Avoid executing external plugins' test cases

composer.json

    "require": {
        "php": ">=5.6.4",
        "laravel/framework": "5.4.*",
        "laravel/socialite": "^3.0",
        ...
        "chencha/share": "^5.2"
    },
    "require-dev": {
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "0.9.*",
        "phpunit/phpunit": "~5.7"
    },
    ...
    "autoload-dev": {
        "psr-4": {
            "Tests\\": "tests/"
        }
    },

When I run phpunit it gives me following error

PHP Fatal error: Class 'Orchestra\Testbench\TestCase' not found in /usr/lib/php5/voice/v1.5/vendor/chencha/share/tests/TestCase.php on line 3

I can add "orchestra/testbench": "~3.0" under my require-dev which will solve the issue, But is there way I can run only my test cases without the plugins' test cases?

via Saumini