This package allows you to execute tests and output the results to the terminal.
To define the actual tests, you'll need to use the gren-lang/test package.
A minimal test program will have the following in a Main.gren file:
module Main exposing (main)
import Expect
import Test exposing (describe, test)
import Test.Runner.Node exposing (Program, run)
main : Program
main =
run <|
describe "All tests"
[ test "Failing test" <| \_ ->
Expect.equal True False
]