none was never added to the topic list filter
* FIX: Do not show count for subcategories if 'none' category
* FIX: preload_key must contain /none if no_subcategories
* Introduced fab!, a helper that creates database state for a group
It's almost identical to let_it_be, except:
1. It creates a new object for each test by default,
2. You can disable it using PREFABRICATION=0
This change both speeds up specs (less strings to allocate) and helps catch
cases where methods in Discourse are mutating inputs.
Overall we will be migrating everything to use #frozen_string_literal: true
it will take a while, but this is the first and safest move in this direction
