From 83113f600480689d6de3d0842905bc888e36aa4a Mon Sep 17 00:00:00 2001
From: Oliver Vogel <oliver@olivervogel.com>
Date: Sun, 14 Jan 2024 10:53:19 +0100
Subject: [PATCH] Improve TextBlock code & test

---
 src/Typography/TextBlock.php       | 6 ++++++
 tests/Typography/TextBlockTest.php | 1 +
 2 files changed, 7 insertions(+)

diff --git a/src/Typography/TextBlock.php b/src/Typography/TextBlock.php
index f83a7dc4..2eea0f13 100644
--- a/src/Typography/TextBlock.php
+++ b/src/Typography/TextBlock.php
@@ -23,6 +23,12 @@ class TextBlock extends Collection
         return $this->items;
     }
 
+    /**
+     * Get line by given key
+     *
+     * @param mixed $key
+     * @return null|Line
+     */
     public function line($key): ?Line
     {
         if (!array_key_exists($key, $this->lines())) {
diff --git a/tests/Typography/TextBlockTest.php b/tests/Typography/TextBlockTest.php
index 60f7cf35..4f8cad43 100644
--- a/tests/Typography/TextBlockTest.php
+++ b/tests/Typography/TextBlockTest.php
@@ -35,6 +35,7 @@ class TextBlockTest extends TestCase
         $this->assertEquals('foo', $block->line(0));
         $this->assertEquals('FooBar', $block->line(1));
         $this->assertEquals('bar', $block->line(2));
+        $this->assertNull($block->line(20));
     }
 
     public function testLongestLine(): void