add enzyme/axiom interfaces

use axiom/RepositoryInterface in tests and store music
add axiom/Models/ModelInterface to TuneCollection

tests/unit/memory/AbcParserTest.php

@@ -1,9 +1,11 @@
 <?php
 namespace Tests\Unit\Memory;
 
+use XaiCorp\AbcParser\Interfaces\Repository;
 use XaiCorp\AbcParser\Models\Memory\Abc;
 use XaiCorp\AbcParser\Models\Memory\Person;
 use XaiCorp\AbcParser\Parser as AbcParser;
+use Enzyme\Axiom\Repositories\RepositoryInterface;
 
 class AbcParserTest extends \Codeception\TestCase\Test
 {
@@ -12,7 +14,11 @@ class AbcParserTest extends \Codeception\TestCase\Test
     public function setUp()
     {
         parent::setup();
-        $this->facade = new AbcParser(new Abc());
+
+        $repository = \Mockery::mock(RepositoryInterface::class)
+            ->shouldReceive('add')->once()
+            ->getMock();
+        $this->facade = new AbcParser(new Abc($repository));
     }
 
     private function getValidAbc($filename = '/abc/valid_abc_1.abc')