Testing elm lib with local Native directory - elm

Question

How do we organize our test directory when developing some libraries that uses Native js code?
I tried to work this out, but I'm blocked here, with this error at runtime when running test/test.sh:
Elm.Native.Mylib = {};
^
TypeError: Cannot read property 'Native' of undefined
git repository
My directories are structured this way:
Mylib:
- src :
- Mylib.elm
- Native :
- MyLib.js
- tests :
- Test.elm
- Test.sh
- elm-package.json
the tests/elm-package.json contains :
{
"version": "1.0.0",
"summary": "helpful summary of your project, less than 80 characters",
"repository": "https://github.com/user/project.git",
"license": "BSD3",
"source-directories": [
"."
,"../src"
],
"exposed-modules": [],
"native-modules": true,
"dependencies": {
"elm-community/elm-test": "1.1.0 <= v < 2.0.0",
"elm-lang/core": "4.0.1 <= v < 5.0.0"
},
"elm-version": "0.17.0 <= v < 0.18.0"
}
the tests/Test.elm is :
module Main exposing (..)
import Basics exposing (..)
import ElmTest exposing (..)
import Mylib exposing (..)
tests : Test
tests =
suite "elm-Mylib Library Tests"
[ ]
main =
runSuite tests
The tests/test.sh is
#!/bin/sh
elm-package install -y
elm-make --yes --output test.js Test.elm
node test.js
The src/Mylib.elm is
module Mylib exposing (..)
import Native.Mylib exposing (..)
import Task exposing (Task)
import Time exposing (Time)
print : a -> Task x ()
print value =
Native.Mylib.log (toString value)
getCurrentTime : Task x Time
getCurrentTime =
Native.Mylib.getCurrentTime
The src/Native/Mylib.js is
Elm.Native.Mylib = {};
Elm.Native.Mylib.make = function(localRuntime) {
localRuntime.Native = localRuntime.Native || {};
localRuntime.Native.Mylib = localRuntime.Native.Mylib || {};
if (localRuntime.Native.Mylib.values)
{
return localRuntime.Native.Mylib.values;
}
var Task = Elm.Native.Task.make(localRuntime);
var Utils = Elm.Native.Utils.make(localRuntime);
function log(string)
{
return Task.asyncFunction(function(callback) {
console.log(string);
return callback(Task.succeed(Utils.Tuple0));
});
}
var getCurrentTime = Task.asyncFunction(function(callback) {
return callback(Task.succeed(Date.now()));
});
return localRuntime.Native.Mylib.values = {
log: log,
getCurrentTime: getCurrentTime
};
};

Answer 1

Try this:
var _user$project$Native_MyLib = function() {
return {
exported: function(arg) { return "One" },
exported2: F2(function(arg) { return "Two" }),
exported3: F3(function(arg) { return "Three" }),
}
}();
It works for grater than Elm 0.17.
Buy you should also use full qualified import:
import Natve.MyLib
exported : String -> String
Native.MyLib.exported
exported2 : String -> String -> String
Native.MyLib.exported2
exported3 : String -> String -> String -> String
Native.MyLib.exported3
User and project values are from your/local elm-package.json:
"repository": "https://github.com/user/project.git",