Update test names

Fixes #19

tests/Unit/Service/BuilderTest.php

@@ -8,7 +8,8 @@ use PHPUnit\Framework\TestCase;
 
 class BuilderTest extends TestCase
 {
-    public function testBuild()
+    /** @test */
+    public function it_can_build_filters()
     {
         $filterA = (new Filter())
             ->from(['foo@example.com', 'test@example.com'])

tests/Unit/Service/PartialsTest.php

@@ -8,10 +8,8 @@ use PHPUnit\Framework\TestCase;
 
 class PartialsTest extends TestCase
 {
-    /**
-     * Test loading partials from multiple partial files.
-     */
-    public function testLoadingFiltersFromPartials()
+    /** @test */
+    public function filters_can_be_loaded_from_partials()
     {
         /** @var Filter[] $filters */
         $filters = FakePartials::load('filters');