Testing interactive artisan commands using Mockey - laravel

Question

I am writing unit tests for interactive commands in Laravel 5.3 following this guide but I can't seem to get Mockery to work.
I've set up a simple command, greet:user.
public function handle()
{
if(!$name = $this->argument('name')) {
$name = $this->ask('Name of user to greet');
}
$this->info("Hello {$name}.");
}
And am writing unit-tests like;
public function testCanGreetGivenUser()
{
$command = Mockery::mock('App\Console\Commands\GreetUser[info]');
$command->shouldReceive('info')->once()->with('Hello Brian.');
$exit_code = Artisan::call('greet:user', ['name' => 'Brian', '--no-interaction' => true]);
$this->assertEquals(trim(Artisan::output()), 'Hello Brian.');
$this->assertEquals($exit_code, 0);
}
Issue:
Mockery\Exception\InvalidCountException: Method info("Hello Brian.") from Mockery_0_App_Console_Commands_GreetUser should be called
exactly 1 times but called 0 times.
My goal is to test;
If no input expected
$this->artisan('greet:user', ['name' => 'Brian'])
->expectsOutput('Hello Brian.')
->assertExitCode(0);
If input is required.
$this->artisan('greet:user')
->expectsQuestion('Name of user to greet', 'James')
->expectsOutput('Hello James.')
->assertExitCode(0);
That's how I could do it in Laravel 5.7, but how can I achieve the same for Laravel 5.3

Answer 1

To solve the problem you'll have to call the test as follows:
public function testCanGreetGivenUser()
{
$command = Mockery::mock('\App\Console\Commands\GreetUser[info]');
$command->shouldReceive('info')->once()->with('Hello Brian.');
$this->app[\Illuminate\Contracts\Console\Kernel::class]->registerCommand($command);
$exit_code = $this->artisan('greet:user', ['name' => 'Brian', '--no-interaction' => true]);
$this->assertEquals($exit_code, 0);
}
The deciding factor is the command registration. You must do it to actually replace the existing instance of the command with your mock.