We chunk history entries by their YYYY-MM-DD date representation to
display them day-by-day.
However trying to convert a YYYY-MM-DD string into a timestamp is
unpredictable, and was causing our dates to be one day out (probably
because of midnight/daylight savings/general datetime horrors).
This commit changes the code to do the same thing as the history page,
which is look at the `updated_at` field on the first entry to get a
datetime object and from that the formatted date we show in the headings
on the page.
Makes these assumptions:
- we don’t care about history before 29th November 2019 at 11am (this
is when priority started to mean a proportion rather than a ranking)
- the priority of the second provider will always be the inverse of
the first provider
Which means the code is a lot simpler/actually does what you’d expect.
We mostly rely on the API returning a 404 to generate 404s for trying
to get things with non-UUID IDs. This is fine, except our tests often
mock these API calls. So it could look like everything is working fine,
except the thing your passing in might never be a valid UUID, and thus
would 404 in a non-test environment.
So this commit:
1. uses the `uuid` URL converter everywhere there’s something that looks
like an ID in a URL parameter
2. adds a test which automates checking for 1.
- API will now send through `created_by_name` instead of `created_by`.
- API will always send through `current_month_billable_sms` but this can
now be `0` instead of `None`.
We have a bunch of different styles of handling when function
definitions span multiple lines, which they almost always do with tests.
Here’s why an argument per line, single indent is best:
- cleaner diffs when you change the name of a method (one line change
instead of multiple lines)
- works better on narrow screens, eg Github’s diff view, or with two
terminals side by side on a laptop screen
- works with any editor’s indenting shortcuts, no need for an IDE
Also, trailing comma in the list of arguments is good because adding a
new argument to a method becomes a one line, not two line diff.
