Example of failing Elm test with no detail

contextInfo.txt

$ elm --version
0.18.0
$ elm-test --version
0.17.3
$ cat elm-stuff/exact-dependencies.json
{
    "elm-community/lazy-list": "1.0.0",
    "elm-community/elm-test": "3.0.0",
    "elm-community/shrink": "2.0.0",
    "elm-lang/virtual-dom": "2.0.0",
    "mgold/elm-random-pcg": "4.0.2",
    "elm-lang/lazy": "2.0.0",
    "elm-lang/html": "2.0.0",
    "elm-community/json-extra": "2.0.0",
    "rtfeldman/node-test-runner": "3.0.1",
    "elm-lang/core": "5.0.0"
}$

FailingElmTest.elm

port module Main exposing (..)

import Json.Encode
import Test exposing (Test, describe, test)
import Test.Runner.Node
import Expect


main =
    Test.Runner.Node.run emit <|
        describe "failures"
            [ test "should fail" <| \() -> Expect.equal 3 4 ]


port emit : ( String, Json.Encode.Value ) -> Cmd msg

sampleOutput.txt

$ elm-test FailingElmTest.elm
Success! Compiled 1 module.
Successfully generated /var/folders/sn/_31k3vmx3v712cxxvlgs_t_w0000gn/T/elm_test_116104-35620-v8tkls.jmvogsnhfr.js

TEST RUN FAILED

Duration: 10 ms
Passed:   0
Failed:   1

When run with Elm 0.18 beta and elm-test (CLI) 0.17.3 this reports that the test failed but does not given any details.