Test File Cleanup

- Added coverage annotations
- Fixed one test that didn't extend library's base test case
- Removed tear downs that are duplicated by test case default
- Added Mockery::close into test case default tear down

tests/src/Generator/OpenSslGeneratorTest.php

@@ -4,8 +4,12 @@ namespace Ramsey\Uuid\Test\Generator;
 
 use Ramsey\Uuid\Generator\OpenSslGenerator;
 use Ramsey\Uuid\Test\TestCase;
-use AspectMock\Test as AspectMock;
 
+/**
+ * Class OpenSslGeneratorTest
+ * @package Ramsey\Uuid\Test\Generator
+ * @covers Ramsey\Uuid\Generator\OpenSslGenerator
+ */
 class OpenSslGeneratorTest extends TestCase
 {
     public function setUp()
@@ -14,12 +18,6 @@ class OpenSslGeneratorTest extends TestCase
         parent::setUp();
     }
 
-    public function tearDown()
-    {
-        parent::tearDown();
-        AspectMock::clean();
-    }
-
     public function lengthAndHexDataProvider()
     {
         return [