Update phpunit/phpunit requirement from 7.4.* to 7.4.* || 8.3.* (#6)

Update phpunit/phpunit requirement from 7.4.* to 7.4.* || 8.3.*

Author: Kevin Buchholz

composer.json

@@ -26,13 +26,13 @@
     "require": {
         "php": ">=7.1",
         "eloquent/enumeration": "^6.0",
-        "laravel/framework": ">=5.7"
+        "laravel/framework": "5.7.* || 5.8.* || 6.0.*"
     },
     "require-dev": {
         "consistence/coding-standard": "3.7",
-        "orchestra/testbench": "~3.0",
+        "orchestra/testbench": "~3.0 || 4.*",
         "phpmd/phpmd": "^2.6",
-        "phpunit/phpunit": "7.4.*",
+        "phpunit/phpunit": "7.4.* || 8.3.*",
         "slevomat/coding-standard": "4.8.7",
         "squizlabs/php_codesniffer": "^3.4"
     },

tests/unit/IsEnumKeyTest.php

@@ -2,6 +2,8 @@
 
 namespace Sourceboat\Enumeration\Tests;
 
+use Eloquent\Enumeration\Exception\UndefinedMemberException;
+
 class IsEnumKeyTest extends TestCase
 {
     /**
@@ -37,11 +39,11 @@ public function testIsEnumKey(UserRole $role, string $method, bool $result): voi
     /**
      * Test functionality of is<EnumKey> helper.
      *
-     * @expectedException \Eloquent\Enumeration\Exception\UndefinedMemberException
      * @return void
      */
     public function testIsEnumKeyException(): void
     {
+        $this->expectException(UndefinedMemberException::class);
         UserRole::USER()->isStudent();
     }
 }