fix: Assert that the comparison process depending of external node ap…

[ijpatricio]

…plications executes OK.

Tests:

laravel-visual-diff/src/VisualDiff.php

Lines 133 to 139 in fbf586f

	$process = newProcess($fullCommand);
	$process->run();
	if ($process->isSuccessful()) {
	returnrtrim($process->getOutput());
	}

I'm not sure I can add tests, as I cannot replace Process here, it's being instatiated with new keyword,
I would go ahead and resolve it with container, but let's see what you have to say?

This would be equivalent

$process = app()->make(Process::class, ['commandline' => $fullCommand]);

and then we could swap out in the test.

So, in manual testing...

When running php artisan dusk, and not pngjs installed

output is

PHPUnit 7.3.2 by Sebastian Bergmann and contributors.
E 1 / 1 (100%)
Time: 2.59 seconds, Memory: 14.00MB
There was 1 error:
1) Tests\Browser\ExampleTest::testBasicExample
RuntimeException: Could not run the Node process. Probably a missing NPM dependency.
module.js:557
throw err;
^
Error: Cannot find module 'pngjs'
at Function.Module._resolveFilename (module.js:555:15)
at Function.Module._load (module.js:482:25)
at Module.require (module.js:604:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (/Users/joaopatricio/code/packages/beyondcode/laravel-visual-diff/bin/diff.js:1:73)
at Module._compile (module.js:660:30)
at Object.Module._extensions..js (module.js:671:10)
at Module.load (module.js:573:32)
at tryModuleLoad (module.js:513:12)
at Function.Module._load (module.js:505:3)
/Users/joaopatricio/code/packages/beyondcode/laravel-visual-diff/src/VisualDiff.php:144
/Users/joaopatricio/code/packages/beyondcode/laravel-visual-diff/src/VisualDiff.php:112
/Users/joaopatricio/code/packages/beyondcode/laravel-visual-diff/src/VisualDiffTester.php:150
/Users/joaopatricio/code/packages/beyondcode/laravel-visual-diff/src/VisualDiffTester.php:59

Then, next, without pixelmatch installed

PHPUnit 7.3.2 by Sebastian Bergmann and contributors.
E 1 / 1 (100%)
Time: 2.42 seconds, Memory: 14.00MB
There was 1 error:
1) Tests\Browser\ExampleTest::testBasicExample
RuntimeException: Could not run the Node process. Probably a missing NPM dependency.
module.js:557
throw err;
^
Error: Cannot find module 'pixelmatch'
at Function.Module._resolveFilename (module.js:555:15)
at Function.Module._load (module.js:482:25)
at Module.require (module.js:604:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (/Users/joaopatricio/code/packages/beyondcode/laravel-visual-diff/bin/diff.js:3:13)
at Module._compile (module.js:660:30)
at Object.Module._extensions..js (module.js:671:10)
at Module.load (module.js:573:32)
at tryModuleLoad (module.js:513:12)
at Function.Module._load (module.js:505:3)
/Users/joaopatricio/code/packages/beyondcode/laravel-visual-diff/src/VisualDiff.php:144
/Users/joaopatricio/code/packages/beyondcode/laravel-visual-diff/src/VisualDiff.php:112
/Users/joaopatricio/code/packages/beyondcode/laravel-visual-diff/src/VisualDiffTester.php:150

Then, when both are installed...

PHPUnit 7.3.2 by Sebastian Bergmann and contributors.
. 1 / 1 (100%)
Time: 1.9 seconds, Memory: 14.00MB
OK (1 test, 1 assertion)

So, what do you think?