The Mix manifest does not exist when using orchestral/testbench

I'm not sure how your mix-manifest.json looks like, but I think the problem is on the way you run mix. Take a look at this bit: https://github.com/laravel/horizon/blob/11acb6eafee4a0ea3bea87c6277f4342ebd2e1e3/webpack.mix.js#L31

I believe this is also an important line: https://github.com/laravel/horizon/blob/11acb6eafee4a0ea3bea87c6277f4342ebd2e1e3/src/HorizonServiceProvider.php#L75

@BOBBYBOUWMANN - The mix-manifest.json file is just a standard one and there's nothing special on this. Here's the example:

{
    "/js/app.js": "/js/app.js",
    "/css/app.css": "/css/app.css"
}

On the other hand, the line .copy('public', '../../horizontest/public/vendor/horizon') from the Horizon is copying the Horizon package public directory to the Laravel installation public/vendor/horizon/ directory which I already did. This is because it takes time to always publish assets from php artisan commands whenever you make change in your resources. So, it's better to copy it in this way.

And the following is for publishing assets php artisan vendor:publish which I did too and it works fine.

public function defineAssetPublishing()
{
    $this->publishes([
        HORIZON_PATH.'/public' => public_path('vendor/horizon'),
    ], 'horizon-assets');
}

The only problem is mix() function. It's weird that even I specified the directory asset(mix('js/app.js', 'vendor/trade')), it's still not looking in my package public/mix-manifest.json. Not sure how to about fixing this. Stuck here for last 2 days :'(

Not sure, but Laravel passes the css file name to the view, but the view is registered as a package view: https://github.com/laravel/horizon/blob/11acb6eafee4a0ea3bea87c6277f4342ebd2e1e3/src/Http/Controllers/HomeController.php

Are you doing that as well?

While I am not passing CSS file name to the view, I have registered my view in service provided using the following:

private function registerResources()
{
    $this->loadViewsFrom(__DIR__ . '/../resources/views', 'trade');
}

And I am calling the view from web.php using the following:

Route::get('/', function() {
    return view('trade::_layouts.app');
});

I just saw that even if you run mix() from the ExampleTest.php and dump() it, it will still throw you the same error.

@BOBBYBOUWMANN - Here's what I found when debugging his.

ErrorException: file_get_contents(/Users/mazik/Documents/Repositories/trade/vendor/orchestra/testbench-core/src/Concerns/../../laravel/public/Users/mazik/Documents/Repositories/trade/tests../public//mix-manifest.json): failed to open stream: No such file or directory

mix() is looking for the mix-manifest.json file in the vendor directory.

@BOBBYBOUWMANN - It looks like the problem is here https://github.com/laravel/framework/blob/5.8/src/Illuminate/Foundation/Mix.php#L42

If I manually edit 42 line in Mix.php to the following, it works.

$manifestPath = public_path($manifestDirectory.'/mix-manifest.json');

to

$manifestPath = '.' . $manifestDirectory.'/mix-manifest.json';

Not sure how to fix this or whether it's a bug.

There are two ways to override the public_path() returned path to ensure the mix() function can find the mix-manifest.json file.

1. One would be to override the public_path() method completely to the custom package. Laravel usage if (!function_exists()) {} before declaring any function which is good as we can define our own public_path() function in our package. However, we'll need to make sure that our override function loads before the Laravel helper method and that's another topic.
2. The easiest way would be to change the path.public from Laravel IoC Container from the particular PHPUnit test where we're having the issue.

public function testBasicTest()
{
    $this->app->instance('path.public', $packagePublicDir);

    $response = $this->get('/');

    $response->assertStatus(200);
}

@mazedul As I understand it's only failing in your phpunit test, or also when you use the package itself?

@BOBBYBOUWMANN - Only for PHPUnit test.

Mmh, I didn't get that :P

Anyway, the best option is then to override the binding in Laravel indeed. This way you have full control of your tests!

Hi @mazedul I'm in the same boat as yours..

Can you please better explain the point 2 in your best answer? $this->app->instance('path.public', $packagePublicDir); how did you configure it? also, where does 'path.public' come from?

I was trying setting the local asset path only for testing purpose inside either phpunit config file or integration test case getEnvironmentSetUp for a general solution.

Thanks

It's been a while but I'll try to assist as much as I could. You'll need to change the Laravel public path from inside a test like the way I did in the testBasicTest() method. This will override the Laravel public path for that specific test only whenever running unit test.

path.public is the key for Laravel IoC Container that we are overriding here. $packagePublicDir is the directory for mix-manifest.json.

@mazedul thank you for your time.

So,

given that my local public directory is /public.

and I have a tests folder in /tests I have an IntegrationTestCase.php inside where I setup the path of my public folder

<?php

namespace ..\Tests;

use Orchestra\Testbench\TestCase as OrchestraTestCase;

use ...ServiceProvider;

abstract class IntegrationTestCase extends OrchestraTestCase
{
    protected $path;

    //..package provider

    protected function setUp(): void
    {
        parent::setUp();

        $this->loadLaravelMigrations();

        $this->path = realpath(__DIR__.'/../public'); // this point to /public
    }
}

then down in my integration tests I use $this->app->instance('path.public', $this->path); inside a test method.. but, this gives again error 500: mix manifest

How did you see the ErrorException to find out where mix is looking for the manifest.json?

As far as I can remember, the error exception was showing in the terminal window or I dd() it into the Laravel core mix() helper function. But, it should show into the PHPUnit test runner output window.

You can also add the $this->withoutExceptionHandling(); to make sure that you're seeing the exact exception instead of Laravel modified exception.

That said what do you see exactly if you just add a basic test like mine in a fresh test file?

public function testBasicTest()
{
    $this->app->instance('path.public', $packagePublicDir);

    $response = $this->get('/');

    $response->assertStatus(200);
}

..Tests\Integration\Http\Controllers\BeveragesControllerTest::test_DisplayListOfBeverages
ErrorException: The Mix manifest does not exist. (View: C:\Users\....\resources\views\layout.blade.php) (View: C:\Users\....\resources\views\layout.blade.php)

But I'm sure I have the mix-manifest inside /public. I try with dump() inside laravel core mix() to see where it points.

Ok.. after dump() I see mix is pointing to C:\Users\...\public\/vendor/package/mix-manifest.json and clearly this is due because of: <link rel="stylesheet" href="{{ asset(mix('css/app.css', 'vendor/package')) }}" />

Nice, you can now simply override the public path using the $this->app->instance('path.public', $packagePublicDir); which will override it from the Laravel IoC container only for unit test.

mmh.. seems a bit tricky, I'm under version control and that seems to be a special case to be managed with a specific branch and a specific commit..

if I use:

<link rel="stylesheet" href="{{ asset(mix('css/app.css')) }}" />

instead of:

<link rel="stylesheet" href="{{ asset(mix('css/app.css', 'vendor/package')) }}" />

everything good.. but in production the assets doesn't load..

how did you override your $packagePublicDir?

You just write $packagePublicDir to wherever the Orchestral Testbench is looking. You can find a detail overview here https://github.com/orchestral/testbench/issues/241

I had the same problem, and found out that starting from laravel 6 we can use a tests helper method to disable Laravel Mix on tests

$this->withoutMix();

Nice 👏

You save my day! @ekhawlah very good

Weird, it works but is not documented. Thanks :)