From 777f8dfddc49a7e848c858ad33cc0e7ef24ed027 Mon Sep 17 00:00:00 2001
From: Christophe Coevoet <stof@notk.org>
Date: Sat, 21 Dec 2024 17:21:56 +0100
Subject: [PATCH] Assert that the fixture CSS file is readable

---
 tests/Css/ProcessorTest.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/Css/ProcessorTest.php b/tests/Css/ProcessorTest.php
index 6d9e1f9..fec088e 100644
--- a/tests/Css/ProcessorTest.php
+++ b/tests/Css/ProcessorTest.php
@@ -94,7 +94,9 @@ public function testCssWithMediaQueries(): void
 
     public function testCssWithBigMediaQueries(): void
     {
-        $rules = $this->processor->getRules(file_get_contents(__DIR__.'/test.css'));
+        $css = file_get_contents(__DIR__.'/test.css');
+        $this->assertIsString($css, 'The fixture CSS file should be readable.');
+        $rules = $this->processor->getRules($css);
 
         $this->assertCount(414, $rules);
     }