adglent is a Gleam library which can be used to setup testing code and a template for implementing solution to Advent of code problems.
erlangtarget (default) for Gleam.
Start a new gleam project for your AOC soluctions with
gleam new. In the project folder run:
gleam add --dev adglent
First log in to Advent of code and copy your personal
session-cookie. The value can be found using developer tools in the browser (in Chrome: “Application->Cookies->https://adventofcode.com->session” and copy the Cookie-value)
gleam run -m adglent/init
Input the AOC year, you personal AOC session cookie and select if
showtime should be used for tests (otherwise it will assume the project uses
gleeunit as is default for
gleam new <project>)
showtimeis an alternate gleam test-runner. It is still quite new and havn’t been tested in as many project as
gleeunit. It has a different way of formatting the test-results and also supports the possibility to run specific test-modules (which can be useful in AOC).
showtimeis a standalone project but have been embedded into
To start working on the solution for a specific day run:
gleam run -m adglent/day <NUM>
<NUM> is the day number of the day you want to solve a problem for.
Example (start solving 1st of December):
gleam run -m adglent/day 1
Adding a day will add tests in
src/day<NUM>/solve.gleam file where the solution can be implemented.
Furthermore it will also download the input for the problem to
Before running the tests you need to provide one or more example. These can be found in the problem description for that day at the AOC website.
Add an example to a part of the problem by adding examples to the
Example (input “Hello Joe!” should give answer 613411):
const part1_examples: List(Example(Problem1AnswerType)) = [ Example("Hello Joe!", "613411"), ]
The type of the answer for a part can be adjusted if needed by changing the type aliases
Problem2AnswerType. Note that this will change the type that the
part2 functions in
solve.gleam expect to return.
To test all days in the project use:
If you are using
showtime you can test a single day by running:
gleam test -- --modules=day<NUM>/day<NUM>_test
Example (test solution for 1st of December):
gleam test -- modules=day1/day1_test
Get the answer
To get the (hopefully correct) answer after the tests are ok run:
gleam run -m day<NUM>/solve <PART>
<NUM> is the day to solve and
<PART> is the part of the problem (1 or 2) to solve.
This will run the solver and print the answer to stdout.
Module documentation can be found at https://hexdocs.pm/adglent.