Add helper method for HeaderBlock

Author: loevgaard

src/Block/HeaderBlock.php

@@ -16,4 +16,12 @@ public function __construct(
     ) {
         parent::__construct($id);
     }
+
+    /**
+     * This is a helper method to get the HTML tag for the header
+     */
+    public function getTag(): string
+    {
+        return sprintf('h%d', $this->level);
+    }
 }

tests/Block/HeaderBlockTest.php

@@ -6,8 +6,16 @@
 
 final class HeaderBlockTest extends BlockTestCase
 {
-    protected function getBlock(): Block
+    protected function getBlock(): HeaderBlock
     {
         return new HeaderBlock('id', 'Header', 1);
     }
+
+    /**
+     * @test
+     */
+    public function it_returns_tag(): void
+    {
+        self::assertSame('h1', $this->getBlock()->getTag());
+    }
 }