Bump phpunit

composer.json

@@ -16,10 +16,9 @@
         "illuminate/database": "^5.1",
         "illuminate/events": "^5.1",
         "mongodb/mongodb": "^1.0.0"
-
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.0|^5.0",
+        "phpunit/phpunit": "^5.0|^6.0",
         "orchestra/testbench": "^3.1",
         "mockery/mockery": "^0.9",
         "satooshi/php-coveralls": "^1.0"

tests/ModelTest.php

@@ -218,7 +218,7 @@ class ModelTest extends TestCase
 
     public function testFindOrfail()
     {
-        $this->setExpectedException('Illuminate\Database\Eloquent\ModelNotFoundException');
+        $this->expectException('Illuminate\Database\Eloquent\ModelNotFoundException');
         User::findOrfail('51c33d8981fec6813e00000a');
     }