Add test for inheritance with depends

tests/Features/DependsInheritance.php

@@ -0,0 +1,22 @@
+<?php
+
+use PHPUnit\Framework\TestCase;
+
+class InheritanceTest extends TestCase
+{
+    public function foo()
+    {
+        return 'bar';
+    }
+}
+
+uses(InheritanceTest::class);
+
+it('is a test', function () {
+    expect(true)->toBeTrue();
+});
+
+it('uses correct parent class', function () {
+    expect(get_parent_class($this))->toEqual(InheritanceTest::class);
+    expect($this->foo())->toEqual('bar');
+})->depends('it is a test');